feat(reels): montage Remotion unifié, aperçu en direct, tests et CI

Montage (étape 3) :
- Nouvelle composition ReelVideo : sous-titres animés mot à mot (3 styles :
  Impact, Surligné, Épuré), logo, effet de fin et fondu, en React
- Le service Python prépare l'image (recadrage, HDR, stabilisation, dernière
  image figée) et la piste son finale (/prepare-reel) ; Remotion compose
- Reels d'images sur les mêmes composants, avec le vrai minutage de la voix
- Police Montserrat embarquée (plus de dépendance à Google Fonts)
- REEL_RENDERER=ffmpeg conserve le rendu FFmpeg, plus rapide, en secours
- Script de pré-bundle réparé (échouait en silence : require en ESM)

Interface (étape 4) :
- Aperçu en direct avec @remotion/player, identique au rendu final ; la voix
  testée cale les sous-titres, sinon minutage estimé
- Choix du style de sous-titres sur les 4 pages Reel
- Vraie progression : étape réelle du rendu, échecs visibles 24 h avec leur
  cause ; fin de la barre simulée et du faux « publié avec succès »

Outillage (étape 5) :
- Tests vitest (minutage identique à Python, validation, sécurité) et
  pytest ; CI GitHub Actions (tsc, tests, build, ruff)
- Captures d'écran, out.mp4 et scripts de test retirés de la racine

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018Ze4bs7tpF1KGWUk6ZZSZ4

.env.example

@@ -124,3 +124,13 @@ GEMINI_API_KEY=
 # (tiny, base, small). Choisi à la construction de l'image : changer la valeur
 # demande de reconstruire ffmpeg-api.
 # WHISPER_MODEL=base
+#
+# Moteur de rendu des Reels vidéo :
+# - remotion (défaut) : sous-titres animés, logo et effet de fin identiques à
+#   l'aperçu affiché dans l'application ; ~30 à 60 s pour un Reel de 30 s ;
+# - ffmpeg : plus rapide (~10 s), sous-titres karaoké classiques.
+# REEL_RENDERER=remotion
+#
+# Onglets Chromium utilisés en parallèle par Remotion (défaut : moitié des cœurs).
+# Réduisez-le si le serveur manque de mémoire.
+# RENDER_CONCURRENCY=

.github/workflows/ci.yml

@@ -0,0 +1,41 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  app:
+    name: Application (TypeScript)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+      # Les dépendances natives (canvas, sharp) et le navigateur Remotion ne
+      # servent pas aux vérifications : on saute leurs scripts d'installation.
+      - run: npm ci --ignore-scripts
+      - run: npm run check
+      - run: npm test
+      - run: npm run build
+
+  ffmpeg-service:
+    name: Service vidéo (Python)
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ffmpeg-service
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+          cache: pip
+          cache-dependency-path: ffmpeg-service/requirements*.txt
+      - run: pip install -r requirements-dev.txt
+      - run: ruff check .
+      - run: ruff format --check .
+      - run: pytest -q

DOCKER.md

@@ -182,6 +182,10 @@ La stack se construit depuis les sources : `app` et `ffmpeg-api` ont une section
 - **Voix Gemini** : renseignez `GEMINI_API_KEY` (ou la clé dans l'application).
   Sans clé, la voix Edge gratuite est utilisée et un avertissement apparaît
   dans les logs.
+- **Moteur de rendu** : par défaut, les Reels vidéo sont montés par Remotion
+  (sous-titres animés, identiques à l'aperçu de l'application). En cas de
+  serveur trop lent, `REEL_RENDERER=ffmpeg` revient au rendu FFmpeg, plus
+  rapide. `RENDER_CONCURRENCY` limite le nombre d'onglets Chromium.
 - **Vérifier la version déployée** : au démarrage, les logs de `socialflow-app`
   affichent `[ReelQueue] Worker démarré`, et `socialflow-ffmpeg` répond
   `{"status":"ok","version":2}` sur `/health`.

Dockerfile

@@ -70,7 +70,7 @@ RUN rm -rf client/node_modules \
          /tmp/remotion-*
 
 # Pré-bundler la composition Remotion
-RUN node scripts/prebundle-remotion.js || true
+RUN node scripts/prebundle-remotion.mjs || true
 
 # Télécharger le Chrome headless shell de Remotion (binaire glibc natif sur Debian)
 RUN npx remotion browser ensure && echo "✓ Remotion browser prêt"

client/src/components/ongoing-reels.tsx

@@ -4,16 +4,20 @@ import { Progress } from "@/components/ui/progress";
 import { Clapperboard, Loader2, CheckCircle2, XCircle } from "lucide-react";
 import type { Post } from "@shared/schema";
 
-/** Labels for each progress stage */
-function getStageLabel(progress: number, status?: string): string {
-    if (status === 'pending') return "En attente de traitement...";
-    if (progress <= 5) return "Démarrage du traitement…";
-    if (progress <= 15) return "Traitement vidéo (FFmpeg)…";
-    if (progress <= 65) return "Encodage en cours…";
-    if (progress <= 85) return "Upload vers le cloud…";
-    if (progress <= 90) return "Liaison du média…";
-    if (progress <= 95) return "Publication en cours…";
-    return "Finalisation…";
+type OngoingReel = Post & { generationStep?: string | null };
+
+/** Libellé de l'étape en cours, telle que rapportée par la file de rendu. */
+const STEP_LABELS: Record<string, string> = {
+    prepare: "Préparation…",
+    voice: "Voix et préparation de la vidéo…",
+    render: "Montage : sous-titres, logo, effets…",
+    store: "Enregistrement dans la médiathèque…",
+    publish: "Publication…",
+};
+
+function getStageLabel(post: OngoingReel): string {
+    if (post.generationStatus === "pending") return "En attente : un autre Reel est en cours…";
+    return (post.generationStep && STEP_LABELS[post.generationStep]) || "Démarrage du traitement…";
 }
 
 interface OngoingReelsProps {
@@ -22,12 +26,13 @@ interface OngoingReelsProps {
 }
 
 export default function OngoingReels({ compact = false }: OngoingReelsProps) {
-    const { data: ongoingPosts = [] } = useQuery<Post[]>({
+    const { data: ongoingPosts = [] } = useQuery<OngoingReel[]>({
         queryKey: ["/api/reels/ongoing"],
         // Cette route ne renvoie que les générations en cours : tant qu'elle est
         // vide il n'y a pas de barre de progression à animer. On garde une veille
         // lente, qui suffit à détecter une génération lancée depuis un autre écran.
-        refetchInterval: (query) => ((query.state.data?.length ?? 0) > 0 ? 3000 : 30000),
+        refetchInterval: (query) =>
+            (query.state.data ?? []).some((p) => p.generationStatus !== "failed") ? 3000 : 30000,
     });
 
     // Nothing to show — render nothing (not even a card)
@@ -43,8 +48,12 @@ export default function OngoingReels({ compact = false }: OngoingReelsProps) {
         >
             <CardHeader className={compact ? "pb-2 px-4 pt-4" : ""}>
                 <CardTitle className={`flex items-center gap-2 ${compact ? "text-base" : ""}`}>
+                    {ongoingPosts.some((p) => p.generationStatus !== "failed") ? (
                         <Loader2 className="w-5 h-5 animate-spin text-primary" />
-                    Génération en cours
+                    ) : (
+                        <XCircle className="w-5 h-5 text-destructive" />
+                    )}
+                    Reels en cours
                 </CardTitle>
             </CardHeader>
             <CardContent className={compact ? "px-4 pb-4 pt-0" : ""}>
@@ -73,8 +82,8 @@ export default function OngoingReels({ compact = false }: OngoingReelsProps) {
                                     {isFailed ? (
                                         <div className="flex items-center gap-1.5 mt-2 text-destructive">
                                             <XCircle className="w-4 h-4" />
-                                            <span className="text-xs">
-                                                {post.generationError || "Erreur lors du traitement"}
+                                            <span className="text-xs break-words">
+                                                Échec : {post.generationError || "erreur lors du traitement"}
                                             </span>
                                         </div>
                                     ) : (
@@ -87,7 +96,7 @@ export default function OngoingReels({ compact = false }: OngoingReelsProps) {
                                             </div>
                                             <div className="flex items-center justify-between mt-1.5">
                                                 <span className="text-xs text-muted-foreground">
-                                                    {getStageLabel(progress)}
+                                                    {getStageLabel(post)}
                                                 </span>
                                                 <span className="text-xs font-medium text-primary">
                                                     {progress}%

client/src/components/reels/caption-style-picker.tsx

@@ -0,0 +1,63 @@
+import { CAPTION_STYLE_OPTIONS, type CaptionStyle } from "@shared/captions";
+import { cn } from "@/lib/utils";
+
+/** Aperçu miniature de chaque style de sous-titres. */
+const SAMPLE: Record<CaptionStyle, React.ReactNode> = {
+  bold: (
+    <span className="font-black uppercase tracking-tight" style={{ WebkitTextStroke: "1px #000", paintOrder: "stroke fill" }}>
+      <span className="text-white">Nos </span>
+      <span className="text-yellow-300">promos</span>
+    </span>
+  ),
+  neon: (
+    <span className="font-extrabold">
+      <span className="rounded px-1 bg-black/50 text-white">Nos</span>{" "}
+      <span className="rounded px-1 bg-violet-600 text-white">promos</span>
+    </span>
+  ),
+  minimal: (
+    <span className="font-bold">
+      <span className="text-white">Nos </span>
+      <span className="text-white/45">promos</span>
+    </span>
+  ),
+};
+
+export function CaptionStylePicker({
+  value,
+  onChange,
+  compact = false,
+}: {
+  value: CaptionStyle;
+  onChange: (style: CaptionStyle) => void;
+  compact?: boolean;
+}) {
+  return (
+    <div className="grid grid-cols-3 gap-2" role="radiogroup" aria-label="Style des sous-titres">
+      {CAPTION_STYLE_OPTIONS.map((option) => (
+        <button
+          key={option.id}
+          type="button"
+          role="radio"
+          aria-checked={value === option.id}
+          title={option.description}
+          onClick={() => onChange(option.id)}
+          className={cn(
+            "rounded-lg border p-2 text-left transition-colors",
+            value === option.id ? "border-primary ring-2 ring-primary/30" : "border-border hover:border-primary/50",
+          )}
+        >
+          <div
+            className={cn(
+              "flex items-center justify-center rounded-md bg-gradient-to-br from-slate-700 to-slate-900",
+              compact ? "h-9 text-[11px]" : "h-12 text-sm",
+            )}
+          >
+            {SAMPLE[option.id]}
+          </div>
+          <p className={cn("mt-1 font-medium", compact ? "text-[11px]" : "text-xs")}>{option.label}</p>
+        </button>
+      ))}
+    </div>
+  );
+}

client/src/components/reels/reel-preview.tsx

@@ -0,0 +1,180 @@
+import { useEffect, useMemo, useState } from "react";
+import { Player } from "@remotion/player";
+import { Loader2, Info } from "lucide-react";
+import {
+  REEL_FPS,
+  REEL_HEIGHT,
+  REEL_WIDTH,
+  VOICE_DELAY,
+  cleanCaptionText,
+  computeImagesTiming,
+  computeReelTiming,
+  offsetWords,
+  spreadWords,
+  type CaptionStyle,
+  type TimedWord,
+} from "@shared/captions";
+import { ReelVideo, type ReelVideoProps } from "@/remotion/ReelVideo";
+import { ImageComposition, type ImageCompositionProps } from "@/remotion/ImageComposition";
+import type { VoicePreviewResult } from "./voice-picker";
+
+/** Débit moyen d'une voix de synthèse française (estimation avant génération). */
+const WORDS_PER_SECOND = 2.6;
+
+interface CommonProps {
+  text: string;
+  showCaptions: boolean;
+  captionStyle: CaptionStyle;
+  ttsEnabled: boolean;
+  /** Voix générée pour ce texte et ces réglages, sinon null (minutage estimé). */
+  voice: VoicePreviewResult | null;
+  musicUrl?: string;
+  musicVolume: number;
+  logoUrl?: string | null;
+  storeName?: string;
+  endingEffect: boolean;
+}
+
+type ReelPreviewProps =
+  | (CommonProps & { kind: "video"; videoUrl: string })
+  | (CommonProps & { kind: "images"; images: string[] });
+
+/** Durée d'un média lue dans ses métadonnées (vidéo de la médiathèque). */
+function useVideoDuration(url: string | undefined): number | null {
+  const [duration, setDuration] = useState<number | null>(null);
+  useEffect(() => {
+    setDuration(null);
+    if (!url) return;
+    const video = document.createElement("video");
+    video.preload = "metadata";
+    video.onloadedmetadata = () => setDuration(Number.isFinite(video.duration) ? video.duration : 15);
+    video.onerror = () => setDuration(15);
+    video.src = url;
+    return () => {
+      video.onloadedmetadata = null;
+      video.onerror = null;
+      video.src = "";
+    };
+  }, [url]);
+  return duration;
+}
+
+function estimatedVoiceDuration(text: string): number {
+  const words = cleanCaptionText(text).split(" ").filter(Boolean).length;
+  return words ? words / WORDS_PER_SECOND + 0.4 : 0;
+}
+
+/**
+ * Aperçu du Reel dans le navigateur, avec les mêmes compositions Remotion que
+ * le rendu final : sous-titres, logo, effet de fin et durée identiques.
+ * Sans voix générée, le minutage des mots est estimé.
+ */
+export function ReelPreview(props: ReelPreviewProps) {
+  const videoDuration = useVideoDuration(props.kind === "video" ? props.videoUrl : undefined);
+  const { text, showCaptions, captionStyle, ttsEnabled, voice, musicUrl, musicVolume, endingEffect } = props;
+  const logoUrl = props.logoUrl ?? undefined;
+  const storeName = endingEffect ? props.storeName || undefined : undefined;
+  const cleanText = cleanCaptionText(text);
+  const voiceDuration = ttsEnabled && cleanText ? voice?.duration ?? estimatedVoiceDuration(text) : 0;
+  const estimated = ttsEnabled && Boolean(cleanText) && !voice;
+
+  const composition = useMemo(() => {
+    if (props.kind === "images") {
+      if (props.images.length === 0) return null;
+      const { total, endingSeconds } = computeImagesTiming({
+        imageCount: props.images.length,
+        voiceDuration,
+        hasEnding: Boolean(logoUrl || storeName),
+      });
+      const contentEnd = total - endingSeconds;
+      let words: TimedWord[] = [];
+      if (showCaptions && cleanText) {
+        words = voice ? voice.words : spreadWords(text, 0, voiceDuration || Math.min(contentEnd - 0.5, 8));
+      }
+      const inputProps: ImageCompositionProps = {
+        images: props.images,
+        totalDuration: total,
+        words,
+        captionStyle,
+        audioUrl: voice?.audioUrl,
+        musicUrl,
+        musicVolume,
+        logoUrl,
+        storeName,
+        endingSeconds,
+      };
+      return { component: ImageComposition, inputProps, total };
+    }
+
+    if (videoDuration == null) return null;
+    const timing = computeReelTiming({
+      videoDuration,
+      voiceDuration: voiceDuration || undefined,
+      hasOutro: Boolean(logoUrl),
+      endingEffect,
+    });
+    let words: TimedWord[] = [];
+    if (showCaptions && cleanText) {
+      if (voice) words = offsetWords(voice.words, VOICE_DELAY);
+      else if (ttsEnabled) words = spreadWords(text, VOICE_DELAY, VOICE_DELAY + voiceDuration);
+      else words = spreadWords(text, 0.5, (timing.logoStart ?? timing.total) - 0.5);
+    }
+    const inputProps: ReelVideoProps = {
+      videoUrl: props.videoUrl,
+      videoDuration,
+      totalDuration: timing.total,
+      words,
+      captionStyle,
+      logoUrl,
+      storeName,
+      logoStart: timing.logoStart,
+      fadeStart: timing.fadeStart,
+      voiceUrl: voice?.audioUrl,
+      voiceDelay: VOICE_DELAY,
+      musicUrl,
+      musicVolume,
+    };
+    return { component: ReelVideo, inputProps, total: timing.total };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [
+    props.kind,
+    props.kind === "video" ? props.videoUrl : props.images.join("|"),
+    videoDuration, text, cleanText, showCaptions, captionStyle, ttsEnabled, voice, voiceDuration,
+    musicUrl, musicVolume, logoUrl, storeName, endingEffect,
+  ]);
+
+  if (!composition) {
+    return (
+      <div className="aspect-[9/16] w-full rounded-lg bg-black flex items-center justify-center">
+        <Loader2 className="w-6 h-6 animate-spin text-white/70" />
+      </div>
+    );
+  }
+
+  return (
+    <div className="space-y-2">
+      <div className="overflow-hidden rounded-lg bg-black">
+        <Player
+          // Nouvelle instance quand la durée change : le lecteur repart du début
+          key={`${props.kind}-${composition.total}`}
+          component={composition.component as React.ComponentType<Record<string, unknown>>}
+          inputProps={composition.inputProps as unknown as Record<string, unknown>}
+          durationInFrames={Math.max(1, Math.round(composition.total * REEL_FPS))}
+          fps={REEL_FPS}
+          compositionWidth={REEL_WIDTH}
+          compositionHeight={REEL_HEIGHT}
+          style={{ width: "100%", aspectRatio: "9 / 16" }}
+          controls
+          loop
+          acknowledgeRemotionLicense
+        />
+      </div>
+      <p className="text-xs text-muted-foreground flex items-start gap-1.5">
+        <Info className="w-3.5 h-3.5 mt-0.5 shrink-0" />
+        {estimated
+          ? "Minutage estimé : cliquez sur « Tester la voix » pour caler les sous-titres sur la vraie voix."
+          : `Aperçu fidèle au rendu final · ${composition.total.toFixed(1)} s`}
+      </p>
+    </div>
+  );
+}

client/src/components/reels/voice-picker.tsx

@@ -20,6 +20,7 @@ import {
   type TtsEngine,
   type TtsStyle,
 } from "@shared/voices";
+import type { TimedWord } from "@shared/captions";
 
 export interface VoiceSettings {
   engine: TtsEngine;
@@ -27,12 +28,38 @@ export interface VoiceSettings {
   style: TtsStyle;
 }
 
+/** Voix générée par « Tester la voix », réutilisée par l'aperçu vidéo. */
+export interface VoicePreviewResult {
+  audioUrl: string;
+  duration: number;
+  words: TimedWord[];
+  /** Texte et réglages ayant servi : l'aperçu n'est valable que s'ils n'ont pas changé. */
+  text: string;
+  settings: VoiceSettings;
+}
+
+export function isVoicePreviewCurrent(
+  preview: VoicePreviewResult | null,
+  text: string,
+  settings: VoiceSettings,
+): preview is VoicePreviewResult {
+  return (
+    !!preview &&
+    preview.text === text.trim() &&
+    preview.settings.engine === settings.engine &&
+    preview.settings.voice === settings.voice &&
+    preview.settings.style === settings.style
+  );
+}
+
 interface VoicePickerProps {
   value: VoiceSettings;
   onChange: (value: VoiceSettings) => void;
   /** Texte lu par le bouton « Tester la voix ». */
   sampleText?: string;
   compact?: boolean;
+  /** Appelé avec la voix générée (audio et minutage des mots). */
+  onPreview?: (result: VoicePreviewResult) => void;
 }
 
 const FALLBACK_SAMPLE = "Découvrez nos nouveautés en magasin, on vous attend !";
@@ -41,7 +68,7 @@ const FALLBACK_SAMPLE = "Découvrez nos nouveautés en magasin, on vous attend !
  * Choix du moteur, de la voix et du ton, avec écoute de l'aperçu.
  * Partagé par les pages Reel (vidéo et images, bureau et mobile).
  */
-export function VoicePicker({ value, onChange, sampleText, compact = false }: VoicePickerProps) {
+export function VoicePicker({ value, onChange, sampleText, compact = false, onPreview }: VoicePickerProps) {
   const { toast } = useToast();
   const [loading, setLoading] = useState(false);
   const [playing, setPlaying] = useState(false);
@@ -68,8 +95,9 @@ export function VoicePicker({ value, onChange, sampleText, compact = false }: Vo
     if (playing) return stop();
     setLoading(true);
     try {
+      const text = sampleText?.trim() || FALLBACK_SAMPLE;
       const response = await apiRequest("POST", "/api/reels/tts-preview", {
-        text: sampleText?.trim() || FALLBACK_SAMPLE,
+        text,
         ttsEngine: value.engine,
         ttsVoice: value.voice,
         ttsStyle: value.style,
@@ -78,7 +106,11 @@ export function VoicePicker({ value, onChange, sampleText, compact = false }: Vo
       for (const warning of data.warnings ?? []) {
         toast({ title: "Voix de secours utilisée", description: warning });
       }
-      const audio = new Audio(`data:audio/mpeg;base64,${data.audioBase64}`);
+      const audioUrl = `data:audio/mpeg;base64,${data.audioBase64}`;
+      if (sampleText?.trim()) {
+        onPreview?.({ audioUrl, duration: data.duration, words: data.words ?? [], text, settings: value });
+      }
+      const audio = new Audio(audioUrl);
       audioRef.current?.pause();
       audioRef.current = audio;
       audio.onended = () => setPlaying(false);

client/src/pages/mobile/new-reel.tsx

@@ -16,7 +16,10 @@ import { Switch } from "@/components/ui/switch";
 import { Label } from "@/components/ui/label";
 import { Slider } from "@/components/ui/slider";
 import { useToast } from "@/hooks/use-toast";
-import { VoicePicker, type VoiceSettings } from "@/components/reels/voice-picker";
+import { VoicePicker, isVoicePreviewCurrent, type VoicePreviewResult, type VoiceSettings } from "@/components/reels/voice-picker";
+import { CaptionStylePicker } from "@/components/reels/caption-style-picker";
+import { ReelPreview } from "@/components/reels/reel-preview";
+import { DEFAULT_CAPTION_STYLE, type CaptionStyle } from "@shared/captions";
 import { DEFAULT_TTS_STYLE, DEFAULT_VOICE } from "@shared/voices";
 import { apiRequest, queryClient, handleUnauthorized } from "@/lib/queryClient";
 import type { SocialPage, Media } from "@shared/schema";
@@ -67,6 +70,10 @@ export default function MobileNewReel() {
         style: DEFAULT_TTS_STYLE,
     });
     const { engine: ttsEngine, voice: ttsVoice, style: ttsStyle } = voiceSettings;
+    const [captionStyle, setCaptionStyle] = useState<CaptionStyle>(DEFAULT_CAPTION_STYLE);
+    const [voicePreview, setVoicePreview] = useState<VoicePreviewResult | null>(null);
+    const currentVoice = isVoicePreviewCurrent(voicePreview, overlayText, voiceSettings) ? voicePreview : null;
+    const { data: reelConfig } = useQuery<{ logoUrl: string | null }>({ queryKey: ['/api/reels/config'] });
 
     // État audio preview
     const [isPlaying, setIsPlaying] = useState<string | null>(null);
@@ -203,8 +210,10 @@ export default function MobileNewReel() {
         onSuccess: async (data) => {
             await queryClient.invalidateQueries({ queryKey: ['/api/scheduled-posts'], refetchType: 'all' });
             toast({
-                title: data.success ? "Reel créé !" : "Attention",
-                description: data.success ? "Publication réussie" : "Certaines erreurs",
+                title: "Création du Reel lancée",
+                description: data.queued
+                    ? "Un autre Reel est en cours : le vôtre démarrera juste après."
+                    : "Suivez l'avancement sur l'accueil.",
             });
             navigate('/');
         },
@@ -264,6 +273,7 @@ export default function MobileNewReel() {
             ttsEngine,
             ttsVoice,
             ttsStyle,
+            captionStyle,
             enableEndingEffect,
         });
     };
@@ -456,6 +466,10 @@ export default function MobileNewReel() {
                                 className="text-lg"
                                 rows={3}
                             />
+                            <div className="space-y-1.5 mt-3">
+                                <Label className="text-xs font-medium">Style des sous-titres</Label>
+                                <CaptionStylePicker value={captionStyle} onChange={setCaptionStyle} compact />
+                            </div>
                             <div className="flex items-center space-x-2 mt-4">
                                 <Switch
                                     id="enable-ending-effect"
@@ -490,6 +504,7 @@ export default function MobileNewReel() {
                                             value={voiceSettings}
                                             onChange={setVoiceSettings}
                                             sampleText={overlayText}
+                                            onPreview={setVoicePreview}
                                             compact
                                         />
                                     </div>
@@ -524,6 +539,31 @@ export default function MobileNewReel() {
                 {/* PUBLISH STEP */}
                 {currentStep === 'publish' && (
                     <div className="space-y-6">
+                        {selectedVideo && (
+                            <Card>
+                                <CardHeader className="pb-3">
+                                    <CardTitle className="text-base">Aperçu</CardTitle>
+                                </CardHeader>
+                                <CardContent>
+                                    <div className="max-w-[260px] mx-auto">
+                                        <ReelPreview
+                                            kind="video"
+                                            videoUrl={selectedVideo.originalUrl}
+                                            text={overlayText}
+                                            showCaptions
+                                            captionStyle={captionStyle}
+                                            ttsEnabled={ttsEnabled}
+                                            voice={currentVoice}
+                                            musicUrl={selectedTrack?.previewUrl}
+                                            musicVolume={musicVolume[0] / 100}
+                                            logoUrl={reelConfig?.logoUrl}
+                                            storeName={pages.find((p) => p.id === selectedPages[0])?.pageName}
+                                            endingEffect={enableEndingEffect}
+                                        />
+                                    </div>
+                                </CardContent>
+                            </Card>
+                        )}
                         <Card>
                             <CardHeader className="pb-3">
                                 <CardTitle className="text-base">Diffusion</CardTitle>

client/src/pages/mobile/remotion-video.tsx

@@ -1,6 +1,9 @@
-import { useState, useRef } from "react";
+import { useEffect, useMemo, useState, useRef } from "react";
 import { useToast } from "@/hooks/use-toast";
-import { VoicePicker, type VoiceSettings } from "@/components/reels/voice-picker";
+import { VoicePicker, isVoicePreviewCurrent, type VoicePreviewResult, type VoiceSettings } from "@/components/reels/voice-picker";
+import { CaptionStylePicker } from "@/components/reels/caption-style-picker";
+import { ReelPreview } from "@/components/reels/reel-preview";
+import { DEFAULT_CAPTION_STYLE, type CaptionStyle } from "@shared/captions";
 import { DEFAULT_TTS_STYLE, DEFAULT_VOICE } from "@shared/voices";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
@@ -50,6 +53,11 @@ export default function MobileRemotionVideoPage() {
   const [scheduledDate, setScheduledDate] = useState<Date | undefined>(undefined);
   const [publishDescription, setPublishDescription] = useState("");
   const [isPublishing, setIsPublishing] = useState(false);
+  const [captionStyle, setCaptionStyle] = useState<CaptionStyle>(DEFAULT_CAPTION_STYLE);
+  const [voicePreview, setVoicePreview] = useState<VoicePreviewResult | null>(null);
+  const [renderProgress, setRenderProgress] = useState(0);
+  const currentVoice = isVoicePreviewCurrent(voicePreview, overlayText, voiceSettings) ? voicePreview : null;
+  const { data: reelConfig } = useQuery<{ logoUrl: string | null }>({ queryKey: ['/api/reels/config'] });
   const audioRef = useRef<HTMLAudioElement>(null);
   const cameraInputRef = useRef<HTMLInputElement>(null);
   const galleryInputRef = useRef<HTMLInputElement>(null);
@@ -59,6 +67,13 @@ export default function MobileRemotionVideoPage() {
   const { data: audioTracks = [], isLoading: tracksLoading } = useQuery<AudioTrack[]>({ queryKey: ['/api/audio-tracks'] });
   const { data: socialPages = [] } = useQuery<SocialPage[]>({ queryKey: ['/api/pages'] });
 
+  // Aperçu : URL locales des fichiers choisis, libérées quand ils changent
+  const uploadedImageUrls = useMemo(() => images.map((file) => URL.createObjectURL(file)), [images]);
+  useEffect(() => () => uploadedImageUrls.forEach((url) => URL.revokeObjectURL(url)), [uploadedImageUrls]);
+  const musicFileUrl = useMemo(() => (musicFile ? URL.createObjectURL(musicFile) : undefined), [musicFile]);
+  useEffect(() => () => { if (musicFileUrl) URL.revokeObjectURL(musicFileUrl); }, [musicFileUrl]);
+  const previewImages = [...selectedLibraryImages.map((m) => m.originalUrl), ...uploadedImageUrls];
+
   const facebookPages = socialPages.filter(p => p.platform === 'facebook');
   const tiktokAccounts = socialPages.filter(p => p.platform === 'tiktok');
 
@@ -142,6 +157,7 @@ export default function MobileRemotionVideoPage() {
   const handleGenerate = async () => {
     if (totalSelected < 3) { toast({ title: "Minimum 3 images", variant: "destructive" }); return; }
     setIsRendering(true);
+    setRenderProgress(0);
     setVideoUrl(null);
     try {
       const formData = new FormData();
@@ -152,6 +168,7 @@ export default function MobileRemotionVideoPage() {
       formData.append("ttsEngine", voiceSettings.engine);
       formData.append("ttsVoice", voiceSettings.voice);
       formData.append("ttsStyle", voiceSettings.style);
+      formData.append("captionStyle", captionStyle);
       if (selectedPageIds[0]) formData.append("selectedPageId", selectedPageIds[0]);
       if (musicFile) { formData.append("music", musicFile); formData.append("musicVolume", String(musicVolume)); }
       else if (selectedTrack) { formData.append("musicTrackUrl", selectedTrack.url); formData.append("musicVolume", String(musicVolume)); }
@@ -180,6 +197,7 @@ export default function MobileRemotionVideoPage() {
               toast({ title: "Erreur de rendu", description: job.error || "Échec du rendu", variant: "destructive" });
               setIsRendering(false);
             } else {
+              setRenderProgress(job.progress ?? 0);
               setTimeout(checkStatus, 3000);
             }
           } catch (e: any) {
@@ -328,6 +346,10 @@ export default function MobileRemotionVideoPage() {
             )}
             <Textarea placeholder="Texte overlay…" value={overlayText}
               onChange={e => setOverlayText(e.target.value)} rows={2} className="text-sm" />
+            <div className="space-y-1.5">
+              <Label className="text-xs font-medium">Style des sous-titres</Label>
+              <CaptionStylePicker value={captionStyle} onChange={setCaptionStyle} compact />
+            </div>
             <div className="flex items-center gap-3">
               <Switch id="tts-m" checked={ttsEnabled} onCheckedChange={setTtsEnabled} />
               <Label htmlFor="tts-m" className="text-sm">Voix TTS</Label>
@@ -336,7 +358,7 @@ export default function MobileRemotionVideoPage() {
               <div className="space-y-2">
                 <p className="text-xs text-muted-foreground">TTS — voix activée</p>
 
-                <VoicePicker value={voiceSettings} onChange={setVoiceSettings} sampleText={overlayText} compact />
+                <VoicePicker value={voiceSettings} onChange={setVoiceSettings} sampleText={overlayText} onPreview={setVoicePreview} compact />
               </div>
             )}
           </CardContent>
@@ -433,10 +455,37 @@ export default function MobileRemotionVideoPage() {
           </CardContent>
         </Card>
 
+        {/* Aperçu en direct */}
+        {previewImages.length > 0 && (
+          <Card>
+            <CardHeader className="pb-3">
+              <CardTitle className="text-base">Aperçu</CardTitle>
+            </CardHeader>
+            <CardContent>
+              <div className="max-w-[260px] mx-auto">
+                <ReelPreview
+                  kind="images"
+                  images={previewImages}
+                  text={overlayText}
+                  showCaptions
+                  captionStyle={captionStyle}
+                  ttsEnabled={ttsEnabled}
+                  voice={currentVoice}
+                  musicUrl={musicFileUrl ?? selectedTrack?.url}
+                  musicVolume={musicVolume}
+                  logoUrl={reelConfig?.logoUrl}
+                  storeName={socialPages.find((p) => p.id === selectedPageIds[0])?.pageName ?? socialPages[0]?.pageName}
+                  endingEffect
+                />
+              </div>
+            </CardContent>
+          </Card>
+        )}
+
         {/* Générer */}
         <Button onClick={handleGenerate} disabled={isRendering || totalSelected < 3} className="w-full h-12" size="lg">
           {isRendering
-            ? <><Loader2 className="mr-2 h-4 w-4 animate-spin" /> Génération (1-2 min)…</>
+            ? <><Loader2 className="mr-2 h-4 w-4 animate-spin" /> {renderProgress > 0 ? `Rendu en cours… ${renderProgress} %` : "Préparation (voix, images)…"}</>
             : <><Video className="mr-2 h-4 w-4" /> Générer la vidéo MP4</>}
         </Button>
 

client/src/pages/new-reel.tsx

@@ -25,7 +25,10 @@ import {
     SelectValue,
 } from "@/components/ui/select";
 import { useToast } from "@/hooks/use-toast";
-import { VoicePicker, type VoiceSettings } from "@/components/reels/voice-picker";
+import { VoicePicker, isVoicePreviewCurrent, type VoicePreviewResult, type VoiceSettings } from "@/components/reels/voice-picker";
+import { CaptionStylePicker } from "@/components/reels/caption-style-picker";
+import { ReelPreview } from "@/components/reels/reel-preview";
+import { DEFAULT_CAPTION_STYLE, type CaptionStyle } from "@shared/captions";
 import { DEFAULT_TTS_STYLE, DEFAULT_VOICE } from "@shared/voices";
 import { apiRequest, queryClient, handleUnauthorized, getErrorMessage } from "@/lib/queryClient";
 import type { SocialPage, Media } from "@shared/schema";
@@ -89,6 +92,11 @@ export default function NewReel() {
         style: DEFAULT_TTS_STYLE,
     });
     const { engine: ttsEngine, voice: ttsVoice, style: ttsStyle } = voiceSettings;
+    const [captionStyle, setCaptionStyle] = useState<CaptionStyle>(DEFAULT_CAPTION_STYLE);
+    // Dernière voix générée : l'aperçu l'utilise tant que texte et réglages n'ont pas changé
+    const [voicePreview, setVoicePreview] = useState<VoicePreviewResult | null>(null);
+    const currentVoice = isVoicePreviewCurrent(voicePreview, overlayText, voiceSettings) ? voicePreview : null;
+    const { data: reelConfig } = useQuery<{ logoUrl: string | null }>({ queryKey: ['/api/reels/config'] });
 
     // Enable TTS by default on mobile
     useEffect(() => {
@@ -245,10 +253,10 @@ export default function NewReel() {
         onSuccess: async (data) => {
             await queryClient.invalidateQueries({ queryKey: ['/api/scheduled-posts'], refetchType: 'all' });
             toast({
-                title: data.success ? "Reel créé !" : "Reel créé avec avertissements",
-                description: data.success
-                    ? "Votre Reel a été publié avec succès"
-                    : "Certaines pages ont échoué",
+                title: "Création du Reel lancée",
+                description: data.queued
+                    ? "Un autre Reel est en cours : le vôtre démarrera juste après. Suivez l'avancement sur le tableau de bord."
+                    : "Suivez l'avancement sur le tableau de bord.",
             });
             navigate('/');
         },
@@ -406,6 +414,7 @@ export default function NewReel() {
             ttsEngine,
             ttsVoice,
             ttsStyle,
+            captionStyle,
             drawText,
             stabilize: stabilize,
             enableEndingEffect,
@@ -783,6 +792,15 @@ export default function NewReel() {
                                                 </Label>
                                             </div>
 
+                                            {drawText && (
+                                                <div className="mt-3 ml-12">
+                                                    <Label className="text-sm font-medium">Style des sous-titres</Label>
+                                                    <div className="mt-2">
+                                                        <CaptionStylePicker value={captionStyle} onChange={setCaptionStyle} />
+                                                    </div>
+                                                </div>
+                                            )}
+
                                             <div className="flex items-center space-x-2 mt-4">
                                                 <Switch
                                                     id="enable-ending-effect"
@@ -817,6 +835,7 @@ export default function NewReel() {
                                                             value={voiceSettings}
                                                             onChange={setVoiceSettings}
                                                             sampleText={overlayText}
+                                                            onPreview={setVoicePreview}
                                                         />
                                                     </div>
 
@@ -962,31 +981,20 @@ export default function NewReel() {
                                 </CardHeader>
                                 <CardContent>
                                     {selectedVideo ? (
-                                        <div className="relative aspect-[9/16] bg-black rounded-lg overflow-hidden">
-                                            <video
-                                                src={selectedVideo.originalUrl}
-                                                className="w-full h-full object-cover"
-                                                muted
-                                                playsInline
-                                                loop
-                                                autoPlay
+                                        <ReelPreview
+                                            kind="video"
+                                            videoUrl={selectedVideo.originalUrl}
+                                            text={overlayText}
+                                            showCaptions={drawText}
+                                            captionStyle={captionStyle}
+                                            ttsEnabled={ttsEnabled}
+                                            voice={currentVoice}
+                                            musicUrl={selectedTrack?.previewUrl}
+                                            musicVolume={musicVolume[0] / 100}
+                                            logoUrl={reelConfig?.logoUrl}
+                                            storeName={pages.find((p) => p.id === selectedPages[0])?.pageName}
+                                            endingEffect={enableEndingEffect}
                                         />
-                                            {overlayText && (
-                                                <div className="absolute inset-0 flex items-center justify-center p-4">
-                                                    <p className="text-white text-center text-lg font-bold drop-shadow-lg">
-                                                        {overlayText}
-                                                    </p>
-                                                </div>
-                                            )}
-                                            {selectedTrack && (
-                                                <div className="absolute bottom-4 left-4 right-4 bg-black/50 rounded-lg p-2 flex items-center gap-2">
-                                                    <Music className="w-4 h-4 text-white" />
-                                                    <span className="text-white text-sm truncate">
-                                                        {selectedTrack.title} - {selectedTrack.artist}
-                                                    </span>
-                                                </div>
-                                            )}
-                                        </div>
                                     ) : (
                                         <div className="aspect-[9/16] bg-muted rounded-lg flex items-center justify-center">
                                             <div className="text-center text-muted-foreground">
@@ -1026,115 +1034,6 @@ export default function NewReel() {
                     </div >
                 </div >
             </main >
-            {/* Overlay de progression */}
-            < ProcessingOverlay
-                isVisible={createReelMutation.isPending}
-                stabilize={stabilize}
-                ttsEnabled={ttsEnabled}
-            />
-        </div >
-    );
-}
-
-function ProcessingOverlay({ isVisible, stabilize, ttsEnabled }: { isVisible: boolean; stabilize: boolean; ttsEnabled: boolean }) {
-    const [progress, setProgress] = useState(0);
-    const [status, setStatus] = useState("Initialisation...");
-
-    useEffect(() => {
-        if (!isVisible) {
-            setProgress(0);
-            return;
-        }
-
-        setProgress(0);
-        setStatus("Préparation des fichiers...");
-
-        const timeouts: any[] = [];
-        let interval: any;
-
-        // Sequence de simulation
-        // 1. 2s: Téléchargement
-        timeouts.push(setTimeout(() => {
-            setStatus("Téléchargement des médias...");
-            setProgress(10);
-        }, 1500));
-
-        // 2. 4s: Audio/TTS
-        timeouts.push(setTimeout(() => {
-            setStatus(ttsEnabled ? "Génération de la voix IA..." : "Mixage audio...");
-            setProgress(25);
-        }, 3500));
-
-        // 3. 7s: Stabilisation ou Encodage
-        timeouts.push(setTimeout(() => {
-            if (stabilize) {
-                setStatus("Stabilisation vidéo (Traitement long)...");
-                setProgress(35);
-
-                // Progression lente : +1% toutes les 800ms
-                // Ça permet de couvrir ~45 secondes avant d'arriver à 90%
-                let p = 35;
-                interval = setInterval(() => {
-                    if (p < 90) {
-                        p++;
-                        setProgress(p);
-                    }
-                }, 800);
-            } else {
-                setStatus("Encodage optimisé...");
-                setProgress(40);
-
-                // Progression pour encodage standard (~10-15s)
-                let p = 40;
-                interval = setInterval(() => {
-                    if (p < 90) {
-                        p += 2;
-                        setProgress(p);
-                    }
-                }, 500);
-            }
-        }, 6500));
-
-        // Nettoyage
-        return () => {
-            timeouts.forEach(clearTimeout);
-            if (interval) clearInterval(interval);
-        };
-    }, [isVisible, stabilize, ttsEnabled]);
-
-    if (!isVisible) return null;
-
-    return (
-        <div className="fixed inset-0 z-[60] bg-black/90 flex flex-col items-center justify-center p-4 backdrop-blur-md animate-in fade-in duration-300">
-            <div className="w-full max-w-md space-y-8 text-center">
-                <div className="relative w-24 h-24 mx-auto mb-8">
-                    <Loader2 className="w-full h-full text-primary animate-spin" />
-                    <div className="absolute inset-0 flex items-center justify-center font-bold text-xl">
-                        {progress}%
-                    </div>
-                </div>
-
-                <div className="space-y-4">
-                    <h3 className="text-2xl font-bold text-white tracking-tight">Création de votre Reel</h3>
-                    <p className="text-lg text-muted-foreground animate-pulse">
-                        {status}
-                    </p>
-                </div>
-
-                <div className="w-full h-2 bg-secondary/30 rounded-full overflow-hidden">
-                    <div
-                        className="h-full bg-primary transition-all duration-300 ease-out"
-                        style={{ width: `${progress}%` }}
-                    />
-                </div>
-
-                {stabilize && (
-                    <div className="flex items-center justify-center gap-2 text-sm text-yellow-500/80 bg-yellow-500/10 py-2 px-4 rounded-full mx-auto w-fit">
-                        <Sparkles className="w-4 h-4" />
-                        <span>Stabilisation activée : traitement prolongé</span>
-                    </div>
-                )}
-            </div>
         </div >
     );
 }

client/src/pages/remotion-video.tsx

@@ -1,8 +1,11 @@
-import { useState, useRef } from "react";
+import { useEffect, useMemo, useState, useRef } from "react";
 import Sidebar from "@/components/sidebar";
 import TopBar from "@/components/topbar";
 import { useToast } from "@/hooks/use-toast";
-import { VoicePicker, type VoiceSettings } from "@/components/reels/voice-picker";
+import { VoicePicker, isVoicePreviewCurrent, type VoicePreviewResult, type VoiceSettings } from "@/components/reels/voice-picker";
+import { CaptionStylePicker } from "@/components/reels/caption-style-picker";
+import { ReelPreview } from "@/components/reels/reel-preview";
+import { DEFAULT_CAPTION_STYLE, type CaptionStyle } from "@shared/captions";
 import { DEFAULT_TTS_STYLE, DEFAULT_VOICE } from "@shared/voices";
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
 import { Button } from "@/components/ui/button";
@@ -51,6 +54,11 @@ export default function RemotionVideoPage() {
   const [scheduledDate, setScheduledDate] = useState<Date | undefined>(undefined);
   const [publishDescription, setPublishDescription] = useState("");
   const [isPublishing, setIsPublishing] = useState(false);
+  const [captionStyle, setCaptionStyle] = useState<CaptionStyle>(DEFAULT_CAPTION_STYLE);
+  const [voicePreview, setVoicePreview] = useState<VoicePreviewResult | null>(null);
+  const [renderProgress, setRenderProgress] = useState(0);
+  const currentVoice = isVoicePreviewCurrent(voicePreview, overlayText, voiceSettings) ? voicePreview : null;
+  const { data: reelConfig } = useQuery<{ logoUrl: string | null }>({ queryKey: ['/api/reels/config'] });
   const audioRef = useRef<HTMLAudioElement>(null);
   const { toast } = useToast();
 
@@ -58,6 +66,13 @@ export default function RemotionVideoPage() {
   const { data: audioTracks = [], isLoading: tracksLoading } = useQuery<AudioTrack[]>({ queryKey: ['/api/audio-tracks'] });
   const { data: socialPages = [] } = useQuery<SocialPage[]>({ queryKey: ['/api/pages'] });
 
+  // Aperçu : URL locales des fichiers choisis, libérées quand ils changent
+  const uploadedImageUrls = useMemo(() => images.map((file) => URL.createObjectURL(file)), [images]);
+  useEffect(() => () => uploadedImageUrls.forEach((url) => URL.revokeObjectURL(url)), [uploadedImageUrls]);
+  const musicFileUrl = useMemo(() => (musicFile ? URL.createObjectURL(musicFile) : undefined), [musicFile]);
+  useEffect(() => () => { if (musicFileUrl) URL.revokeObjectURL(musicFileUrl); }, [musicFileUrl]);
+  const previewImages = [...selectedLibraryImages.map((m) => m.originalUrl), ...uploadedImageUrls];
+
   const facebookPages = socialPages.filter(p => p.platform === 'facebook');
   const tiktokAccounts = socialPages.filter(p => p.platform === 'tiktok');
 
@@ -108,6 +123,7 @@ export default function RemotionVideoPage() {
   const handleGenerate = async () => {
     if (totalSelected < 3) { toast({ title: "Minimum 3 images requises.", variant: "destructive" }); return; }
     setIsRendering(true);
+    setRenderProgress(0);
     setVideoUrl(null);
     try {
       const formData = new FormData();
@@ -118,6 +134,7 @@ export default function RemotionVideoPage() {
       formData.append("ttsEngine", voiceSettings.engine);
       formData.append("ttsVoice", voiceSettings.voice);
       formData.append("ttsStyle", voiceSettings.style);
+      formData.append("captionStyle", captionStyle);
       if (selectedPageIds[0]) formData.append("selectedPageId", selectedPageIds[0]);
       if (musicFile) { formData.append("music", musicFile); formData.append("musicVolume", String(musicVolume)); }
       else if (selectedTrack) { formData.append("musicTrackUrl", selectedTrack.url); formData.append("musicVolume", String(musicVolume)); }
@@ -146,6 +163,7 @@ export default function RemotionVideoPage() {
               toast({ title: "Erreur de rendu", description: job.error || "Échec du rendu", variant: "destructive" });
               setIsRendering(false);
             } else {
+              setRenderProgress(job.progress ?? 0);
               setTimeout(checkStatus, 3000);
             }
           } catch (e: any) {
@@ -268,6 +286,10 @@ export default function RemotionVideoPage() {
           )}
           <Textarea placeholder="Votre texte overlay..." value={overlayText}
             onChange={e => setOverlayText(e.target.value)} rows={3} />
+          <div className="space-y-1.5">
+            <Label className="text-sm font-medium">Style des sous-titres</Label>
+            <CaptionStylePicker value={captionStyle} onChange={setCaptionStyle} />
+          </div>
           <div className="flex items-center gap-3">
             <Switch id="tts" checked={ttsEnabled} onCheckedChange={setTtsEnabled} />
             <Label htmlFor="tts">Activer la voix TTS</Label>
@@ -276,7 +298,7 @@ export default function RemotionVideoPage() {
             <div className="space-y-3 p-3 bg-muted/30 rounded-lg border">
               <p className="text-sm text-muted-foreground">TTS — voix activée</p>
 
-              <VoicePicker value={voiceSettings} onChange={setVoiceSettings} sampleText={overlayText} />
+              <VoicePicker value={voiceSettings} onChange={setVoiceSettings} sampleText={overlayText} onPreview={setVoicePreview} />
             </div>
           )}
         </CardContent>
@@ -379,10 +401,37 @@ export default function RemotionVideoPage() {
         </CardContent>
       </Card>
 
+      {/* Aperçu en direct */}
+      {previewImages.length > 0 && (
+        <Card>
+          <CardHeader className="pb-3">
+            <CardTitle className="text-base">Aperçu</CardTitle>
+          </CardHeader>
+          <CardContent>
+            <div className="max-w-[300px] mx-auto">
+              <ReelPreview
+                kind="images"
+                images={previewImages}
+                text={overlayText}
+                showCaptions
+                captionStyle={captionStyle}
+                ttsEnabled={ttsEnabled}
+                voice={currentVoice}
+                musicUrl={musicFileUrl ?? selectedTrack?.url}
+                musicVolume={musicVolume}
+                logoUrl={reelConfig?.logoUrl}
+                storeName={socialPages.find((p) => p.id === selectedPageIds[0])?.pageName ?? socialPages[0]?.pageName}
+                endingEffect
+              />
+            </div>
+          </CardContent>
+        </Card>
+      )}
+
       {/* Générer */}
       <Button onClick={handleGenerate} disabled={isRendering || totalSelected < 3} className="w-full" size="lg">
         {isRendering
-          ? <><Loader2 className="mr-2 h-4 w-4 animate-spin" /> Génération en cours (1-2 min)...</>
+          ? <><Loader2 className="mr-2 h-4 w-4 animate-spin" /> {renderProgress > 0 ? `Rendu en cours… ${renderProgress} %` : "Préparation (voix, images)…"}</>
           : <><Video className="mr-2 h-4 w-4" /> Générer la vidéo</>}
       </Button>
 

client/src/remotion/ImageComposition.tsx

@@ -1,21 +1,22 @@
-import { AbsoluteFill, Img, Sequence, useVideoConfig, useCurrentFrame, Html5Audio, spring, interpolate } from "remotion";
-
-export type WordTiming = {
-  word: string;
-  startFrame: number;
-  endFrame: number;
-};
+import React from "react";
+import { AbsoluteFill, Html5Audio, Img, Sequence, interpolate, useCurrentFrame, useVideoConfig } from "remotion";
+import type { CaptionStyle, TimedWord } from "@shared/captions";
+import { Captions } from "./components/Captions";
+import { Outro, Watermark } from "./components/Branding";
 
 export type ImageCompositionProps = {
   images: string[];
-  overlayText?: string;
+  totalDuration: number;
+  /** Mots minutés depuis le début de la vidéo (la voix démarre à 0). */
+  words: TimedWord[];
+  captionStyle: CaptionStyle;
   audioUrl?: string;
-  wordTimings?: WordTiming[];
   musicUrl?: string;
   musicVolume?: number;
   logoUrl?: string;
   storeName?: string;
-  endingFrames?: number;
+  /** Durée de la diapositive de fin (logo + nom du magasin), en secondes. */
+  endingSeconds?: number;
 };
 
 /**
@@ -75,217 +76,45 @@ const ImageSlide: React.FC<{ src: string; effectIndex: number }> = ({ src, effec
   );
 };
 
-/**
- * CaptionGroup — renders a group of words (CapCut-style).
- * Active word is highlighted in yellow with glow; others are white.
- * Background: semi-transparent dark pill.
- */
-const CaptionGroup: React.FC<{
-  words: WordTiming[];
-  activeIdx: number;   // index within this group (0-3), -1 if none active
-  groupFirstFrame: number;
-  fps: number;
-}> = ({ words, activeIdx, groupFirstFrame, fps }) => {
-  const frame = useCurrentFrame();
-
-  // Fade in when this group first appears
-  const fadeIn = spring({
-    frame: frame - groupFirstFrame,
-    fps,
-    config: { damping: 30, stiffness: 120 },
-    durationInFrames: 10,
-  });
-
-  return (
-    <div
-      style={{
-        display: "flex",
-        flexDirection: "row",
-        flexWrap: "wrap",
-        justifyContent: "center",
-        alignItems: "center",
-        gap: "0 22px",
-        maxWidth: "90%",
-        opacity: fadeIn,
-      }}
-    >
-      {words.map((w, i) => {
-        const isActive = i === activeIdx;
-        return (
-          <span
-            key={i}
-            style={{
-              fontFamily: "'Arial Black', 'Impact', 'Helvetica Neue', sans-serif",
-              fontSize: isActive ? 82 : 74,
-              fontWeight: 900,
-              lineHeight: 1.15,
-              color: isActive ? "#FFE600" : "white",
-              textTransform: "uppercase",
-              textShadow: isActive
-                ? "0 0 30px rgba(255,230,0,0.6), 0 4px 24px rgba(0,0,0,0.95)"
-                : "0 3px 18px rgba(0,0,0,0.9)",
-              WebkitTextStroke: isActive ? "3px rgba(0,0,0,0.85)" : "2px rgba(0,0,0,0.75)",
-              display: "inline-block",
-              transform: isActive ? "scale(1.1)" : "scale(1)",
-              transition: "transform 0.05s",
-            }}
-          >
-            {w.word}
-          </span>
-        );
-      })}
-    </div>
-  );
-};
-
-export const ImageComposition = ({
-  images, audioUrl, wordTimings, musicUrl, musicVolume = 0.3,
-  logoUrl, storeName, endingFrames = 90,
-}: ImageCompositionProps) => {
+/** Reel à partir d'images : diaporama animé, voix, sous-titres et diapositive de fin. */
+export const ImageComposition: React.FC<ImageCompositionProps> = ({
+  images, words, captionStyle, audioUrl, musicUrl, musicVolume = 0.3, logoUrl, storeName, endingSeconds = 3,
+}) => {
   const { fps, durationInFrames } = useVideoConfig();
-  const frame = useCurrentFrame();
-
-  const hasEnding = !!(logoUrl || storeName);
-  const effectiveEndingFrames = hasEnding ? endingFrames : 0;
-  const contentFrames = durationInFrames - effectiveEndingFrames;
-  const durationPerImage = Math.floor(contentFrames / Math.max(images.length, 1));
-  const endingStart = contentFrames;
-
-  // Ending slide spring animation
-  const endingProgress = spring({
-    frame: frame - endingStart,
-    fps,
-    config: { damping: 20, stiffness: 80 },
-    durationInFrames: 30,
-  });
-
-  // Group words into sets of 3 for caption display
-  const WORDS_PER_GROUP = 3;
-  const activeWordIdx = wordTimings
-    ? wordTimings.findIndex(w => frame >= w.startFrame && frame < w.endFrame)
-    : -1;
-
-  // Only show caption when a word is actively being spoken
-  const renderCaption = frame < endingStart && activeWordIdx >= 0;
-
-  const groupIdx = activeWordIdx >= 0 ? Math.floor(activeWordIdx / WORDS_PER_GROUP) : 0;
-  const groupStart = groupIdx * WORDS_PER_GROUP;
-  const groupWords = wordTimings ? wordTimings.slice(groupStart, groupStart + WORDS_PER_GROUP) : [];
-  const activeIdxInGroup = activeWordIdx - groupStart;
-
-  // First frame of the current group (for fade-in)
-  const groupFirstFrame = groupWords.length > 0 ? groupWords[0].startFrame : 0;
+  const hasEnding = Boolean(logoUrl || storeName) && endingSeconds > 0;
+  const endingFrames = hasEnding ? Math.round(endingSeconds * fps) : 0;
+  const contentFrames = durationInFrames - endingFrames;
+  const perImage = Math.floor(contentFrames / Math.max(images.length, 1));
+  const endingStart = contentFrames / fps;
 
   return (
     <AbsoluteFill style={{ backgroundColor: "black" }}>
-      {/* Images — displayed immediately, no entrance transition */}
       {images.map((imgUrl, index) => (
-        <Sequence key={index} from={index * durationPerImage} durationInFrames={durationPerImage}>
+        <Sequence key={index} from={index * perImage} durationInFrames={perImage}>
           <ImageSlide src={imgUrl} effectIndex={index} />
         </Sequence>
       ))}
 
-      {/* TTS Audio */}
       {audioUrl && <Html5Audio src={audioUrl} />}
-
-      {/* Background music */}
-      {musicUrl && <Html5Audio src={musicUrl} volume={musicVolume} />}
-
-      {/* Caption overlay — CapCut style */}
-      {renderCaption && (
-        <AbsoluteFill
-          style={{
-            justifyContent: "flex-end",
-            alignItems: "center",
-            paddingBottom: 180,
-          }}
-        >
-          {/* Semi-transparent dark background pill */}
-          <div
-            style={{
-              backgroundColor: "rgba(0,0,0,0.55)",
-              borderRadius: 28,
-              paddingTop: 22,
-              paddingBottom: 22,
-              paddingLeft: 36,
-              paddingRight: 36,
-              maxWidth: "92%",
-              backdropFilter: "blur(4px)",
-            }}
-          >
-            <CaptionGroup
-              words={groupWords}
-              activeIdx={activeIdxInGroup}
-              groupFirstFrame={groupFirstFrame}
-              fps={fps}
-            />
-          </div>
-        </AbsoluteFill>
-      )}
-
-      {/* Logo watermark — bottom right during content */}
-      {logoUrl && frame < endingStart && (
-        <AbsoluteFill style={{ justifyContent: "flex-end", alignItems: "flex-end", padding: 48 }}>
-          <Img
-            src={logoUrl}
-            style={{
-              width: 150,
-              height: 150,
-              objectFit: "contain",
-              opacity: 0.85,
-              borderRadius: 20,
-              filter: "drop-shadow(0 2px 8px rgba(0,0,0,0.5))",
-            }}
-          />
-        </AbsoluteFill>
-      )}
-
-      {/* Ending slide — large centered logo + store name */}
-      {hasEnding && (
-        <Sequence from={endingStart} durationInFrames={effectiveEndingFrames}>
-          <AbsoluteFill
-            style={{
-              backgroundColor: "black",
-              justifyContent: "center",
-              alignItems: "center",
-              flexDirection: "column",
-              gap: 48,
-            }}
-          >
-            {logoUrl && (
-              <Img
-                src={logoUrl}
-                style={{
-                  width: 520,
-                  height: 520,
-                  objectFit: "contain",
-                  opacity: endingProgress,
-                  transform: `scale(${interpolate(endingProgress, [0, 1], [0.65, 1])})`,
-                  borderRadius: 32,
-                  filter: "drop-shadow(0 4px 32px rgba(255,255,255,0.2))",
-                }}
+      {musicUrl && (
+        <Html5Audio
+          src={musicUrl}
+          loop
+          volume={(frame) =>
+            (words.some((w) => frame / fps >= w.start - 0.2 && frame / fps <= w.end + 0.3)
+              ? musicVolume * 0.35
+              : musicVolume) *
+            interpolate(frame, [durationInFrames - fps, durationInFrames], [1, 0], {
+              extrapolateLeft: "clamp",
+              extrapolateRight: "clamp",
+            })
+          }
         />
       )}
-            {storeName && (
-              <div
-                style={{
-                  color: "white",
-                  fontSize: 90,
-                  fontFamily: "'Arial Black', Impact, sans-serif",
-                  fontWeight: 900,
-                  textAlign: "center",
-                  opacity: endingProgress,
-                  letterSpacing: 3,
-                  textShadow: "0 4px 24px rgba(255,255,255,0.2)",
-                  transform: `translateY(${interpolate(endingProgress, [0, 1], [30, 0])}px)`,
-                }}
-              >
-                {storeName}
-              </div>
-            )}
-          </AbsoluteFill>
-        </Sequence>
-      )}
+
+      <Captions words={words} style={captionStyle} hideAfter={hasEnding ? endingStart : null} />
+      {logoUrl && <Watermark logoUrl={logoUrl} until={hasEnding ? endingStart : null} />}
+      {hasEnding && <Outro start={endingStart} logoUrl={logoUrl} storeName={storeName} opaque />}
     </AbsoluteFill>
   );
 };

client/src/remotion/ReelVideo.tsx

@@ -0,0 +1,90 @@
+import React from "react";
+import { AbsoluteFill, Freeze, Html5Audio, OffthreadVideo, Sequence, interpolate, useVideoConfig } from "remotion";
+import { FADE_SECONDS, type CaptionStyle, type TimedWord } from "@shared/captions";
+import { Captions } from "./components/Captions";
+import { FadeOut, Outro, Watermark } from "./components/Branding";
+
+export type ReelVideoProps = {
+  videoUrl: string;
+  /** Durée de la vidéo source (s) : au-delà, la dernière image est figée (aperçu). */
+  videoDuration: number;
+  totalDuration: number;
+  words: TimedWord[];
+  captionStyle: CaptionStyle;
+  logoUrl?: string;
+  storeName?: string;
+  logoStart?: number | null;
+  fadeStart?: number | null;
+  /** Rendu final : piste son déjà mixée (voix, musique baissée sous la voix, niveau normalisé). */
+  mixedAudioUrl?: string;
+  /** Aperçu : pistes séparées, mixées dans le navigateur. */
+  voiceUrl?: string;
+  voiceDelay?: number;
+  musicUrl?: string;
+  musicVolume?: number;
+};
+
+/** Reel à partir d'une vidéo : image, sous-titres animés, logo et effet de fin. */
+export const ReelVideo: React.FC<ReelVideoProps> = (props) => {
+  const { fps } = useVideoConfig();
+  const {
+    videoUrl, videoDuration, totalDuration, words, captionStyle, logoUrl, storeName,
+    logoStart = null, fadeStart = null, mixedAudioUrl, voiceUrl, voiceDelay = 2, musicUrl, musicVolume = 0.25,
+  } = props;
+
+  const videoFrames = Math.max(1, Math.floor(videoDuration * fps));
+  const totalFrames = Math.max(1, Math.round(totalDuration * fps));
+  const hasAddedAudio = Boolean(mixedAudioUrl || voiceUrl || musicUrl);
+  const video = (
+    <OffthreadVideo src={videoUrl} muted={hasAddedAudio} style={{ width: "100%", height: "100%", objectFit: "cover" }} />
+  );
+
+  return (
+    <AbsoluteFill style={{ backgroundColor: "black" }}>
+      {totalFrames > videoFrames ? (
+        <>
+          <Sequence durationInFrames={videoFrames}>{video}</Sequence>
+          <Sequence from={videoFrames}>
+            <Freeze frame={videoFrames - 1}>{video}</Freeze>
+          </Sequence>
+        </>
+      ) : (
+        video
+      )}
+
+      {mixedAudioUrl && <Html5Audio src={mixedAudioUrl} />}
+      {!mixedAudioUrl && voiceUrl && (
+        <Sequence from={Math.round(voiceDelay * fps)}>
+          <Html5Audio src={voiceUrl} />
+        </Sequence>
+      )}
+      {!mixedAudioUrl && musicUrl && (
+        <Html5Audio
+          src={musicUrl}
+          loop
+          volume={(frame) => previewMusicVolume(frame / fps, words, musicVolume, fadeStart)}
+        />
+      )}
+
+      <Captions words={words} style={captionStyle} hideAfter={logoStart} />
+      {logoUrl && <Watermark logoUrl={logoUrl} until={logoStart} />}
+      {logoStart != null && (logoUrl || storeName) && (
+        <Outro start={logoStart} logoUrl={logoUrl} storeName={storeName} />
+      )}
+      {fadeStart != null && <FadeOut start={fadeStart} duration={FADE_SECONDS} />}
+    </AbsoluteFill>
+  );
+};
+
+/** Aperçu : la musique baisse pendant la parole et s'éteint avec le fondu final. */
+function previewMusicVolume(time: number, words: TimedWord[], base: number, fadeStart: number | null): number {
+  const speaking = words.some((w) => time >= w.start - 0.2 && time <= w.end + 0.3);
+  const fade =
+    fadeStart == null
+      ? 1
+      : interpolate(time, [fadeStart, fadeStart + FADE_SECONDS], [1, 0], {
+          extrapolateLeft: "clamp",
+          extrapolateRight: "clamp",
+        });
+  return (speaking ? base * 0.35 : base) * fade;
+}

client/src/remotion/Root.tsx

@@ -1,22 +1,45 @@
-import { Composition } from "remotion";
-import { ImageComposition, ImageCompositionProps } from "./ImageComposition";
+import { Composition, type CalculateMetadataFunction } from "remotion";
+import { DEFAULT_CAPTION_STYLE, REEL_FPS, REEL_HEIGHT, REEL_WIDTH } from "@shared/captions";
+import { ImageComposition, type ImageCompositionProps } from "./ImageComposition";
+import { ReelVideo, type ReelVideoProps } from "./ReelVideo";
+
+/** La durée vient des propriétés : chaque Reel a la sienne. */
+function byTotalDuration<P extends { totalDuration: number }>(): CalculateMetadataFunction<P> {
+  return ({ props }) => ({ durationInFrames: Math.max(1, Math.round(props.totalDuration * REEL_FPS)) });
+}
 
 export const RemotionRoot: React.FC = () => {
   return (
     <>
+      <Composition
+        id="ReelVideo"
+        component={ReelVideo}
+        fps={REEL_FPS}
+        width={REEL_WIDTH}
+        height={REEL_HEIGHT}
+        durationInFrames={REEL_FPS * 10}
+        calculateMetadata={byTotalDuration<ReelVideoProps>()}
+        defaultProps={{
+          videoUrl: "",
+          videoDuration: 10,
+          totalDuration: 10,
+          words: [],
+          captionStyle: DEFAULT_CAPTION_STYLE,
+        } as ReelVideoProps}
+      />
       <Composition
         id="ImageVideo"
         component={ImageComposition}
-        durationInFrames={360}
-        fps={30}
-        width={1080}
-        height={1920}
+        fps={REEL_FPS}
+        width={REEL_WIDTH}
+        height={REEL_HEIGHT}
+        durationInFrames={REEL_FPS * 25}
+        calculateMetadata={byTotalDuration<ImageCompositionProps>()}
         defaultProps={{
-          images: [
-            "https://placehold.co/1080x1920?text=Image+1",
-            "https://placehold.co/1080x1920?text=Image+2",
-            "https://placehold.co/1080x1920?text=Image+3"
-          ],
+          images: ["https://placehold.co/1080x1920?text=Image+1"],
+          totalDuration: 25,
+          words: [],
+          captionStyle: DEFAULT_CAPTION_STYLE,
         } as ImageCompositionProps}
       />
     </>

client/src/remotion/components/Branding.tsx

@@ -0,0 +1,92 @@
+import React from "react";
+import { AbsoluteFill, Img, interpolate, spring, useCurrentFrame, useVideoConfig } from "remotion";
+import { CAPTION_FONT } from "../fonts";
+
+/** Petit logo en haut à droite, hors des zones couvertes par l'interface des réseaux. */
+export const Watermark: React.FC<{ logoUrl: string; until?: number | null }> = ({ logoUrl, until }) => {
+  const frame = useCurrentFrame();
+  const { fps } = useVideoConfig();
+  if (until != null && frame / fps >= until) return null;
+  return (
+    <AbsoluteFill style={{ alignItems: "flex-end", justifyContent: "flex-start", padding: "150px 48px" }}>
+      <Img
+        src={logoUrl}
+        style={{
+          width: 150,
+          height: 150,
+          objectFit: "contain",
+          opacity: 0.9,
+          filter: "drop-shadow(0 2px 10px rgba(0,0,0,0.55))",
+        }}
+      />
+    </AbsoluteFill>
+  );
+};
+
+/**
+ * Effet de fin : l'image s'assombrit, le logo apparaît en grand puis le nom
+ * du magasin glisse en dessous.
+ */
+export const Outro: React.FC<{ start: number; logoUrl?: string; storeName?: string; opaque?: boolean }> = ({
+  start,
+  logoUrl,
+  storeName,
+  opaque = false,
+}) => {
+  const frame = useCurrentFrame();
+  const { fps } = useVideoConfig();
+  const local = frame - Math.round(start * fps);
+  if (local < 0) return null;
+
+  const enter = spring({ frame: local, fps, config: { damping: 18, stiffness: 90 }, durationInFrames: 24 });
+  const name = spring({ frame: local - 8, fps, config: { damping: 18, stiffness: 90 }, durationInFrames: 24 });
+  const dim = interpolate(local, [0, 12], [0, opaque ? 1 : 0.62], { extrapolateRight: "clamp" });
+
+  return (
+    <AbsoluteFill style={{ justifyContent: "center", alignItems: "center", flexDirection: "column", gap: 44 }}>
+      <AbsoluteFill style={{ backgroundColor: `rgba(0,0,0,${dim})` }} />
+      {logoUrl && (
+        <Img
+          src={logoUrl}
+          style={{
+            width: 480,
+            height: 480,
+            objectFit: "contain",
+            opacity: enter,
+            transform: `scale(${interpolate(enter, [0, 1], [0.7, 1])})`,
+            filter: "drop-shadow(0 6px 30px rgba(0,0,0,0.5))",
+          }}
+        />
+      )}
+      {storeName && (
+        <div
+          style={{
+            fontFamily: CAPTION_FONT,
+            fontWeight: 800,
+            fontSize: 84,
+            color: "#FFFFFF",
+            textAlign: "center",
+            maxWidth: "86%",
+            lineHeight: 1.1,
+            opacity: name,
+            transform: `translateY(${interpolate(name, [0, 1], [30, 0])}px)`,
+            textShadow: "0 4px 24px rgba(0,0,0,0.6)",
+          }}
+        >
+          {storeName}
+        </div>
+      )}
+    </AbsoluteFill>
+  );
+};
+
+/** Fondu au noir final. */
+export const FadeOut: React.FC<{ start: number; duration: number }> = ({ start, duration }) => {
+  const frame = useCurrentFrame();
+  const { fps } = useVideoConfig();
+  const opacity = interpolate(frame / fps, [start, start + duration], [0, 1], {
+    extrapolateLeft: "clamp",
+    extrapolateRight: "clamp",
+  });
+  return opacity > 0 ? <AbsoluteFill style={{ backgroundColor: `rgba(0,0,0,${opacity})` }} /> : null;
+};

client/src/remotion/components/Captions.tsx

@@ -0,0 +1,142 @@
+import React, { useMemo } from "react";
+import { AbsoluteFill, spring, useCurrentFrame, useVideoConfig } from "remotion";
+import { groupLines, type CaptionStyle, type TimedWord } from "@shared/captions";
+import { CAPTION_FONT } from "../fonts";
+
+interface CaptionsProps {
+  words: TimedWord[];
+  style: CaptionStyle;
+  /** Les sous-titres disparaissent à partir de cet instant (effet de fin). */
+  hideAfter?: number | null;
+}
+
+/** Couleur de mise en avant du mot prononcé, par style. */
+const ACCENT = { bold: "#FFE600", neon: "#7C3AED", minimal: "#FFFFFF" } as const;
+
+/**
+ * Sous-titres mot à mot, synchronisés sur la voix.
+ * Une ligne de 1 à 3 mots à la fois, placée au-dessus des boutons qu'Instagram
+ * et TikTok superposent en bas de l'écran.
+ */
+export const Captions: React.FC<CaptionsProps> = ({ words, style, hideAfter }) => {
+  const frame = useCurrentFrame();
+  const { fps } = useVideoConfig();
+  const time = frame / fps;
+  const lines = useMemo(() => groupLines(words), [words]);
+
+  if (hideAfter != null && time >= hideAfter) return null;
+
+  // Ligne courante : du début de son premier mot au début de la suivante
+  const index = lines.findIndex((line, i) => {
+    const start = line[0].start;
+    const next = lines[i + 1]?.[0].start ?? line[line.length - 1].end + 0.4;
+    return time >= start && time < next;
+  });
+  if (index < 0) return null;
+  const line = lines[index];
+
+  const lineFrame = Math.round(line[0].start * fps);
+  const appear = spring({ frame: frame - lineFrame, fps, config: { damping: 14, stiffness: 180 }, durationInFrames: 8 });
+
+  return (
+    <AbsoluteFill style={{ justifyContent: "flex-end", alignItems: "center", paddingBottom: 520 }}>
+      <div
+        style={{
+          display: "flex",
+          flexWrap: "wrap",
+          justifyContent: "center",
+          alignItems: "center",
+          gap: style === "neon" ? "12px 12px" : style === "bold" ? "4px 38px" : "0 24px",
+          maxWidth: "84%",
+          transform: `scale(${0.85 + 0.15 * appear})`,
+          opacity: appear,
+        }}
+      >
+        {line.map((word, i) => {
+          const spoken = time >= word.start;
+          const active = spoken && (i === line.length - 1 || time < line[i + 1].start);
+          const pop = spring({
+            frame: frame - Math.round(word.start * fps),
+            fps,
+            config: { damping: 12, stiffness: 220 },
+            durationInFrames: 6,
+          });
+          return (
+            <Word key={`${index}-${i}`} text={word.text} style={style} active={active} spoken={spoken} pop={pop} />
+          );
+        })}
+      </div>
+    </AbsoluteFill>
+  );
+};
+
+const Word: React.FC<{ text: string; style: CaptionStyle; active: boolean; spoken: boolean; pop: number }> = ({
+  text,
+  style,
+  active,
+  spoken,
+  pop,
+}) => {
+  const base: React.CSSProperties = {
+    fontFamily: CAPTION_FONT,
+    display: "inline-block",
+    lineHeight: 1.1,
+    textAlign: "center",
+    paintOrder: "stroke fill",
+  };
+
+  if (style === "bold") {
+    return (
+      <span
+        style={{
+          ...base,
+          fontSize: 92,
+          fontWeight: 900,
+          textTransform: "uppercase",
+          color: active ? ACCENT.bold : "#FFFFFF",
+          WebkitTextStroke: "12px #000000",
+          textShadow: "0 8px 24px rgba(0,0,0,0.55)",
+          transform: `scale(${active ? 1 + 0.12 * pop : 1})`,
+        }}
+      >
+        {text}
+      </span>
+    );
+  }
+
+  if (style === "neon") {
+    return (
+      <span
+        style={{
+          ...base,
+          fontSize: 80,
+          fontWeight: 800,
+          color: "#FFFFFF",
+          padding: "6px 18px",
+          borderRadius: 18,
+          backgroundColor: active ? ACCENT.neon : "rgba(0,0,0,0.45)",
+          boxShadow: active ? "0 0 36px rgba(124,58,237,0.75)" : "none",
+          transform: `scale(${active ? 1 + 0.08 * pop : 1})`,
+        }}
+      >
+        {text}
+      </span>
+    );
+  }
+
+  return (
+    <span
+      style={{
+        ...base,
+        fontSize: 78,
+        fontWeight: 700,
+        color: ACCENT.minimal,
+        opacity: spoken ? 1 : 0.45,
+        textShadow: "0 4px 18px rgba(0,0,0,0.85), 0 0 2px rgba(0,0,0,0.9)",
+        transform: `translateY(${active ? -6 * pop : 0}px)`,
+      }}
+    >
+      {text}
+    </span>
+  );
+};

client/src/remotion/fonts.ts

@@ -0,0 +1,14 @@
+/**
+ * Police des sous-titres et de l'effet de fin, embarquée dans le bundle : le
+ * rendu ne dépend d'aucun service externe (Google Fonts).
+ *
+ * Chargée en CSS (@font-face) plutôt qu'avec delayRender : un onglet de rendu
+ * rechargé en cours de route restait bloqué sur l'attente de la police. Les
+ * sous-titres n'apparaissent qu'après le délai de la voix, la police est
+ * chargée bien avant.
+ */
+import "@fontsource/montserrat/700.css";
+import "@fontsource/montserrat/800.css";
+import "@fontsource/montserrat/900.css";
+
+export const CAPTION_FONT = "Montserrat, 'Arial Black', Arial, sans-serif";

docker-compose.yml

@@ -52,6 +52,11 @@ services:
       # Configuration FFmpeg Service
       FFMPEG_API_URL: http://ffmpeg-api:8000
       FFMPEG_API_KEY: ${FFMPEG_API_KEY:-socialflow-secret-ffmpeg-key}
+      # Rendu des Reels vidéo : remotion (sous-titres animés, identique à
+      # l'aperçu) ou ffmpeg (plus rapide, sous-titres classiques)
+      REEL_RENDERER: ${REEL_RENDERER:-remotion}
+      # Onglets Chromium en parallèle pour Remotion (défaut : moitié des cœurs)
+      RENDER_CONCURRENCY: ${RENDER_CONCURRENCY:-}
     networks:
       - internal
       - nginx_default

ffmpeg-service/app/api.py

@@ -74,6 +74,9 @@ class ReelRequest(BaseModel):
     draw_text: bool = True
     stabilize: bool = False
     enable_ending_effect: bool = True
+    # Préparation Remotion : le logo est composé par Remotion, mais sa présence
+    # allonge la vidéo pour laisser place à l'effet de fin.
+    has_logo: bool = False
     # Champs d'anciennes versions, acceptés et ignorés
     music_id: str | None = None
     word_duration: float | None = None
@@ -115,13 +118,23 @@ async def preview_tts(request: TtsRequest):
 
 @app.post("/process-reel", dependencies=[Depends(require_key)])
 async def process_reel(request: ReelRequest):
-    """Produit le Reel ; le MP4 se récupère ensuite via GET /files/{job_id}/output.mp4."""
+    """Rendu complet par FFmpeg ; le MP4 se récupère via GET /files/{job_id}/output.mp4."""
+    return await _guarded(_process, request)
+
+
+@app.post("/prepare-reel", dependencies=[Depends(require_key)])
+async def prepare_reel(request: ReelRequest):
+    """Prépare un rendu Remotion : image recadrée à la durée finale, piste son
+    finale et minutage des mots. Rien n'est incrusté dans l'image."""
+    return await _guarded(_prepare, request)
+
+
+async def _guarded(handler, request: ReelRequest) -> dict:
     job_id, workdir = jobs.new_job()
-    stats: dict[str, float] = {}
     started = time.monotonic()
     try:
         async with render_slot:
-            return await _process(request, job_id, workdir, stats, started)
+            return await handler(request, job_id, workdir, started)
     except HTTPException:
         jobs.remove_job(job_id)
         raise
@@ -140,7 +153,8 @@ async def get_file(job_id: str, name: str):
     path = jobs.job_file(job_id, name)
     if not path:
         raise HTTPException(status_code=404, detail="Fichier introuvable ou expiré")
-    return FileResponse(path, media_type="video/mp4" if name.endswith(".mp4") else None)
+    media_type = {"mp4": "video/mp4", "wav": "audio/wav"}.get(name.rsplit(".", 1)[-1])
+    return FileResponse(path, media_type=media_type)
 
 
 @app.delete("/jobs/{job_id}", dependencies=[Depends(require_key)])
@@ -185,8 +199,23 @@ async def _download(url: str, target: Path, what: str, required: bool) -> bool:
         return False
 
 
-async def _process(request: ReelRequest, job_id: str, workdir: Path, stats: dict, started: float) -> dict:
-    step = time.monotonic()
+class Stopwatch:
+    def __init__(self, started: float):
+        self.started = started
+        self.last = time.monotonic()
+        self.stats: dict[str, float] = {}
+
+    def lap(self, name: str) -> None:
+        now = time.monotonic()
+        self.stats[name] = round(now - self.last, 2)
+        self.last = now
+
+    def summary(self) -> dict[str, float]:
+        return {**self.stats, "total": round(time.monotonic() - self.started, 2)}
+
+
+async def _gather(request: ReelRequest, workdir: Path, clock: Stopwatch, *, fetch_logo: bool):
+    """Téléchargements, analyse, voix et stabilisation : communs aux deux modes."""
     video = workdir / "input.mp4"
     if request.video_base64:
         video.write_bytes(base64.b64decode(request.video_base64))
@@ -200,21 +229,21 @@ async def _process(request: ReelRequest, job_id: str, workdir: Path, stats: dict
         request.music_url, music, "la musique", required=False
     )
     watermark = workdir / "watermark.png"
-    has_watermark = bool(request.watermark_url) and await _download(
-        request.watermark_url, watermark, "le logo", required=False
+    has_watermark = (
+        fetch_logo
+        and bool(request.watermark_url)
+        and await _download(request.watermark_url, watermark, "le logo", required=False)
     )
     info = await proc.probe(video)
     if info.duration <= 0:
         raise HTTPException(status_code=400, detail="Vidéo illisible (durée nulle)")
-    stats["download"] = time.monotonic() - step
+    clock.lap("download")
 
-    # --- Voix ---
-    step = time.monotonic()
     track = None
     spoken_text = clean_text(request.text)
     if request.tts_enabled and spoken_text:
         track = await _synthesize(spoken_text, request.text, request, workdir)
-    stats["tts"] = time.monotonic() - step
+    clock.lap("tts")
 
     plan = render.RenderPlan(
         video=video,
@@ -226,30 +255,11 @@ async def _process(request: ReelRequest, job_id: str, workdir: Path, stats: dict
         voice=track.path if track else None,
         voice_duration=track.duration if track else 0.0,
         watermark=watermark if has_watermark else None,
+        outro_expected=not fetch_logo and request.has_logo,
         ending_effect=request.enable_ending_effect,
         keep_original_audio=info.has_audio,
     )
 
-    # --- Sous-titres ---
-    step = time.monotonic()
-    font_size = max(48, round(request.font_size * 1.4))
-    display = clean_text(request.text)
-    if request.draw_text and display:
-        captions = workdir / "captions.ass"
-        if track:
-            subtitles.write_captions(track.words, captions, offset=plan.voice_delay, font_size=font_size)
-        else:
-            words = await _caption_words_without_voice(display, video, info, plan)
-            subtitles.write_captions(words, captions, offset=0.0, font_size=font_size)
-        plan.captions = captions
-    if request.store_name and request.enable_ending_effect and has_watermark:
-        outro = workdir / "outro.ass"
-        subtitles.write_outro(request.store_name, outro, plan.logo_start, plan.total_duration)
-        plan.outro = outro
-    stats["subtitles"] = time.monotonic() - step
-
-    # --- Stabilisation (1re passe) ---
-    step = time.monotonic()
     if request.stabilize:
         transforms = workdir / "transforms.trf"
         try:
@@ -257,36 +267,95 @@ async def _process(request: ReelRequest, job_id: str, workdir: Path, stats: dict
             plan.stabilize_transforms = transforms
         except proc.CommandError as error:
             log.warning("Stabilisation ignorée : %s", error)
-    stats["stabilize"] = time.monotonic() - step
+    clock.lap("stabilize")
+    return plan, track, info
 
-    # --- Encodage ---
-    step = time.monotonic()
-    await proc.run(render.build_command(plan), timeout=1200)
-    stats["encode"] = time.monotonic() - step
-    stats["total"] = time.monotonic() - started
 
-    duration = (await proc.probe(plan.output)).duration
-    log.info(
-        "Rendu %s terminé : %.1f s de vidéo, étapes %s",
-        job_id,
-        duration,
-        {k: round(v, 1) for k, v in stats.items()},
-    )
+async def _caption_words(request: ReelRequest, plan: render.RenderPlan, track, info) -> list[align.Word]:
+    """Mots à afficher, en secondes depuis le début de la vidéo."""
+    display = clean_text(request.text)
+    if not request.draw_text or not display:
+        return []
+    if track:
+        return [align.Word(w.text, w.start + plan.voice_delay, w.end + plan.voice_delay) for w in track.words]
+    return await _caption_words_without_voice(display, plan.video, info, plan)
 
-    # Seul le résultat est conservé jusqu'au téléchargement
+
+def _keep_only(workdir: Path, keep: set[Path]) -> None:
+    """Seuls les fichiers à télécharger restent jusqu'à la récupération."""
     for entry in workdir.iterdir():
-        if entry != plan.output:
+        if entry not in keep:
             entry.unlink(missing_ok=True)
 
+
+def _voice_info(track) -> dict:
+    return {
+        "tts_engine": track.engine if track else None,
+        "tts_voice": track.voice if track else None,
+        "warnings": track.warnings if track else [],
+    }
+
+
+async def _process(request: ReelRequest, job_id: str, workdir: Path, started: float) -> dict:
+    clock = Stopwatch(started)
+    plan, track, info = await _gather(request, workdir, clock, fetch_logo=True)
+
+    words = await _caption_words(request, plan, track, info)
+    if words:
+        captions = workdir / "captions.ass"
+        font_size = max(48, round(request.font_size * 1.4))
+        subtitles.write_captions(words, captions, offset=0.0, font_size=font_size)
+        plan.captions = captions
+    if request.store_name and plan.has_outro and plan.watermark:
+        outro = workdir / "outro.ass"
+        subtitles.write_outro(request.store_name, outro, plan.logo_start, plan.total_duration)
+        plan.outro = outro
+    clock.lap("subtitles")
+
+    await proc.run(render.build_command(plan), timeout=1200)
+    clock.lap("encode")
+    duration = (await proc.probe(plan.output)).duration
+    log.info("Rendu %s terminé : %.1f s de vidéo, étapes %s", job_id, duration, clock.summary())
+
+    _keep_only(workdir, {plan.output})
     return {
         "success": True,
         "job_id": job_id,
         "output_path": f"/files/{job_id}/output.mp4",
         "duration": duration,
-        "tts_engine": track.engine if track else None,
-        "tts_voice": track.voice if track else None,
-        "warnings": track.warnings if track else [],
-        "processing_stats": stats,
+        **_voice_info(track),
+        "processing_stats": clock.summary(),
+    }
+
+
+async def _prepare(request: ReelRequest, job_id: str, workdir: Path, started: float) -> dict:
+    clock = Stopwatch(started)
+    plan, track, info = await _gather(request, workdir, clock, fetch_logo=False)
+    words = await _caption_words(request, plan, track, info)
+    clock.lap("subtitles")
+
+    video_out = workdir / "video.mp4"
+    audio_out = workdir / "audio.wav"
+    await proc.run(render.build_prepared_video_command(plan, video_out), timeout=1200)
+    clock.lap("video")
+    mix = render.build_audio_mix_command(plan, audio_out)
+    if mix:
+        await proc.run(mix, timeout=600)
+    clock.lap("audio")
+    log.info("Préparation %s terminée : %.1f s, étapes %s", job_id, plan.total_duration, clock.summary())
+
+    _keep_only(workdir, {video_out, audio_out})
+    return {
+        "success": True,
+        "job_id": job_id,
+        "video_path": f"/files/{job_id}/video.mp4",
+        "audio_path": f"/files/{job_id}/audio.wav" if mix else None,
+        "total_duration": plan.total_duration,
+        "video_duration": info.duration,
+        "logo_start": plan.logo_start if plan.has_outro else None,
+        "words": [w.to_dict() for w in words],
+        **_voice_info(track),
+        "processing_stats": clock.summary(),
     }
 
 
@@ -300,5 +369,5 @@ async def _caption_words_without_voice(display: str, video: Path, info, plan: re
                 return align.align_words(display, spoken, info.duration)
         except Exception as error:  # noqa: BLE001 — on retombe sur la répartition
             log.warning("Transcription de la vidéo impossible : %s", error)
-    end = plan.logo_start if plan.ending_effect and plan.watermark else plan.total_duration
+    end = plan.logo_start if plan.has_outro else plan.total_duration
     return align.align_words(display, [], max(1.0, end - 0.5))

ffmpeg-service/app/render.py

@@ -1,4 +1,11 @@
-"""Construction de la commande FFmpeg d'un Reel (fonction pure, testable)."""
+"""Construction des commandes FFmpeg d'un Reel (fonctions pures, testables).
+
+Deux usages :
+- rendu complet par FFmpeg (sous-titres ASS incrustés) : `build_command` ;
+- préparation pour Remotion, qui compose ensuite les sous-titres animés, le
+  logo et l'effet de fin : `build_prepared_video_command` (image seule, déjà
+  recadrée et allongée) et `build_audio_mix_command` (piste son finale).
+"""
 
 from dataclasses import dataclass
 from pathlib import Path
@@ -19,6 +26,8 @@ TONEMAP = (
     "tonemap=tonemap=hable:desat=0,zscale=t=bt709:m=bt709:r=tv,format=yuv420p"
 )
 
+COLOR_TAGS = ["-color_primaries", "bt709", "-color_trc", "bt709", "-colorspace", "bt709"]
+
 
 @dataclass
 class RenderPlan:
@@ -35,9 +44,15 @@ class RenderPlan:
     captions: Path | None = None
     watermark: Path | None = None
     outro: Path | None = None  # nom du magasin (effet de fin)
+    # Effet de fin prévu sans que le logo passe par FFmpeg (rendu Remotion)
+    outro_expected: bool = False
     ending_effect: bool = True
     keep_original_audio: bool = False
 
+    @property
+    def has_outro(self) -> bool:
+        return self.ending_effect and (self.watermark is not None or self.outro_expected)
+
     @property
     def speech_end(self) -> float:
         return self.voice_delay + self.voice_duration if self.voice else 0.0
@@ -48,42 +63,26 @@ class RenderPlan:
         duration = self.video_duration
         if self.voice:
             duration = max(duration, self.speech_end + VOICE_TAIL)
-            if self.ending_effect and self.watermark:
+            if self.has_outro:
                 duration = max(duration, self.speech_end + OUTRO_MIN)
         return round(duration, 3)
 
     @property
     def logo_start(self) -> float:
         """Le grand logo n'arrive qu'une fois la voix terminée."""
-        return max(0.0, self.total_duration - LOGO_SECONDS, self.speech_end)
+        return round(max(0.0, self.total_duration - LOGO_SECONDS, self.speech_end), 3)
+
+    @property
+    def fade_start(self) -> float:
+        return max(0.0, self.total_duration - FADE_SECONDS)
 
     @property
     def freeze_duration(self) -> float:
         return max(0.0, self.total_duration - self.video_duration)
 
 
-def build_command(plan: RenderPlan) -> list[str]:
-    total = plan.total_duration
-    logo_start = plan.logo_start
-    fade_start = max(0.0, total - FADE_SECONDS)
-
-    cmd = ["ffmpeg", "-y", "-hide_banner", "-loglevel", "error", "-i", str(plan.video)]
-    index = 1
-    music_idx = voice_idx = wm_idx = None
-    if plan.music:
-        # Musique bouclée : une piste plus courte que la vidéo ne coupe plus le son
-        cmd += ["-stream_loop", "-1", "-i", str(plan.music)]
-        music_idx, index = index, index + 1
-    if plan.voice:
-        cmd += ["-i", str(plan.voice)]
-        voice_idx, index = index, index + 1
-    if plan.watermark:
-        cmd += ["-i", str(plan.watermark)]
-        wm_idx, index = index, index + 1
-
-    graph: list[str] = []
-
-    # --- Vidéo ---
+def video_filters(plan: RenderPlan) -> list[str]:
+    """Stabilisation, HDR, recadrage 9:16, cadence fixe, dernière image figée."""
     chain = []
     if plan.stabilize_transforms:
         chain.append(
@@ -98,35 +97,15 @@ def build_command(plan: RenderPlan) -> list[str]:
     )
     if plan.freeze_duration > 0:
         chain.append(f"tpad=stop_mode=clone:stop_duration={plan.freeze_duration:.3f}")
-    if plan.captions:
-        chain.append(f"subtitles='{filter_path(plan.captions)}'")
-    graph.append(f"[0:v]{','.join(chain)}[vbase]")
+    return chain
 
-    current = "vbase"
-    if wm_idx is not None:
-        corner = "W-w-30:H-h-30"
-        if plan.outro and plan.ending_effect:
-            graph.append(f"[{wm_idx}:v]scale=200:-1,split=2[wm_small][wm_big0]")
-            graph.append("[wm_big0]scale=-1:300[wm_big]")
-            graph.append(f"[{current}][wm_small]overlay={corner}:enable='lt(t,{logo_start:.3f})'[vwm1]")
-            graph.append(f"[vwm1][wm_big]overlay=(W-w)/2:(H-h)/2-100:enable='gte(t,{logo_start:.3f})'[vwm2]")
-            current = "vwm2"
-        else:
-            graph.append(f"[{wm_idx}:v]scale=200:-1[wm_small]")
-            graph.append(f"[{current}][wm_small]overlay={corner}[vwm1]")
-            current = "vwm1"
-    if plan.outro and plan.ending_effect:
-        graph.append(f"[{current}]subtitles='{filter_path(plan.outro)}'[vout0]")
-        current = "vout0"
 
-    tail = []
-    if plan.ending_effect:
-        tail.append(f"fade=t=out:st={fade_start:.3f}:d={FADE_SECONDS}")
-    tail.append("format=yuv420p")
-    graph.append(f"[{current}]{','.join(tail)}[vout]")
-
-    # --- Audio ---
-    mix = None
+def audio_graph(
+    plan: RenderPlan, music_idx: int | None, voice_idx: int | None
+) -> tuple[list[str], str | None]:
+    """Graphe audio : voix décalée, musique bouclée et baissée sous la voix,
+    niveau final ~ -14 LUFS. Renvoie les filtres et l'étiquette de sortie."""
+    graph: list[str] = []
     if voice_idx is not None:
         delay_ms = int(plan.voice_delay * 1000)
         graph.append(f"[{voice_idx}:a]aresample=48000,adelay={delay_ms}:all=1,apad[voice]")
@@ -143,75 +122,135 @@ def build_command(plan: RenderPlan) -> list[str]:
         mix = "voice"
     elif music_idx is not None:
         mix = "music"
+    else:
+        return graph, None
 
-    audio_map: list[str] = []
-    if mix:
-        # Niveau final recommandé par les réseaux sociaux (~ -14 LUFS)
-        audio_tail = ["loudnorm=I=-14:TP=-1.5:LRA=11", "aresample=48000"]
+    tail = ["loudnorm=I=-14:TP=-1.5:LRA=11", "aresample=48000"]
     if plan.ending_effect:
-            audio_tail.append(f"afade=t=out:st={fade_start:.3f}:d={FADE_SECONDS}")
-        graph.append(f"[{mix}]{','.join(audio_tail)}[aout]")
-        audio_map = ["-map", "[aout]"]
+        tail.append(f"afade=t=out:st={plan.fade_start:.3f}:d={FADE_SECONDS}")
+    graph.append(f"[{mix}]{','.join(tail)}[aout]")
+    return graph, "aout"
+
+
+def _audio_inputs(plan: RenderPlan, first_index: int) -> tuple[list[str], int | None, int | None, int]:
+    args: list[str] = []
+    index = first_index
+    music_idx = voice_idx = None
+    if plan.music:
+        # Musique bouclée : une piste plus courte que la vidéo ne coupe plus le son
+        args += ["-stream_loop", "-1", "-i", str(plan.music)]
+        music_idx, index = index, index + 1
+    if plan.voice:
+        args += ["-i", str(plan.voice)]
+        voice_idx, index = index, index + 1
+    return args, music_idx, voice_idx, index
+
+
+def _video_encoding(crf: int, preset: str) -> list[str]:
+    return [
+        "-c:v", "libx264", "-preset", preset, "-crf", str(crf),
+        "-maxrate", "10M", "-bufsize", "20M",
+        "-profile:v", "high", "-level", "4.2",
+        "-g", str(config.FPS * 2), "-keyint_min", str(config.FPS),
+        "-pix_fmt", "yuv420p", *COLOR_TAGS,
+    ]  # fmt: skip
+
+
+def build_command(plan: RenderPlan) -> list[str]:
+    """Rendu complet par FFmpeg, sous-titres ASS incrustés."""
+    total = plan.total_duration
+    cmd = ["ffmpeg", "-y", "-hide_banner", "-loglevel", "error", "-i", str(plan.video)]
+    audio_args, music_idx, voice_idx, index = _audio_inputs(plan, 1)
+    cmd += audio_args
+    wm_idx = None
+    if plan.watermark:
+        cmd += ["-i", str(plan.watermark)]
+        wm_idx = index
+
+    chain = video_filters(plan)
+    if plan.captions:
+        chain.append(f"subtitles='{filter_path(plan.captions)}'")
+    graph = [f"[0:v]{','.join(chain)}[vbase]"]
+
+    current = "vbase"
+    if wm_idx is not None:
+        corner = "W-w-30:H-h-30"
+        if plan.outro and plan.ending_effect:
+            logo_start = plan.logo_start
+            graph.append(f"[{wm_idx}:v]scale=200:-1,split=2[wm_small][wm_big0]")
+            graph.append("[wm_big0]scale=-1:300[wm_big]")
+            graph.append(f"[{current}][wm_small]overlay={corner}:enable='lt(t,{logo_start:.3f})'[vwm1]")
+            graph.append(f"[vwm1][wm_big]overlay=(W-w)/2:(H-h)/2-100:enable='gte(t,{logo_start:.3f})'[vwm2]")
+            current = "vwm2"
+        else:
+            graph.append(f"[{wm_idx}:v]scale=200:-1[wm_small]")
+            graph.append(f"[{current}][wm_small]overlay={corner}[vwm1]")
+            current = "vwm1"
+    if plan.outro and plan.ending_effect:
+        graph.append(f"[{current}]subtitles='{filter_path(plan.outro)}'[vout0]")
+        current = "vout0"
+
+    tail = []
+    if plan.ending_effect:
+        tail.append(f"fade=t=out:st={plan.fade_start:.3f}:d={FADE_SECONDS}")
+    tail.append("format=yuv420p")
+    graph.append(f"[{current}]{','.join(tail)}[vout]")
+
+    audio_filters, audio_out = audio_graph(plan, music_idx, voice_idx)
+    graph += audio_filters
+    if audio_out:
+        audio_map = ["-map", f"[{audio_out}]"]
     elif plan.keep_original_audio:
         audio_map = ["-map", "0:a:0"]
+    else:
+        audio_map = []
 
     cmd += ["-filter_complex", ";".join(graph), "-map", "[vout]", *audio_map]
-    cmd += [
-        "-t",
-        f"{total:.3f}",
-        "-c:v",
-        "libx264",
-        "-preset",
-        "medium",
-        "-crf",
-        "19",
-        "-maxrate",
-        "10M",
-        "-bufsize",
-        "20M",
-        "-profile:v",
-        "high",
-        "-level",
-        "4.2",
-        "-g",
-        str(config.FPS * 2),
-        "-keyint_min",
-        str(config.FPS),
-        "-pix_fmt",
-        "yuv420p",
-        "-color_primaries",
-        "bt709",
-        "-color_trc",
-        "bt709",
-        "-colorspace",
-        "bt709",
-        "-c:a",
-        "aac",
-        "-b:a",
-        "192k",
-        "-ar",
-        "48000",
-        "-ac",
-        "2",
-        "-movflags",
-        "+faststart",
-        str(plan.output),
-    ]
+    cmd += ["-t", f"{total:.3f}", *_video_encoding(19, "medium")]
+    cmd += ["-c:a", "aac", "-b:a", "192k", "-ar", "48000", "-ac", "2", "-movflags", "+faststart"]
+    cmd.append(str(plan.output))
     return cmd
 
 
+def build_prepared_video_command(plan: RenderPlan, output: Path) -> list[str]:
+    """Image seule, prête pour Remotion : recadrée, en cadence fixe, à la durée finale.
+    Qualité élevée (CRF 16) : elle sera réencodée une fois par Remotion."""
+    chain = [*video_filters(plan), "format=yuv420p"]
+    return [
+        "ffmpeg", "-y", "-hide_banner", "-loglevel", "error", "-i", str(plan.video),
+        "-vf", ",".join(chain), "-an", "-t", f"{plan.total_duration:.3f}",
+        *_video_encoding(16, "veryfast"), "-movflags", "+faststart", str(output),
+    ]  # fmt: skip
+
+
+def build_audio_mix_command(plan: RenderPlan, output: Path) -> list[str] | None:
+    """Piste son finale (WAV 48 kHz stéréo), ou None s'il n'y a aucun son à produire."""
+    total = f"{plan.total_duration:.3f}"
+    if not plan.music and not plan.voice:
+        if not plan.keep_original_audio:
+            return None
+        # Son d'origine seul : même niveau final que les autres Reels
+        chain = ["aresample=48000", "loudnorm=I=-14:TP=-1.5:LRA=11", "apad"]
+        if plan.ending_effect:
+            chain.append(f"afade=t=out:st={plan.fade_start:.3f}:d={FADE_SECONDS}")
+        return [
+            "ffmpeg", "-y", "-hide_banner", "-loglevel", "error", "-i", str(plan.video),
+            "-map", "0:a:0", "-af", ",".join(chain), "-t", total,
+            "-ar", "48000", "-ac", "2", "-c:a", "pcm_s16le", str(output),
+        ]  # fmt: skip
+
+    audio_args, music_idx, voice_idx, _ = _audio_inputs(plan, 0)
+    graph, audio_out = audio_graph(plan, music_idx, voice_idx)
+    return [
+        "ffmpeg", "-y", "-hide_banner", "-loglevel", "error", *audio_args,
+        "-filter_complex", ";".join(graph), "-map", f"[{audio_out}]", "-t", total,
+        "-ar", "48000", "-ac", "2", "-c:a", "pcm_s16le", str(output),
+    ]  # fmt: skip
+
+
 def stabilize_detect_command(video: Path, transforms: Path) -> list[str]:
     return [
-        "ffmpeg",
-        "-y",
-        "-hide_banner",
-        "-loglevel",
-        "error",
-        "-i",
-        str(video),
-        "-vf",
-        f"vidstabdetect=stepsize=32:shakiness=8:accuracy=15:result={filter_path(transforms)}",
-        "-f",
-        "null",
-        "-",
-    ]
+        "ffmpeg", "-y", "-hide_banner", "-loglevel", "error", "-i", str(video),
+        "-vf", f"vidstabdetect=stepsize=32:shakiness=8:accuracy=15:result={filter_path(transforms)}",
+        "-f", "null", "-",
+    ]  # fmt: skip

ffmpeg-service/tests/test_render.py

@@ -75,3 +75,29 @@ def test_big_logo_waits_for_the_end_of_the_voice():
     assert plan.logo_start == 6.8
     assert plan.total_duration == 9.3
     assert "gte(t,6.800)" in _graph(build_command(plan))
+
+
+def test_prepared_video_has_no_audio_and_final_duration():
+    from app.render import build_prepared_video_command
+
+    plan = RenderPlan(
+        video=Path("in.mp4"),
+        video_duration=6.0,
+        output=Path("out.mp4"),
+        voice=Path("v.wav"),
+        voice_duration=5.0,
+        outro_expected=True,
+    )
+    cmd = build_prepared_video_command(plan, Path("video.mp4"))
+    assert "-an" in cmd
+    assert cmd[cmd.index("-t") + 1] == "9.500"  # 2 s + 5 s de voix + 2,5 s d'effet de fin
+    assert plan.logo_start == 7.0
+
+
+def test_audio_mix_absent_without_any_sound():
+    from app.render import build_audio_mix_command
+
+    plan = RenderPlan(video=Path("in.mp4"), video_duration=6.0, output=Path("out.mp4"))
+    assert build_audio_mix_command(plan, Path("a.wav")) is None
+    plan.keep_original_audio = True
+    assert "loudnorm=I=-14" in " ".join(build_audio_mix_command(plan, Path("a.wav")))

package-lock.json

@@ -13,6 +13,7 @@
         "@dnd-kit/core": "^6.3.1",
         "@dnd-kit/sortable": "^10.0.0",
         "@dnd-kit/utilities": "^3.2.2",
+        "@fontsource/montserrat": "^5.3.0",
         "@hookform/resolvers": "^3.10.0",
         "@jridgewell/trace-mapping": "^0.3.25",
         "@neondatabase/serverless": "^0.10.4",
@@ -128,7 +129,8 @@
         "tailwindcss": "^3.4.17",
         "tsx": "^4.20.5",
         "typescript": "5.6.3",
-        "vite": "^5.4.20"
+        "vite": "^5.4.20",
+        "vitest": "^3.2.7"
       },
       "optionalDependencies": {
         "bufferutil": "^4.0.8"
@@ -2303,6 +2305,15 @@
       "resolved": "https://registry.npmjs.org/@floating-ui/utils/-/utils-0.2.9.tgz",
       "integrity": "sha512-MDWhGtE+eHw5JW7lq4qhc5yRLS11ERl1c7Z6Xd0a58DozHES6EnNNwUWbMiG4J9Cgj053Bhk8zvlhFYKVhULwg=="
     },
+    "node_modules/@fontsource/montserrat": {
+      "version": "5.3.0",
+      "resolved": "https://registry.npmjs.org/@fontsource/montserrat/-/montserrat-5.3.0.tgz",
+      "integrity": "sha512-iQPDtZOnmM5ih4JBGaMSXisRap0ixb9bAUw2hDtY7EjVfaqiiNlKtVuJl9XclxUwtwMMHNcWXfQR6zI9x05+Tg==",
+      "license": "OFL-1.1",
+      "funding": {
+        "url": "https://github.com/sponsors/ayuhito"
+      }
+    },
     "node_modules/@hookform/resolvers": {
       "version": "3.10.0",
       "resolved": "https://registry.npmjs.org/@hookform/resolvers/-/resolvers-3.10.0.tgz",
@@ -6885,6 +6896,17 @@
         "@types/node": "*"
       }
     },
+    "node_modules/@types/chai": {
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/@types/chai/-/chai-5.2.3.tgz",
+      "integrity": "sha512-Mw558oeA9fFbv65/y4mHtXDs9bPnFMZAL/jxdPFUpOHHIXX91mcgEHbS5Lahr+pwZFR8A7GQleRWeI6cGFC2UA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/deep-eql": "*",
+        "assertion-error": "^2.0.1"
+      }
+    },
     "node_modules/@types/connect": {
       "version": "3.4.38",
       "resolved": "https://registry.npmjs.org/@types/connect/-/connect-3.4.38.tgz",
@@ -6969,6 +6991,13 @@
       "integrity": "sha512-Ps3T8E8dZDam6fUyNiMkekK3XUsaUEik+idO9/YjPtfj2qruF8tFBXS7XhtE4iIXBLxhmLjP3SXpLhVf21I9Lw==",
       "license": "MIT"
     },
+    "node_modules/@types/deep-eql": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/@types/deep-eql/-/deep-eql-4.0.2.tgz",
+      "integrity": "sha512-c9h9dVVMigMPc4bwTvC5dxqtqJZwQPePsWjPlpSOnojbor6pGqdk541lfA7AqFQr5pB1BRdq0juY9db81BwyFw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@types/dom-mediacapture-transform": {
       "version": "0.1.11",
       "resolved": "https://registry.npmjs.org/@types/dom-mediacapture-transform/-/dom-mediacapture-transform-0.1.11.tgz",
@@ -7242,6 +7271,94 @@
         "vite": "^4.2.0 || ^5.0.0 || ^6.0.0 || ^7.0.0"
       }
     },
+    "node_modules/@vitest/expect": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/@vitest/expect/-/expect-3.2.7.tgz",
+      "integrity": "sha512-E8eBXaKibuvH2pSZErOjdVb5vF4PbKYcrnluBTYxEk1l/VhhwZg1kZQsdtjq+CsF5CFydf2Rdkz7jDHKSisi3w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/chai": "^5.2.2",
+        "@vitest/spy": "3.2.7",
+        "@vitest/utils": "3.2.7",
+        "chai": "^5.2.0",
+        "tinyrainbow": "^2.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
+    "node_modules/@vitest/pretty-format": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/@vitest/pretty-format/-/pretty-format-3.2.7.tgz",
+      "integrity": "sha512-KUHlwqVu0sRlhCdyPdQ/wBoTfRahjUky1MubOmYw9fWfIZy1gNoHpuaaQBPAaMaVYdQYHJLurzj8ECCj5OwTqA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "tinyrainbow": "^2.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
+    "node_modules/@vitest/runner": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/@vitest/runner/-/runner-3.2.7.tgz",
+      "integrity": "sha512-sB9y4ovltoQP+WaUPwmSxO9WIg9Ig694Di5PalVPsYHklAdE027mehpWF2SQSVq+k6sFgaivbTjTJwZLSHbedA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@vitest/utils": "3.2.7",
+        "pathe": "^2.0.3",
+        "strip-literal": "^3.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
+    "node_modules/@vitest/snapshot": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/@vitest/snapshot/-/snapshot-3.2.7.tgz",
+      "integrity": "sha512-7C+MwShwtBSI5Buwoyg3s/iY1eHL9PKAf+O1wVh/TdnjXUtkoL/9YQtre90i4MtNXM6edP1wJ2zOBpfCyhIS7g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@vitest/pretty-format": "3.2.7",
+        "magic-string": "^0.30.17",
+        "pathe": "^2.0.3"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
+    "node_modules/@vitest/spy": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/@vitest/spy/-/spy-3.2.7.tgz",
+      "integrity": "sha512-Q2eQGI6d2L/hBtZ0qNuKcAGid68XK6cv1xsoaIma6PaJhHPoqcEJhYpXZ/5myCMqkNgtP6UKuBhbc0nHKnrkuQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "tinyspy": "^4.0.3"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
+    "node_modules/@vitest/utils": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/@vitest/utils/-/utils-3.2.7.tgz",
+      "integrity": "sha512-x6BDOd7dyo3PFLY3I9/HJ25X/6OurhGXk2/B9gOZNPF7XDVjeBK4k01lQE5uvDpbuheErh91qYuE1E2OEjK3Rw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@vitest/pretty-format": "3.2.7",
+        "loupe": "^3.1.4",
+        "tinyrainbow": "^2.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
     "node_modules/@webassemblyjs/ast": {
       "version": "1.14.1",
       "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.14.1.tgz",
@@ -7612,6 +7729,16 @@
       "integrity": "sha512-PCVAQswWemu6UdxsDFFX/+gVeYqKAod3D3UVm91jHwynguOwAvYPhx8nNlM++NqRcK6CxxpUafjmhIdKiHibqg==",
       "license": "MIT"
     },
+    "node_modules/assertion-error": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-2.0.1.tgz",
+      "integrity": "sha512-Izi8RQcffqCeNVgFigKli1ssklIbpHnCYc6AknXGYoB6grJqyeby7jv12JUQgmTAnIDnbck1uxksT4dzN3PWBA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      }
+    },
     "node_modules/ast-types": {
       "version": "0.16.1",
       "resolved": "https://registry.npmjs.org/ast-types/-/ast-types-0.16.1.tgz",
@@ -7887,6 +8014,16 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/cac": {
+      "version": "6.7.14",
+      "resolved": "https://registry.npmjs.org/cac/-/cac-6.7.14.tgz",
+      "integrity": "sha512-b6Ilus+c3RrdDk+JhLKUAQfzzgLEPy6wcXqS7f/xe1EETvsDP6GORG7SFuOs6cID5YkqchW/LXZbX5bc8j7ZcQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/call-bind": {
       "version": "1.0.7",
       "resolved": "https://registry.npmjs.org/call-bind/-/call-bind-1.0.7.tgz",
@@ -7963,6 +8100,33 @@
         "node": ">=6"
       }
     },
+    "node_modules/chai": {
+      "version": "5.3.3",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-5.3.3.tgz",
+      "integrity": "sha512-4zNhdJD/iOjSH0A05ea+Ke6MU5mmpQcbQsSOkgdaUMJ9zTlDTD/GYlwohmIE2u0gaxHYiVHEn1Fw9mZ/ktJWgw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "assertion-error": "^2.0.1",
+        "check-error": "^2.1.1",
+        "deep-eql": "^5.0.1",
+        "loupe": "^3.1.0",
+        "pathval": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/check-error": {
+      "version": "2.1.3",
+      "resolved": "https://registry.npmjs.org/check-error/-/check-error-2.1.3.tgz",
+      "integrity": "sha512-PAJdDJusoxnwm1VwW07VWwUN1sl7smmC3OKggvndJFadxxDRyFJBX/ggnu/KE4kQAB7a3Dp8f/YXC1FlUprWmA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 16"
+      }
+    },
     "node_modules/chokidar": {
       "version": "3.6.0",
       "resolved": "https://registry.npmjs.org/chokidar/-/chokidar-3.6.0.tgz",
@@ -8440,6 +8604,16 @@
         "node": ">=8"
       }
     },
+    "node_modules/deep-eql": {
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-5.0.2.tgz",
+      "integrity": "sha512-h5k/5U50IJJFpzfL6nO9jaaumfjO/f2NjK/oYB2Djzm4p9L+3T9qWpZqZ2hAbLPuuYq9wrU08WQyBTL5GbPk5Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/define-data-property": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/define-data-property/-/define-data-property-1.1.4.tgz",
@@ -8987,6 +9161,16 @@
         "node": ">=4.0"
       }
     },
+    "node_modules/estree-walker": {
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-3.0.3.tgz",
+      "integrity": "sha512-7RUKfXgSMMkzt6ZuXmqapOurLGPPfgj6l9uRZ7lRGolvk0y2yocc35LdcxKC5PQZdn2DMqioAQ2NoWcrTKmm6g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/estree": "^1.0.0"
+      }
+    },
     "node_modules/etag": {
       "version": "1.8.1",
       "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
@@ -9040,6 +9224,16 @@
       "integrity": "sha512-wnD2ZE+l+SPC/uoS0vXeE9L1+0wuaMqKlfz9AMUo38JsyLSBWSFcHR1Rri62LZc12vLr1gb3jl7iwQhgwpAbGQ==",
       "license": "ISC"
     },
+    "node_modules/expect-type": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/expect-type/-/expect-type-1.4.0.tgz",
+      "integrity": "sha512-KfYbmpRm0VbLjEvVa9yGwCi9GI34xvi7A/HXYWQO65CSD2u3MczUJSuwXKFIxlGsgBQizV9q5J9NHj4VG0n+pA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=12.0.0"
+      }
+    },
     "node_modules/express": {
       "version": "4.21.2",
       "resolved": "https://registry.npmjs.org/express/-/express-4.21.2.tgz",
@@ -10540,6 +10734,13 @@
         "loose-envify": "cli.js"
       }
     },
+    "node_modules/loupe": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/loupe/-/loupe-3.2.1.tgz",
+      "integrity": "sha512-CdzqowRJCeLU72bHvWqwRBBlLcMEtIvGrlvef74kMnV2AolS9Y8xUv1I0U/MNAWMhBlKIoyuEgoJ0t/bbwHbLQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/lru-cache": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-5.1.1.tgz",
@@ -11309,6 +11510,23 @@
       "integrity": "sha512-RA1GjUVMnvYFxuqovrEqZoxxW5NUZqbwKtYz/Tt7nXerk0LbLblQmrsgdeOxV5SFHf0UDggjS/bSeOZwt1pmEQ==",
       "license": "MIT"
     },
+    "node_modules/pathe": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/pathe/-/pathe-2.0.3.tgz",
+      "integrity": "sha512-WUjGcAqP1gQacoQe+OBJsFA7Ld4DyXuUIjZ5cc75cLHvJ7dtNsTugphxIADwspS+AraAUePCKrSVtPLFj/F88w==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/pathval": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-2.0.1.tgz",
+      "integrity": "sha512-//nshmD55c46FuFw26xV/xFAaB5HF9Xdap7HJBBnrKdAd6/GxDBaNA1870O79+9ueg61cZLSVc+OaFlfmObYVQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 14.16"
+      }
+    },
     "node_modules/pause": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/pause/-/pause-0.0.1.tgz",
@@ -12614,6 +12832,13 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/siginfo": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/siginfo/-/siginfo-2.0.0.tgz",
+      "integrity": "sha512-ybx0WO1/8bSBLEWXZvEd7gMW3Sn3JFlW3TvX1nREbDLRNQNaeNN8WK0meBwPdAaOI7TtRRRJn/Es1zhrrCHu7g==",
+      "dev": true,
+      "license": "ISC"
+    },
     "node_modules/signal-exit": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-4.1.0.tgz",
@@ -12700,6 +12925,13 @@
         "node": ">= 10.x"
       }
     },
+    "node_modules/stackback": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/stackback/-/stackback-0.0.2.tgz",
+      "integrity": "sha512-1XMJE5fQo1jGH6Y/7ebnwPOBEkIEnT4QF32d5R1+VXdXveM0IBMJt8zfaxX1P3QhVwrYe+576+jkANtSS2mBbw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/stackframe": {
       "version": "1.3.4",
       "resolved": "https://registry.npmjs.org/stackframe/-/stackframe-1.3.4.tgz",
@@ -12715,6 +12947,13 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/std-env": {
+      "version": "3.10.0",
+      "resolved": "https://registry.npmjs.org/std-env/-/std-env-3.10.0.tgz",
+      "integrity": "sha512-5GS12FdOZNliM5mAOxFRg7Ir0pWz8MdpYm6AY6VPkGpbA7ZzmbzNcBJQ0GPvvyWgcY7QAhCgf9Uy89I03faLkg==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/streamsearch": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/streamsearch/-/streamsearch-1.1.0.tgz",
@@ -12843,6 +13082,26 @@
         "node": ">=6"
       }
     },
+    "node_modules/strip-literal": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/strip-literal/-/strip-literal-3.1.0.tgz",
+      "integrity": "sha512-8r3mkIM/2+PpjHoOtiAW8Rg3jJLHaV7xPwG+YRGrv6FP0wwk/toTpATxWYOW0BKdWwl82VT2tFYi5DlROa0Mxg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "js-tokens": "^9.0.1"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/antfu"
+      }
+    },
+    "node_modules/strip-literal/node_modules/js-tokens": {
+      "version": "9.0.1",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-9.0.1.tgz",
+      "integrity": "sha512-mxa9E9ITFOt0ban3j6L5MpjwegGz6lBQmM1IJkWeBZGcMxto50+eWdjC/52xDbS2vy0k7vIMK0Fe2wfL9OQSpQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/strnum": {
       "version": "2.2.2",
       "resolved": "https://registry.npmjs.org/strnum/-/strnum-2.2.2.tgz",
@@ -13192,6 +13451,98 @@
       "integrity": "sha512-+FbBPE1o9QAYvviau/qC5SE3caw21q3xkvWKBtja5vgqOWIHHJ3ioaq1VPfn/Szqctz2bU/oYeKd9/z5BL+PVg==",
       "license": "MIT"
     },
+    "node_modules/tinybench": {
+      "version": "2.9.0",
+      "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
+      "integrity": "sha512-0+DUvqWMValLmha6lr4kD8iAMK1HzV0/aKnCtWb9v9641TnP/MFb7Pc2bxoxQjTXAErryXVgUOfv2YqNllqGeg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/tinyexec": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-0.3.2.tgz",
+      "integrity": "sha512-KQQR9yN7R5+OSwaK0XQoj22pwHoTlgYqmUscPYoknOoWCWfj/5/ABTMRi69FrKU5ffPVh5QcFikpWJI/P1ocHA==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/tinyglobby": {
+      "version": "0.2.17",
+      "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.17.tgz",
+      "integrity": "sha512-wXR/dYpcqKmfWpEdZjiKJOwCNFndD0DMnrW/cYjVGttEkBfVgcLFHoNrlj47mjOVic9yyNu65alsgF4NQyTa2g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "fdir": "^6.5.0",
+        "picomatch": "^4.0.4"
+      },
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/SuperchupuDev"
+      }
+    },
+    "node_modules/tinyglobby/node_modules/fdir": {
+      "version": "6.5.0",
+      "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
+      "integrity": "sha512-tIbYtZbucOs0BRGqPJkshJUYdL+SDH7dVM8gjy+ERp3WAUjLEFJE+02kanyHtwjWOnwrKYBiwAmM0p4kLJAnXg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12.0.0"
+      },
+      "peerDependencies": {
+        "picomatch": "^3 || ^4"
+      },
+      "peerDependenciesMeta": {
+        "picomatch": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/tinyglobby/node_modules/picomatch": {
+      "version": "4.0.7",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.7.tgz",
+      "integrity": "sha512-qcJu88Q2IWqJsDD529JKMdwGm/dvInW4HvQnRwiH9JtihJvzGOscDtHE3x1pBKeUOTysQ8kVmLnJ2kJu7yhcGA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
+    "node_modules/tinypool": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/tinypool/-/tinypool-1.1.1.tgz",
+      "integrity": "sha512-Zba82s87IFq9A9XmjiX5uZA/ARWDrB03OHlq+Vw1fSdt0I+4/Kutwy8BP4Y/y/aORMo61FQ0vIb5j44vSo5Pkg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^18.0.0 || >=20.0.0"
+      }
+    },
+    "node_modules/tinyrainbow": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/tinyrainbow/-/tinyrainbow-2.0.0.tgz",
+      "integrity": "sha512-op4nsTR47R6p0vMUUoYl/a+ljLFVtlfaXkLQmqfLR1qHma1h/ysYk4hEXZ880bf2CYgTskvTa/e196Vd5dDQXw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
+    "node_modules/tinyspy": {
+      "version": "4.0.6",
+      "resolved": "https://registry.npmjs.org/tinyspy/-/tinyspy-4.0.6.tgz",
+      "integrity": "sha512-u8KszXvGfU68hVcZpRHKG28T0krMuv2G5nDhiHaMLen/gIuFEgIJhaJuO69qjnXg5paSrbPMFfx3brNuN8eVSg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/to-regex-range": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
@@ -13592,6 +13943,36 @@
         }
       }
     },
+    "node_modules/vite-node": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/vite-node/-/vite-node-3.2.4.tgz",
+      "integrity": "sha512-EbKSKh+bh1E1IFxeO0pg1n4dvoOTt0UDiXMd/qn++r98+jPO1xtJilvXldeuQ8giIB5IkpjCgMleHMNEsGH6pg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "cac": "^6.7.14",
+        "debug": "^4.4.1",
+        "es-module-lexer": "^1.7.0",
+        "pathe": "^2.0.3",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0"
+      },
+      "bin": {
+        "vite-node": "vite-node.mjs"
+      },
+      "engines": {
+        "node": "^18.0.0 || ^20.0.0 || >=22.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
+    "node_modules/vite-node/node_modules/es-module-lexer": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/es-module-lexer/-/es-module-lexer-1.7.0.tgz",
+      "integrity": "sha512-jEQoCwk8hyb2AZziIOLhDqpm5+2ww5uIE6lkO/6jcOCusfk6LhMHpXXfBLXTZ7Ydyt0j4VoUQv6uGNYbdW+kBA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/vite/node_modules/@esbuild/aix-ppc64": {
       "version": "0.21.5",
       "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.21.5.tgz",
@@ -14022,6 +14403,119 @@
         "@esbuild/win32-x64": "0.21.5"
       }
     },
+    "node_modules/vitest": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-3.2.7.tgz",
+      "integrity": "sha512-KrxIJ62Fd89gfysR4WotlgZABiz2dqFPgqGzX7s+CwsqLFomRH7777ZcrOD6+WVAh7khPQP41A+BKbpcJFrdEg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/chai": "^5.2.2",
+        "@vitest/expect": "3.2.7",
+        "@vitest/mocker": "3.2.7",
+        "@vitest/pretty-format": "^3.2.7",
+        "@vitest/runner": "3.2.7",
+        "@vitest/snapshot": "3.2.7",
+        "@vitest/spy": "3.2.7",
+        "@vitest/utils": "3.2.7",
+        "chai": "^5.2.0",
+        "debug": "^4.4.1",
+        "expect-type": "^1.2.1",
+        "magic-string": "^0.30.17",
+        "pathe": "^2.0.3",
+        "picomatch": "^4.0.2",
+        "std-env": "^3.9.0",
+        "tinybench": "^2.9.0",
+        "tinyexec": "^0.3.2",
+        "tinyglobby": "^0.2.14",
+        "tinypool": "^1.1.1",
+        "tinyrainbow": "^2.0.0",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0",
+        "vite-node": "3.2.4",
+        "why-is-node-running": "^2.3.0"
+      },
+      "bin": {
+        "vitest": "vitest.mjs"
+      },
+      "engines": {
+        "node": "^18.0.0 || ^20.0.0 || >=22.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      },
+      "peerDependencies": {
+        "@edge-runtime/vm": "*",
+        "@types/debug": "^4.1.12",
+        "@types/node": "^18.0.0 || ^20.0.0 || >=22.0.0",
+        "@vitest/browser": "3.2.7",
+        "@vitest/ui": "3.2.7",
+        "happy-dom": "*",
+        "jsdom": "*"
+      },
+      "peerDependenciesMeta": {
+        "@edge-runtime/vm": {
+          "optional": true
+        },
+        "@types/debug": {
+          "optional": true
+        },
+        "@types/node": {
+          "optional": true
+        },
+        "@vitest/browser": {
+          "optional": true
+        },
+        "@vitest/ui": {
+          "optional": true
+        },
+        "happy-dom": {
+          "optional": true
+        },
+        "jsdom": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/vitest/node_modules/@vitest/mocker": {
+      "version": "3.2.7",
+      "resolved": "https://registry.npmjs.org/@vitest/mocker/-/mocker-3.2.7.tgz",
+      "integrity": "sha512-Trr0hYO9CM3Wj6ksWHRhK9IZpIY6wTMO5u/MqXurMxT57sWBaOPEtP3Oq60ihZuh5JsiagKfz95OcxdEP6dBrA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@vitest/spy": "3.2.7",
+        "estree-walker": "^3.0.3",
+        "magic-string": "^0.30.17"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      },
+      "peerDependencies": {
+        "msw": "^2.4.9",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0"
+      },
+      "peerDependenciesMeta": {
+        "msw": {
+          "optional": true
+        },
+        "vite": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/vitest/node_modules/picomatch": {
+      "version": "4.0.7",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.7.tgz",
+      "integrity": "sha512-qcJu88Q2IWqJsDD529JKMdwGm/dvInW4HvQnRwiH9JtihJvzGOscDtHE3x1pBKeUOTysQ8kVmLnJ2kJu7yhcGA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
     "node_modules/watchpack": {
       "version": "2.5.1",
       "resolved": "https://registry.npmjs.org/watchpack/-/watchpack-2.5.1.tgz",
@@ -14182,6 +14676,23 @@
         "node": ">= 8"
       }
     },
+    "node_modules/why-is-node-running": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/why-is-node-running/-/why-is-node-running-2.3.0.tgz",
+      "integrity": "sha512-hUrmaWBdVDcxvYqnyh09zunKzROWjbZTiNy8dBEjkS7ehEDQibXJ7XvlmtbwuTclUiIyN+CyXQD4Vmko8fNm8w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "siginfo": "^2.0.0",
+        "stackback": "0.0.2"
+      },
+      "bin": {
+        "why-is-node-running": "cli.js"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/wide-align": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.5.tgz",

package.json

@@ -8,13 +8,15 @@
     "build": "vite build && esbuild server/index.ts --platform=node --packages=external --bundle --format=esm --outdir=dist",
     "start": "NODE_ENV=production node dist/index.js",
     "check": "tsc",
-    "db:push": "drizzle-kit push"
+    "db:push": "drizzle-kit push",
+    "test": "vitest run"
   },
   "dependencies": {
     "@aws-sdk/client-s3": "^3.1016.0",
     "@dnd-kit/core": "^6.3.1",
     "@dnd-kit/sortable": "^10.0.0",
     "@dnd-kit/utilities": "^3.2.2",
+    "@fontsource/montserrat": "^5.3.0",
     "@hookform/resolvers": "^3.10.0",
     "@jridgewell/trace-mapping": "^0.3.25",
     "@neondatabase/serverless": "^0.10.4",
@@ -130,7 +132,8 @@
     "tailwindcss": "^3.4.17",
     "tsx": "^4.20.5",
     "typescript": "5.6.3",
-    "vite": "^5.4.20"
+    "vite": "^5.4.20",
+    "vitest": "^3.2.7"
   },
   "optionalDependencies": {
     "bufferutil": "^4.0.8"

scripts/prebundle-remotion.js

@@ -1,9 +0,0 @@
-#!/usr/bin/env node
-// Pre-bundle Remotion composition during Docker build.
-// This warms up the Webpack cache so the first user render is fast.
-const { bundle } = require('@remotion/bundler');
-const path = require('path');
-
-bundle({ entryPoint: path.resolve(__dirname, '../client/src/remotion/index.ts') })
-  .then(loc => console.log('✅ Remotion pre-bundle OK:', loc))
-  .catch(e  => { console.warn('⚠️ Remotion pre-bundle skipped:', e.message); process.exit(0); });

scripts/prebundle-remotion.mjs

@@ -0,0 +1,25 @@
+#!/usr/bin/env node
+// Pré-bundle des compositions Remotion pendant le build Docker : le cache
+// Webpack est chaud, le premier rendu d'un utilisateur démarre plus vite.
+// Même configuration que server/services/reels/remotionRenderer.ts.
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { bundle } from "@remotion/bundler";
+
+const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
+
+bundle({
+  entryPoint: path.join(root, "client/src/remotion/index.ts"),
+  webpackOverride: (config) => ({
+    ...config,
+    resolve: {
+      ...config.resolve,
+      alias: { ...(config.resolve?.alias ?? {}), "@shared": path.join(root, "shared") },
+    },
+  }),
+})
+  .then((location) => console.log("✅ Remotion pre-bundle OK:", location))
+  .catch((error) => {
+    console.warn("⚠️ Remotion pre-bundle skipped:", error.message);
+    process.exit(0);
+  });

server/routes/reels.ts

@@ -8,7 +8,8 @@ import { storage } from '../storage';
 import { ffmpegService, FFmpegServiceError } from '../services/ffmpeg';
 import { ttsPreviewSchema, videoReelParamsSchema, type VideoReelParams } from '@shared/reel';
 import { enqueueReelJob, countActiveReelJobs } from '../services/reels/queue';
-import { resolveGeminiApiKey, resolveStoreName } from '../services/reels/assets';
+import { resolveGeminiApiKey, resolveLogoPath, resolveStoreName } from '../services/reels/assets';
+import { configuredRenderer } from '../services/reels/videoPipeline';
 import { openRouterService, describeGenerationError } from '../services/openrouter';
 
 import { estimateVoiceTiming } from '../services/ttsSync';
@@ -378,12 +379,18 @@ reelsRouter.post('/reels', async (req: Request, res: Response) => {
  */
 reelsRouter.get('/reels/config', async (req: Request, res: Response) => {
     try {
-        const ffmpegConfigured = await ffmpegService.healthCheck().catch(() => false);
+        const [ffmpegConfigured, logoUrl] = await Promise.all([
+            ffmpegService.healthCheck().catch(() => false),
+            resolveLogoPath(),
+        ]);
 
         res.json({
             jamendo: { configured: false },
             freesound: { configured: false },
             ffmpeg: { configured: ffmpegConfigured },
+            // Aperçu : logo affiché par le lecteur, moteur de rendu utilisé
+            logoUrl: logoUrl ?? null,
+            renderer: configuredRenderer(),
         });
     } catch (error) {
         console.error('❌ Error fetching Reels config:', error);

server/routes/remotion.ts

@@ -74,6 +74,7 @@ remotionRouter.post("/render", upload.fields([{ name: "images", maxCount: 4 }, {
       ttsEngine: req.body.ttsEngine || undefined,
       ttsVoice: req.body.ttsVoice,
       ttsStyle: req.body.ttsStyle || undefined,
+      captionStyle: req.body.captionStyle || undefined,
       storeName: await resolveStoreName(user.id, req.body.selectedPageId),
       tempFiles: uploaded.map((f) => f.path),
     });

server/services/ffmpeg.ts

@@ -6,6 +6,10 @@
  * JSON, qui gonflait sa taille d'un tiers et la gardait entière en mémoire.
  */
 
+import fs from 'fs';
+import { Readable } from 'stream';
+import { pipeline } from 'stream/promises';
+import type { ReadableStream as WebReadableStream } from 'stream/web';
 import type { TtsEngine, TtsStyle } from '@shared/voices';
 
 /** Un rendu long (stabilisation + encodage) peut dépasser plusieurs minutes. */
@@ -39,6 +43,19 @@ export interface ReelRenderResult {
     warnings: string[];
 }
 
+/** Rendu préparé pour Remotion : fichiers déjà écrits sur le disque. */
+export interface PreparedReel {
+    videoPath: string;
+    audioPath: string | null;
+    totalDuration: number;
+    videoDuration: number;
+    logoStart: number | null;
+    words: TimedWord[];
+    ttsEngine?: string | null;
+    ttsVoice?: string | null;
+    warnings: string[];
+}
+
 export interface TimedWord {
     text: string;
     start: number;
@@ -164,6 +181,86 @@ export class FFmpegService {
         }
     }
 
+    /**
+     * Prépare un rendu Remotion : image recadrée à la durée finale et piste son
+     * finale, écrites dans `targetDir`, plus le minutage des mots.
+     */
+    async prepareReel(
+        videoUrl: string,
+        options: ReelRenderOptions & { hasLogo: boolean },
+        targetDir: string,
+    ): Promise<PreparedReel> {
+        const response = await this.call('/prepare-reel', {
+            method: 'POST',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify({
+                video_url: videoUrl,
+                text: options.text,
+                music_url: options.musicUrl,
+                tts_enabled: options.ttsEnabled ?? false,
+                tts_voice: options.ttsVoice,
+                tts_engine: options.ttsEngine,
+                tts_style: options.ttsStyle,
+                gemini_api_key: options.geminiApiKey,
+                music_volume: options.musicVolume ?? 0.25,
+                draw_text: options.drawText ?? true,
+                stabilize: options.stabilize ?? false,
+                store_name: options.storeName,
+                enable_ending_effect: options.enableEndingEffect ?? true,
+                has_logo: options.hasLogo,
+            }),
+            timeoutMs: PROCESS_TIMEOUT_MS,
+        });
+        const data = await response.json() as {
+            job_id: string;
+            video_path: string;
+            audio_path: string | null;
+            total_duration: number;
+            video_duration: number;
+            logo_start: number | null;
+            words: TimedWord[];
+            tts_engine?: string | null;
+            tts_voice?: string | null;
+            warnings?: string[];
+        };
+
+        try {
+            await fs.promises.mkdir(targetDir, { recursive: true });
+            const videoPath = `${targetDir}/video.mp4`;
+            await this.downloadTo(data.video_path, videoPath);
+            let audioPath: string | null = null;
+            if (data.audio_path) {
+                audioPath = `${targetDir}/audio.wav`;
+                await this.downloadTo(data.audio_path, audioPath);
+            }
+            for (const warning of data.warnings ?? []) console.warn(`⚠️ [FFmpeg] ${warning}`);
+            return {
+                videoPath,
+                audioPath,
+                totalDuration: data.total_duration,
+                videoDuration: data.video_duration,
+                logoStart: data.logo_start,
+                words: data.words ?? [],
+                ttsEngine: data.tts_engine,
+                ttsVoice: data.tts_voice,
+                warnings: data.warnings ?? [],
+            };
+        } finally {
+            this.call(`/jobs/${data.job_id}`, { method: 'DELETE', timeoutMs: HEALTH_TIMEOUT_MS })
+                .catch(() => { /* purgé plus tard par le service */ });
+        }
+    }
+
+    /** Télécharge un fichier du service en flux, sans le charger en mémoire. */
+    private async downloadTo(servicePath: string, target: string): Promise<void> {
+        const response = await this.call(servicePath, { method: 'GET', timeoutMs: DOWNLOAD_TIMEOUT_MS });
+        if (!response.body) throw new FFmpegServiceError(`Réponse vide pour ${servicePath}`);
+        await pipeline(
+            Readable.fromWeb(response.body as unknown as WebReadableStream<Uint8Array>),
+            fs.createWriteStream(target),
+        );
+    }
+
     async healthCheck(): Promise<boolean> {
         try {
             await this.call('/health', { method: 'GET', timeoutMs: HEALTH_TIMEOUT_MS });

server/services/reels/imagesPipeline.ts

@@ -6,113 +6,16 @@
 
 import fs from "fs";
 import path from "path";
-import { bundle } from "@remotion/bundler";
-import { renderMedia, selectComposition } from "@remotion/renderer";
+import { cleanCaptionText, computeImagesTiming } from "@shared/captions";
 import { imagesReelParamsSchema, type ImagesReelResult } from "@shared/reel";
-import { ffmpegService, type TimedWord } from "../ffmpeg";
+import { ffmpegService } from "../ffmpeg";
 import { generateVideoThumbnail } from "../thumbnail";
 import type { JobContext } from "./queue";
 import { resolveGeminiApiKey, resolveLogoPath } from "./assets";
+import { REMOTION_TEMP_DIR, localHttpUrl, tempFileUrl, toDataUrl } from "./remotionAssets";
+import { renderReelComposition } from "./remotionRenderer";
 
-export const REMOTION_TEMP_DIR = path.join(process.cwd(), "uploads", "temp");
-
-// Durées
-const FPS = 30;
-const ENDING_SECONDS = 3; // diapositive de fin (logo + nom du magasin)
-const MIN_CONTENT_SECONDS = 22; // total >= 25 s
-const MAX_CONTENT_SECONDS = 27; // total <= 30 s
-
-/** Bundle Remotion mis en cache : un seul bundle par processus. */
-let bundleCache: Promise<string> | null = null;
-
-function getBundle(): Promise<string> {
-  if (!bundleCache) {
-    // process.cwd() = /app dans Docker, racine du projet en dev
-    const entryPoint = path.resolve(process.cwd(), "client/src/remotion/index.ts");
-    console.log("📦 Bundling Remotion from:", entryPoint);
-    bundleCache = bundle({ entryPoint }).catch((error) => {
-      bundleCache = null; // réessayer au prochain rendu
-      throw error;
-    });
-  }
-  return bundleCache;
-}
-
-/** URL HTTP locale : l'audio est lu par Chromium, trop lourd pour une data URL. */
-function localHttpUrl(url: string): string {
-  if (!url.startsWith("/")) return url;
-  const port = process.env.PORT || "5555";
-  return `http://localhost:${port}${url}`;
-}
-
-const MIME_BY_EXT: Record<string, string> = {
-  png: "image/png",
-  gif: "image/gif",
-  webp: "image/webp",
-};
-
-/**
- * Convertit un chemin local /uploads/... en data URL : Chromium dans Docker ne
- * lit pas http://localhost de façon fiable, les images sont donc embarquées.
- */
-async function toDataUrl(relativeUrl: string): Promise<string> {
-  if (!relativeUrl.startsWith("/uploads/")) return relativeUrl;
-  const uploadsRoot = path.join(process.cwd(), "uploads") + path.sep;
-  const filePath = path.resolve(process.cwd(), "." + relativeUrl);
-  if (!filePath.startsWith(uploadsRoot)) {
-    throw new Error(`Chemin d'image refusé : ${relativeUrl}`);
-  }
-  try {
-    const buffer = await fs.promises.readFile(filePath);
-    const ext = path.extname(filePath).slice(1).toLowerCase();
-    const mime = MIME_BY_EXT[ext] ?? "image/jpeg";
-    return `data:${mime};base64,${buffer.toString("base64")}`;
-  } catch {
-    console.warn(`⚠️ toDataUrl: fichier introuvable : ${filePath}`);
-    return relativeUrl;
-  }
-}
-
-/**
- * Retire hashtags et emojis avant la synthèse vocale. Les lettres accentuées
- * font partie du hashtag (#AménagementExtérieur est retiré en entier).
- */
-export function stripForTTS(text: string): string {
-  return text
-    .replace(/#[\wÀ-ɏḀ-ỿ]*/g, " ")
-    .replace(/[\uD800-\uDFFF][\uDC00-\uDFFF]/g, " ") // paires de substitution (la plupart des emojis)
-    .replace(/[☀-➿]/g, " ") // symboles divers
-    .replace(/[⬀-⯿]/g, " ")
-    .replace(/\s+/g, " ")
-    .trim();
-}
-
-const EDGE_PUNCT = /^[.,!?;:…«»"'()\[\]]+|[.,!?;:…«»"'()\[\]]+$/g;
-
-export interface WordTiming {
-  word: string;
-  startFrame: number;
-  endFrame: number;
-}
-
-/**
- * Convertit le minutage réel des mots (en secondes, fourni par la voix) en
- * images. Chaque mot reste affiché jusqu'au début du suivant : pas de trou
- * pendant les respirations.
- */
-export function toWordTimings(words: TimedWord[], fps: number): WordTiming[] {
-  const timings = words
-    .map((w) => ({ word: w.text.replace(EDGE_PUNCT, "") || w.text, start: w.start, end: w.end }))
-    .filter((w) => w.word.trim());
-  return timings.map((w, i) => ({
-    word: w.word,
-    startFrame: Math.round(w.start * fps),
-    endFrame: Math.max(
-      Math.round(w.start * fps) + 1,
-      Math.round((i + 1 < timings.length ? timings[i + 1].start : w.end) * fps),
-    ),
-  }));
-}
+export { REMOTION_TEMP_DIR };
 
 export async function runImagesReelJob({ job, progress }: JobContext): Promise<ImagesReelResult> {
   const params = imagesReelParamsSchema.parse(job.params);
@@ -126,15 +29,15 @@ export async function runImagesReelJob({ job, progress }: JobContext): Promise<I
     const musicUrl = params.musicUrl ? localHttpUrl(params.musicUrl) : undefined;
     const { overlayText, storeName } = params;
 
-    // --- Voix ---
+    // --- Voix et minutage réel des mots ---
     let audioUrl: string | undefined;
-    let wordTimings: WordTiming[] | undefined;
+    let words: { text: string; start: number; end: number }[] = [];
     let audioDuration = 0;
 
-    const ttsText = overlayText ? stripForTTS(overlayText) : "";
-    if (params.ttsEnabled && overlayText && ttsText) {
+    const spokenText = overlayText ? cleanCaptionText(overlayText) : "";
+    if (params.ttsEnabled && spokenText) {
       await progress(15, "voice");
-      const voice = await ffmpegService.previewVoice(ttsText, {
+      const voice = await ffmpegService.previewVoice(spokenText, {
         voice: params.ttsVoice,
         engine: params.ttsEngine,
         style: params.ttsStyle,
@@ -142,52 +45,40 @@ export async function runImagesReelJob({ job, progress }: JobContext): Promise<I
       });
       for (const warning of voice.warnings) console.warn(`⚠️ [Reels] ${warning}`);
 
-      const audioFilename = `tts-${job.id}.mp3`;
-      const audioPath = path.join(REMOTION_TEMP_DIR, audioFilename);
+      const audioPath = path.join(REMOTION_TEMP_DIR, `tts-${job.id}.mp3`);
       await fs.promises.writeFile(audioPath, voice.audio);
       jobTempFiles.push(audioPath);
-      audioUrl = localHttpUrl(`/uploads/temp/${audioFilename}`);
+      audioUrl = tempFileUrl(audioPath);
       audioDuration = voice.duration;
-      wordTimings = toWordTimings(voice.words, FPS);
+      words = voice.words;
     }
 
-    // --- Durée : 25 à 30 s ---
-    const naturalContent = Math.max(audioDuration, images.length * 3);
-    const contentSeconds = Math.min(Math.max(naturalContent, MIN_CONTENT_SECONDS), MAX_CONTENT_SECONDS);
-    const endingFrames = logoUrl || storeName ? ENDING_SECONDS * FPS : 0;
-    const totalFrames = Math.round(contentSeconds * FPS) + endingFrames;
+    // --- Durée : 25 à 30 s (mêmes règles que l'aperçu) ---
+    const { total, endingSeconds } = computeImagesTiming({
+      imageCount: images.length,
+      voiceDuration: audioDuration,
+      hasEnding: Boolean(logoUrl || storeName),
+    });
 
     await progress(25, "render");
-    const serveUrl = await getBundle();
-    const inputProps = {
+    const outputLocation = path.join(REMOTION_TEMP_DIR, `out-${job.id}.mp4`);
+    let lastReported = 25;
+    await renderReelComposition({
+      compositionId: "ImageVideo",
+      outputLocation,
+      inputProps: {
         images,
-      overlayText,
+        totalDuration: total,
+        words,
+        captionStyle: params.captionStyle,
         audioUrl,
-      wordTimings,
         musicUrl,
         musicVolume: params.musicVolume,
         logoUrl,
         storeName,
-      endingFrames,
-    };
-    const composition = await selectComposition({ serveUrl, id: "ImageVideo", inputProps });
-
-    const outputFilename = `out-${job.id}.mp4`;
-    const outputLocation = path.join(REMOTION_TEMP_DIR, outputFilename);
-    let lastReported = 25;
-
-    await renderMedia({
-      composition: { ...composition, durationInFrames: totalFrames },
-      serveUrl,
-      codec: "h264",
-      outputLocation,
-      inputProps,
-      chromiumOptions: {
-        disableWebSecurity: true,
-        ignoreCertificateErrors: true,
+        endingSeconds,
       },
-      concurrency: 1, // évite d'épuiser la mémoire du conteneur
-      onProgress: ({ progress: ratio }) => {
+      onProgress: (ratio) => {
         const pct = 25 + Math.floor(ratio * 70);
         if (pct >= lastReported + 5) {
           lastReported = pct;
@@ -196,16 +87,12 @@ export async function runImagesReelJob({ job, progress }: JobContext): Promise<I
       },
     });
 
-    const thumbnailFilename = outputFilename.replace(".mp4", "-thumb.jpg");
-    const thumbnailOk = await generateVideoThumbnail(
-      outputLocation,
-      path.join(REMOTION_TEMP_DIR, thumbnailFilename),
-      2,
-    );
+    const thumbnailPath = outputLocation.replace(/\.mp4$/, "-thumb.jpg");
+    const thumbnailOk = await generateVideoThumbnail(outputLocation, thumbnailPath, 2);
 
     return {
-      url: `/uploads/temp/${outputFilename}`,
-      thumbnailUrl: thumbnailOk ? `/uploads/temp/${thumbnailFilename}` : null,
+      url: `/uploads/temp/${path.basename(outputLocation)}`,
+      thumbnailUrl: thumbnailOk ? `/uploads/temp/${path.basename(thumbnailPath)}` : null,
     };
   } finally {
     // Images, musique importée et voix ne servent plus une fois le rendu fini

server/services/reels/remotionAssets.test.ts

@@ -0,0 +1,12 @@
+import { describe, expect, it } from "vitest";
+import { toDataUrl } from "./remotionAssets";
+
+describe("toDataUrl", () => {
+  it("refuse un chemin qui sort du dossier uploads", async () => {
+    await expect(toDataUrl("/uploads/../../etc/passwd")).rejects.toThrow(/refusé/);
+  });
+
+  it("laisse les URL externes telles quelles", async () => {
+    await expect(toDataUrl("https://exemple.fr/logo.png")).resolves.toBe("https://exemple.fr/logo.png");
+  });
+});

server/services/reels/remotionAssets.ts

@@ -0,0 +1,58 @@
+/**
+ * Ressources fournies aux compositions Remotion pendant un rendu serveur.
+ */
+
+import fs from "fs";
+import path from "path";
+
+/** Dossier temporaire servi sous /uploads/temp (voir server/index.ts). */
+export const REMOTION_TEMP_DIR =
+  process.env.TEMP_UPLOAD_DIR || path.join(process.cwd(), "uploads", "temp");
+
+/**
+ * URL HTTP locale d'un fichier servi par l'application. Vidéo et audio sont
+ * lus côté Node par le moteur de rendu : l'adresse locale suffit.
+ */
+export function localHttpUrl(url: string): string {
+  if (!url.startsWith("/")) return url;
+  const port = process.env.PORT || "5555";
+  return `http://localhost:${port}${url}`;
+}
+
+/** URL servie d'un fichier du dossier temporaire. */
+export function tempFileUrl(absolutePath: string): string {
+  const relative = path.relative(REMOTION_TEMP_DIR, absolutePath).split(path.sep).join("/");
+  return localHttpUrl(`/uploads/temp/${relative}`);
+}
+
+const MIME_BY_EXT: Record<string, string> = {
+  png: "image/png",
+  gif: "image/gif",
+  webp: "image/webp",
+  svg: "image/svg+xml",
+};
+
+/**
+ * Convertit un chemin local /uploads/... en data URL : les images sont
+ * affichées par Chromium, qui ne lit pas http://localhost de façon fiable
+ * dans Docker. Refuse tout chemin sortant du dossier uploads.
+ */
+export async function toDataUrl(relativeUrl: string): Promise<string> {
+  if (!relativeUrl.startsWith("/uploads/")) return relativeUrl;
+  const uploadsRoot = path.join(process.cwd(), "uploads") + path.sep;
+  const tempRoot = path.resolve(REMOTION_TEMP_DIR) + path.sep;
+  const filePath = relativeUrl.startsWith("/uploads/temp/")
+    ? path.resolve(REMOTION_TEMP_DIR, "." + relativeUrl.slice("/uploads/temp".length))
+    : path.resolve(process.cwd(), "." + relativeUrl);
+  if (!filePath.startsWith(uploadsRoot) && !filePath.startsWith(tempRoot)) {
+    throw new Error(`Chemin d'image refusé : ${relativeUrl}`);
+  }
+  try {
+    const buffer = await fs.promises.readFile(filePath);
+    const ext = path.extname(filePath).slice(1).toLowerCase();
+    return `data:${MIME_BY_EXT[ext] ?? "image/jpeg"};base64,${buffer.toString("base64")}`;
+  } catch {
+    console.warn(`⚠️ [Remotion] Image introuvable : ${filePath}`);
+    return relativeUrl;
+  }
+}

server/services/reels/remotionRenderer.ts

@@ -0,0 +1,85 @@
+/**
+ * Rendu Remotion côté serveur, commun aux Reels vidéo et images : bundle mis
+ * en cache, réglages d'encodage des réseaux sociaux, progression.
+ */
+
+import os from "os";
+import path from "path";
+import { bundle } from "@remotion/bundler";
+import { renderMedia, selectComposition } from "@remotion/renderer";
+
+let bundleCache: Promise<string> | null = null;
+
+/** Bundle des compositions, construit une fois par processus. */
+export function getRemotionBundle(): Promise<string> {
+  if (!bundleCache) {
+    // process.cwd() = /app dans Docker, racine du projet en dev
+    const entryPoint = path.resolve(process.cwd(), "client/src/remotion/index.ts");
+    console.log("📦 [Remotion] Bundle de", entryPoint);
+    bundleCache = bundle({
+      entryPoint,
+      // Mêmes alias que Vite : les compositions importent @shared/*
+      webpackOverride: (config) => ({
+        ...config,
+        resolve: {
+          ...config.resolve,
+          alias: {
+            ...(config.resolve?.alias ?? {}),
+            "@shared": path.resolve(process.cwd(), "shared"),
+          },
+        },
+      }),
+    }).catch((error) => {
+      bundleCache = null; // réessayer au prochain rendu
+      throw error;
+    });
+  }
+  return bundleCache;
+}
+
+/** Rendus en parallèle dans Chromium : par défaut la moitié des cœurs, 1 au minimum. */
+function renderConcurrency(): number {
+  const configured = Number(process.env.RENDER_CONCURRENCY);
+  if (Number.isFinite(configured) && configured > 0) return Math.floor(configured);
+  return Math.max(1, Math.floor(os.cpus().length / 2));
+}
+
+export async function renderReelComposition(options: {
+  compositionId: "ReelVideo" | "ImageVideo";
+  inputProps: Record<string, unknown>;
+  outputLocation: string;
+  onProgress?: (ratio: number) => void;
+}): Promise<void> {
+  const serveUrl = await getRemotionBundle();
+  const composition = await selectComposition({
+    serveUrl,
+    id: options.compositionId,
+    inputProps: options.inputProps,
+  });
+
+  const startedAt = Date.now();
+  await renderMedia({
+    composition,
+    serveUrl,
+    inputProps: options.inputProps,
+    outputLocation: options.outputLocation,
+    codec: "h264",
+    // Qualité visuelle élevée, conforme aux recommandations Instagram/TikTok
+    crf: 18,
+    x264Preset: "medium",
+    pixelFormat: "yuv420p",
+    colorSpace: "bt709",
+    audioCodec: "aac",
+    audioBitrate: "192k",
+    concurrency: renderConcurrency(),
+    onProgress: ({ progress }) => options.onProgress?.(progress),
+    // Une image lente (décodage vidéo sur une petite machine) ne doit pas faire échouer le rendu
+    timeoutInMilliseconds: 60_000,
+    onBrowserLog: (log) => {
+      if (log.type === "error") console.warn("⚠️ [Remotion] Navigateur :", log.text.slice(0, 300));
+    },
+  });
+  console.log(
+    `🎞️ [Remotion] ${options.compositionId} rendu en ${((Date.now() - startedAt) / 1000).toFixed(1)} s`,
+  );
+}

server/services/reels/videoPipeline.ts

@@ -1,15 +1,33 @@
 /**
- * Rendu d'un Reel à partir d'une vidéo : FFmpeg → médiathèque → publication.
+ * Rendu d'un Reel à partir d'une vidéo, puis médiathèque et publication.
  * Exécuté par la file `reel_jobs` (voir queue.ts).
+ *
+ * Deux moteurs :
+ * - « remotion » (défaut) : le service Python prépare l'image (recadrage, HDR,
+ *   stabilisation) et la piste son finale, Remotion compose les sous-titres
+ *   animés, le logo et l'effet de fin — le même rendu que l'aperçu ;
+ * - « ffmpeg » : tout est fait par le service Python (sous-titres ASS),
+ *   plus rapide, conservé en secours (REEL_RENDERER=ffmpeg).
  */
 
-import { videoReelParamsSchema } from "@shared/reel";
+import fs from "fs";
+import path from "path";
+import { FADE_SECONDS } from "@shared/captions";
+import { videoReelParamsSchema, type VideoReelParams } from "@shared/reel";
 import { storage } from "../../storage";
-import { ffmpegService } from "../ffmpeg";
+import { ffmpegService, type ReelRenderOptions } from "../ffmpeg";
 import { resolveInternalUrl } from "../minio";
 import type { JobContext } from "./queue";
 import { resolveGeminiApiKey, resolveLogoPath, resolveMusicUrl } from "./assets";
 import { describePublishFailure, publishReelToPages, storeRenderedVideo } from "./publish";
+import { REMOTION_TEMP_DIR, tempFileUrl, toDataUrl } from "./remotionAssets";
+import { renderReelComposition } from "./remotionRenderer";
+
+export type ReelRenderer = "remotion" | "ffmpeg";
+
+export function configuredRenderer(): ReelRenderer {
+  return process.env.REEL_RENDERER === "ffmpeg" ? "ffmpeg" : "remotion";
+}
 
 export async function runVideoReelJob({ job, progress }: JobContext) {
   if (!job.postId) throw new Error("Job vidéo sans post associé");
@@ -28,9 +46,7 @@ export async function runVideoReelJob({ job, progress }: JobContext) {
     resolveGeminiApiKey(params.ttsEngine),
   ]);
 
-  await progress(15, "render");
-  const startedAt = Date.now();
-  const rendered = await ffmpegService.renderReel(resolveInternalUrl(media.originalUrl), {
+  const options: ReelRenderOptions = {
     text: params.overlayText,
     musicUrl,
     ttsEnabled: params.ttsEnabled,
@@ -42,18 +58,23 @@ export async function runVideoReelJob({ job, progress }: JobContext) {
     musicVolume: params.musicVolume,
     drawText: params.drawText,
     stabilize: params.stabilize,
-    watermarkUrl: logoPath ? resolveInternalUrl(logoPath) : undefined,
     storeName: params.storeName,
     enableEndingEffect: params.enableEndingEffect,
-  });
-  console.log(`⏱️ [Reels] Rendu : ${((Date.now() - startedAt) / 1000).toFixed(1)} s, vidéo de ${rendered.duration.toFixed(1)} s`);
+  };
 
-  await progress(65, "store");
-  const videoBuffer = rendered.video;
+  const renderer = configuredRenderer();
+  const startedAt = Date.now();
+  const videoBuffer =
+    renderer === "remotion"
+      ? await renderWithRemotion(job.id, resolveInternalUrl(media.originalUrl), options, params, logoPath, progress)
+      : await renderWithFfmpeg(resolveInternalUrl(media.originalUrl), options, logoPath, progress);
+  console.log(`⏱️ [Reels] Rendu ${renderer} : ${((Date.now() - startedAt) / 1000).toFixed(1)} s`);
+
+  await progress(88, "store");
   const processedMedia = await storeRenderedVideo(job.userId, videoBuffer, `reel-${Date.now()}.mp4`);
   await storage.updatePostMedia(postId, [processedMedia.id]);
 
-  await progress(85, "publish");
+  await progress(93, "publish");
   const results = await publishReelToPages({
     postId,
     pageIds: params.pageIds,
@@ -66,5 +87,66 @@ export async function runVideoReelJob({ job, progress }: JobContext) {
     throw new Error(describePublishFailure(results));
   }
 
-  return { mediaId: processedMedia.id, results };
+  return { mediaId: processedMedia.id, renderer, results };
+}
+
+async function renderWithFfmpeg(
+  videoUrl: string,
+  options: ReelRenderOptions,
+  logoPath: string | undefined,
+  progress: JobContext["progress"],
+): Promise<Buffer> {
+  await progress(15, "render");
+  const rendered = await ffmpegService.renderReel(videoUrl, {
+    ...options,
+    watermarkUrl: logoPath ? resolveInternalUrl(logoPath) : undefined,
+  });
+  return rendered.video;
+}
+
+async function renderWithRemotion(
+  jobId: string,
+  videoUrl: string,
+  options: ReelRenderOptions,
+  params: VideoReelParams,
+  logoPath: string | undefined,
+  progress: JobContext["progress"],
+): Promise<Buffer> {
+  const workdir = path.join(REMOTION_TEMP_DIR, `reel-${jobId}`);
+  try {
+    // 1. Image recadrée à la durée finale, piste son finale, mots minutés
+    await progress(10, "voice");
+    const prepared = await ffmpegService.prepareReel(videoUrl, { ...options, hasLogo: Boolean(logoPath) }, workdir);
+
+    // 2. Composition : sous-titres animés, logo, effet de fin
+    await progress(40, "render");
+    const outputLocation = path.join(workdir, "reel.mp4");
+    let lastReported = 40;
+    await renderReelComposition({
+      compositionId: "ReelVideo",
+      outputLocation,
+      inputProps: {
+        videoUrl: tempFileUrl(prepared.videoPath),
+        videoDuration: prepared.totalDuration,
+        totalDuration: prepared.totalDuration,
+        words: prepared.words,
+        captionStyle: params.captionStyle,
+        logoUrl: logoPath ? await toDataUrl(logoPath) : undefined,
+        storeName: params.enableEndingEffect ? params.storeName : undefined,
+        logoStart: prepared.logoStart,
+        fadeStart: params.enableEndingEffect ? Math.max(0, prepared.totalDuration - FADE_SECONDS) : null,
+        mixedAudioUrl: prepared.audioPath ? tempFileUrl(prepared.audioPath) : undefined,
+      },
+      onProgress: (ratio) => {
+        const pct = 40 + Math.floor(ratio * 45);
+        if (pct >= lastReported + 5) {
+          lastReported = pct;
+          progress(pct, "render").catch(() => { /* non bloquant */ });
+        }
+      },
+    });
+    return await fs.promises.readFile(outputLocation);
+  } finally {
+    await fs.promises.rm(workdir, { recursive: true, force: true }).catch(() => { /* déjà absent */ });
+  }
 }

server/services/ttsSync.test.ts

@@ -0,0 +1,14 @@
+import { describe, expect, it } from "vitest";
+import { estimateVoiceTiming } from "./ttsSync";
+
+describe("estimateVoiceTiming", () => {
+  it("ignore hashtags et liens dans le décompte", () => {
+    expect(estimateVoiceTiming("Venez vite #promo https://x.fr").wordCount).toBe(2);
+  });
+
+  it("prévient quand la voix sera trop longue", () => {
+    const timing = estimateVoiceTiming("mot ".repeat(200));
+    expect(timing.isHealthy).toBe(false);
+    expect(timing.warnings[0]).toMatch(/Texte long/);
+  });
+});

server/storage.ts

@@ -3,6 +3,7 @@ import {
   socialPages,
   media,
   posts,
+  reelJobs,
   postMedia,
   scheduledPosts,
   aiGenerations,
@@ -44,7 +45,7 @@ import {
   type InsertFacebookConfig,
 } from "@shared/schema";
 import { db } from "./db";
-import { eq, and, gte, lte, desc, asc, isNull, isNotNull, inArray, notInArray, getTableColumns, sql, type SQL } from "drizzle-orm";
+import { eq, and, or, gte, lte, desc, asc, isNull, isNotNull, inArray, notInArray, getTableColumns, sql, type SQL } from "drizzle-orm";
 import { encrypt, decrypt, isEncrypted } from "./utils/encryption";
 
 /**
@@ -147,7 +148,7 @@ export interface IStorage {
   getPosts(userId: string): Promise<Post[]>;
   getPost(id: string): Promise<Post | undefined>;
   getPostWithMedia(id: string): Promise<{ post: Post; media: Media[] } | undefined>;
-  getOngoingReelPosts(userId: string): Promise<Post[]>;
+  getOngoingReelPosts(userId: string): Promise<(Post & { generationStep: string | null })[]>;
   createPost(post: InsertPost): Promise<Post>;
   updatePost(id: string, post: Partial<InsertPost>): Promise<Post>;
   updatePostGenerationStatus(id: string, status: string, progress: number, error?: string): Promise<Post>;
@@ -551,21 +552,34 @@ export class DatabaseStorage implements IStorage {
   }
 
   /**
-   * Reels dont la génération est en cours. Filtré en SQL : la route chargeait
-   * tous les posts de l'utilisateur pour n'en garder qu'une poignée, toutes les
-   * trois secondes.
+   * Reels dont la génération est en cours, plus ceux qui ont échoué dans les
+   * dernières 24 h (pour que l'utilisateur en voie la cause), avec l'étape
+   * courante du rendu. Filtré en SQL : la route est interrogée toutes les
+   * trois secondes pendant un rendu.
    */
-  async getOngoingReelPosts(userId: string): Promise<Post[]> {
-    return await db
+  async getOngoingReelPosts(userId: string): Promise<(Post & { generationStep: string | null })[]> {
+    const since = new Date(Date.now() - 24 * 60 * 60 * 1000);
+    const rows = await db
       .select()
       .from(posts)
       .where(
         and(
           eq(posts.userId, userId),
-          inArray(posts.generationStatus, ['processing', 'pending'])
+          or(
+            inArray(posts.generationStatus, ['processing', 'pending']),
+            and(eq(posts.generationStatus, 'failed'), gte(posts.updatedAt, since), isNotNull(posts.generationError)),
+          ),
         )
       )
       .orderBy(desc(posts.createdAt));
+    if (rows.length === 0) return [];
+
+    const jobs = await db
+      .select({ postId: reelJobs.postId, step: reelJobs.step })
+      .from(reelJobs)
+      .where(inArray(reelJobs.postId, rows.map((p) => p.id)));
+    const stepByPost = new Map(jobs.map((j) => [j.postId, j.step]));
+    return rows.map((post) => ({ ...post, generationStep: stepByPost.get(post.id) ?? null }));
   }
 
   // AI Generations

shared/captions.test.ts

@@ -0,0 +1,63 @@
+import { describe, expect, it } from "vitest";
+import {
+  cleanCaptionText,
+  computeImagesTiming,
+  computeReelTiming,
+  groupLines,
+  offsetWords,
+  spreadWords,
+} from "./captions";
+
+// Mêmes cas que ffmpeg-service/tests/test_render.py : l'aperçu et le rendu
+// doivent tomber sur les mêmes durées.
+describe("computeReelTiming", () => {
+  it("allonge la vidéo quand la voix dépasse", () => {
+    expect(computeReelTiming({ videoDuration: 5, voiceDuration: 10, hasOutro: false, endingEffect: true }).total).toBe(12.8);
+  });
+
+  it("réserve l'effet de fin après la voix", () => {
+    const timing = computeReelTiming({ videoDuration: 6, voiceDuration: 4.8, hasOutro: true, endingEffect: true });
+    expect(timing.total).toBe(9.3);
+    expect(timing.logoStart).toBeCloseTo(6.8);
+    expect(timing.fadeStart).toBeCloseTo(7.3);
+  });
+
+  it("n'a ni logo ni fondu sans effet de fin", () => {
+    const timing = computeReelTiming({ videoDuration: 12, hasOutro: true, endingEffect: false });
+    expect(timing).toEqual({ total: 12, logoStart: null, fadeStart: null });
+  });
+});
+
+describe("computeImagesTiming", () => {
+  it("garde un Reel d'images entre 25 et 30 s", () => {
+    expect(computeImagesTiming({ imageCount: 3, hasEnding: true })).toEqual({ total: 25, endingSeconds: 3 });
+    expect(computeImagesTiming({ imageCount: 4, voiceDuration: 40, hasEnding: true }).total).toBe(30);
+    expect(computeImagesTiming({ imageCount: 4, voiceDuration: 24, hasEnding: false }).total).toBe(25);
+  });
+});
+
+describe("groupLines", () => {
+  const words = (texts: string[]) => texts.map((text, i) => ({ text, start: i, end: i + 0.5 }));
+
+  it("coupe à la ponctuation et limite chaque ligne", () => {
+    const lines = groupLines(words(["Bonjour,", "venez", "découvrir", "nos", "nouveautés"]));
+    expect(lines[0].map((w) => w.text)).toEqual(["Bonjour,"]);
+    expect(lines.every((line) => line.length <= 3)).toBe(true);
+  });
+});
+
+describe("texte des sous-titres", () => {
+  it("retire hashtags, emojis et liens", () => {
+    expect(cleanCaptionText("Promo 🌸 #AménagementExtérieur ici https://x.fr !")).toBe("Promo ici !");
+  });
+
+  it("répartit l'estimation sur l'intervalle", () => {
+    const spread = spreadWords("un deux trois", 2, 5);
+    expect(spread[0].start).toBe(2);
+    expect(spread[spread.length - 1].end).toBeCloseTo(5);
+  });
+
+  it("décale les mots de la voix vers le temps de la vidéo", () => {
+    expect(offsetWords([{ text: "a", start: 0.1, end: 0.4 }], 2)).toEqual([{ text: "a", start: 2.1, end: 2.4 }]);
+  });
+});

shared/captions.ts

@@ -0,0 +1,137 @@
+/**
+ * Sous-titres et minutage des Reels, partagés entre l'aperçu (navigateur),
+ * le rendu Remotion (serveur) et les tests.
+ * Les règles de durée reprennent celles du service Python (app/render.py).
+ */
+
+export const CAPTION_STYLES = ["bold", "neon", "minimal"] as const;
+export type CaptionStyle = (typeof CAPTION_STYLES)[number];
+
+export const CAPTION_STYLE_OPTIONS: { id: CaptionStyle; label: string; description: string }[] = [
+  { id: "bold", label: "Impact", description: "Majuscules, mot prononcé en jaune" },
+  { id: "neon", label: "Surligné", description: "Mot prononcé sur fond coloré" },
+  { id: "minimal", label: "Épuré", description: "Texte qui se révèle au fil de la voix" },
+];
+
+export const DEFAULT_CAPTION_STYLE: CaptionStyle = "bold";
+
+/** Mot affiché et son intervalle, en secondes depuis le début de la vidéo. */
+export interface TimedWord {
+  text: string;
+  start: number;
+  end: number;
+}
+
+export const REEL_FPS = 30;
+export const REEL_WIDTH = 1080;
+export const REEL_HEIGHT = 1920;
+
+/** La voix démarre après ce délai (le temps de capter l'attention). */
+export const VOICE_DELAY = 2;
+const VOICE_TAIL = 0.8;
+const OUTRO_MIN = 2.5;
+const LOGO_SECONDS = 5;
+export const FADE_SECONDS = 2;
+
+export interface ReelTiming {
+  total: number;
+  /** Début de l'effet de fin (grand logo), ou null sans effet de fin. */
+  logoStart: number | null;
+  fadeStart: number | null;
+}
+
+/** Durée finale : la vidéo s'allonge (dernière image figée) si la voix dépasse. */
+export function computeReelTiming(input: {
+  videoDuration: number;
+  voiceDuration?: number;
+  hasOutro: boolean;
+  endingEffect: boolean;
+}): ReelTiming {
+  const hasOutro = input.hasOutro && input.endingEffect;
+  const speechEnd = input.voiceDuration ? VOICE_DELAY + input.voiceDuration : 0;
+  let total = input.videoDuration;
+  if (input.voiceDuration) {
+    total = Math.max(total, speechEnd + VOICE_TAIL);
+    if (hasOutro) total = Math.max(total, speechEnd + OUTRO_MIN);
+  }
+  total = Math.round(total * 1000) / 1000;
+  return {
+    total,
+    logoStart: hasOutro ? Math.max(0, total - LOGO_SECONDS, speechEnd) : null,
+    fadeStart: input.endingEffect ? Math.max(0, total - FADE_SECONDS) : null,
+  };
+}
+
+const MAX_WORDS_PER_LINE = 3;
+const MAX_CHARS_PER_LINE = 18;
+const LINE_BREAK = /[.!?,:;…]$/;
+
+/** Découpe en lignes courtes, coupées de préférence à la ponctuation. */
+export function groupLines(words: TimedWord[]): TimedWord[][] {
+  const lines: TimedWord[][] = [];
+  let current: TimedWord[] = [];
+  for (const word of words) {
+    const chars = current.reduce((n, w) => n + w.text.length + 1, 0) + word.text.length;
+    if (current.length && (current.length >= MAX_WORDS_PER_LINE || chars > MAX_CHARS_PER_LINE)) {
+      lines.push(current);
+      current = [];
+    }
+    current.push(word);
+    if (LINE_BREAK.test(word.text)) {
+      lines.push(current);
+      current = [];
+    }
+  }
+  if (current.length) lines.push(current);
+  return lines;
+}
+
+/** Retire emojis, hashtags et liens : ce qui n'est ni lu ni affiché. */
+export function cleanCaptionText(text: string): string {
+  return text
+    .replace(/https?:\/\/\S+/g, " ")
+    .replace(/#[\wÀ-ÿ]+/g, " ")
+    .replace(/[\uD800-\uDBFF][\uDC00-\uDFFF]/g, " ")
+    .replace(/[☀-➿⬀-⯿️]/g, " ")
+    .replace(/\s+/g, " ")
+    .trim();
+}
+
+/**
+ * Répartit un texte sur un intervalle au prorata de la longueur des mots.
+ * Sert d'aperçu tant que la voix n'a pas été générée.
+ */
+export function spreadWords(text: string, start: number, end: number): TimedWord[] {
+  const tokens = cleanCaptionText(text).split(" ").filter(Boolean);
+  if (!tokens.length || end <= start) return [];
+  const weights = tokens.map((t) => Math.max(1, t.replace(/[^\wÀ-ÿ]/g, "").length));
+  const totalWeight = weights.reduce((a, b) => a + b, 0);
+  let cursor = start;
+  return tokens.map((text, i) => {
+    const duration = ((end - start) * weights[i]) / totalWeight;
+    const word = { text, start: cursor, end: cursor + duration };
+    cursor += duration;
+    return word;
+  });
+}
+
+/** Décale des mots minutés depuis le début de la voix vers le temps de la vidéo. */
+export function offsetWords(words: TimedWord[], offset: number): TimedWord[] {
+  return words.map((w) => ({ ...w, start: w.start + offset, end: w.end + offset }));
+}
+
+const IMAGES_ENDING_SECONDS = 3;
+const IMAGES_MIN_CONTENT = 22;
+const IMAGES_MAX_CONTENT = 27;
+const SECONDS_PER_IMAGE = 3;
+
+/** Reel d'images : 25 à 30 s, diapositive de fin comprise. */
+export function computeImagesTiming(input: { imageCount: number; voiceDuration?: number; hasEnding: boolean }): {
+  total: number;
+  endingSeconds: number;
+} {
+  const natural = Math.max((input.voiceDuration ?? 0) + 1, input.imageCount * SECONDS_PER_IMAGE);
+  const content = Math.min(Math.max(natural, IMAGES_MIN_CONTENT), IMAGES_MAX_CONTENT);
+  const endingSeconds = input.hasEnding ? IMAGES_ENDING_SECONDS : 0;
+  return { total: content + endingSeconds, endingSeconds };
+}

shared/reel.test.ts

@@ -0,0 +1,35 @@
+import { describe, expect, it } from "vitest";
+import { imagesReelParamsSchema, ttsPreviewSchema, videoReelParamsSchema } from "./reel";
+
+describe("videoReelParamsSchema", () => {
+  it("exige une vidéo et une page, avec des messages lisibles", () => {
+    const result = videoReelParamsSchema.safeParse({ pageIds: [] });
+    expect(result.success).toBe(false);
+    expect(result.error?.issues.map((i) => i.message)).toContain("Vidéo requise");
+  });
+
+  it("applique les valeurs par défaut", () => {
+    const params = videoReelParamsSchema.parse({ videoMediaId: "v", pageIds: ["p"] });
+    expect(params).toMatchObject({ captionStyle: "bold", stabilize: false, drawText: true, musicVolume: 0.25 });
+  });
+
+  it("accepte les anciens paramètres encore stockés dans des jobs", () => {
+    expect(videoReelParamsSchema.safeParse({ videoMediaId: "v", pageIds: ["p"], wordDuration: 0.6 }).success).toBe(true);
+  });
+
+  it("refuse un moteur de voix inconnu", () => {
+    expect(videoReelParamsSchema.safeParse({ videoMediaId: "v", pageIds: ["p"], ttsEngine: "autre" }).success).toBe(false);
+  });
+});
+
+describe("imagesReelParamsSchema", () => {
+  it("limite à 4 images", () => {
+    expect(imagesReelParamsSchema.safeParse({ imageUrls: ["a", "b", "c", "d", "e"] }).success).toBe(false);
+  });
+});
+
+describe("ttsPreviewSchema", () => {
+  it("refuse un texte vide", () => {
+    expect(ttsPreviewSchema.safeParse({ text: "   " }).success).toBe(false);
+  });
+});

shared/reel.ts

@@ -5,6 +5,7 @@
  */
 
 import { z } from "zod";
+import { CAPTION_STYLES, DEFAULT_CAPTION_STYLE } from "./captions";
 import { TTS_ENGINES, TTS_STYLES } from "./voices";
 
 const optionalText = z
@@ -33,6 +34,7 @@ export const videoReelParamsSchema = z.object({
   fontSize: z.number().int().min(16).max(200).default(64),
   musicVolume: z.number().min(0).max(2).default(0.25),
   drawText: z.boolean().default(true),
+  captionStyle: z.enum(CAPTION_STYLES).default(DEFAULT_CAPTION_STYLE),
   stabilize: z.boolean().default(false),
   enableEndingEffect: z.boolean().default(true),
   // Déterminé par le serveur à partir de la première page, jamais par le client
@@ -52,6 +54,7 @@ export const imagesReelParamsSchema = z.object({
   ttsEngine: z.enum(TTS_ENGINES).optional(),
   ttsVoice: optionalText,
   ttsStyle: z.enum(TTS_STYLES).optional(),
+  captionStyle: z.enum(CAPTION_STYLES).default(DEFAULT_CAPTION_STYLE),
   storeName: z.string().optional(),
   // Fichiers temporaires à supprimer une fois le rendu terminé
   tempFiles: z.array(z.string()).default([]),

test-bundle.ts

@@ -1,12 +0,0 @@
-import { bundle } from "@remotion/bundler";
-import path from "path";
-
-async function run() {
-  try {
-    const loc = await bundle({ entryPoint: path.resolve("client/src/remotion/index.ts") });
-    console.log("Success:", loc);
-  } catch(e) {
-    console.error("Error bundling", e);
-  }
-}
-run();

test-render.ts

@@ -1,27 +0,0 @@
-import { bundle } from "@remotion/bundler";
-import { renderMedia, selectComposition } from "@remotion/renderer";
-import path from "path";
-
-async function run() {
-  try {
-    const loc = await bundle({ entryPoint: path.resolve("client/src/remotion/index.ts") });
-    console.log("Bundle success:", loc);
-    const comp = await selectComposition({
-      serveUrl: loc,
-      id: "ImageVideo",
-      inputProps: { images: ["https://placehold.co/1080x1920?text=Image+1"] }
-    });
-    console.log("Comp:", comp?.id);
-    await renderMedia({
-      composition: comp,
-      serveUrl: loc,
-      codec: "h264",
-      outputLocation: path.resolve("out.mp4"),
-      inputProps: { images: ["https://placehold.co/1080x1920?text=Image+1"] }
-    });
-    console.log("Render success!");
-  } catch(e) {
-    console.error("Error rendering", e);
-  }
-}
-run();

vitest.config.ts

@@ -0,0 +1,15 @@
+import path from "path";
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  resolve: {
+    alias: {
+      "@shared": path.resolve(import.meta.dirname, "shared"),
+      "@": path.resolve(import.meta.dirname, "client", "src"),
+    },
+  },
+  test: {
+    include: ["shared/**/*.test.ts", "server/**/*.test.ts"],
+    environment: "node",
+  },
+});