feat: Implement FastAPI service for video processing with advanced TTS generation and word-level synchronized subtitles.

ffmpeg-service/main.py

@@ -862,12 +862,20 @@ async def process_reel(request: ReelRequest, x_api_key: str = Header(None)):
 
         if has_watermark:
             if request.store_name:
-                # Ouro Party Mode
-                # 1. Scaling the logo large for the center
-                fc_parts.append(f"[{watermark_idx}:v]scale=-1:300[wm]")
-                # 2. Placing it in the center, and fading it IN during the last 5 seconds
-                v_chain += f"[v_pre_wm];[v_pre_wm][wm]overlay=(W-w)/2:(H-h)/2-100:enable='between(t,{logo_start_time},{video_duration})'"
-                # 3. Drawing the Store Name below the logo using ASS subtitles instead of drawtext!
+                # Ouro Party Mode + Persistent bottom right
+                
+                # We need two scaled versions of the logo
+                # [wm_small]: Bottom right persistent logo
+                fc_parts.append(f"[{watermark_idx}:v]scale=200:-1,split=2[wm_small_base][wm_large_base]")
+                fc_parts.append(f"[wm_large_base]scale=-1:300[wm_large]")
+
+                # 1. Place small logo in bottom right throughout the whole video
+                v_chain += "[v_pre_small];[v_pre_small][wm_small_base]overlay=W-w-20:H-h-20"
+                
+                # 2. Place large logo in the center, and fading it IN during the last 5 seconds
+                v_chain += f"[v_pre_large];[v_pre_large][wm_large]overlay=(W-w)/2:(H-h)/2-100:enable='between(t,{logo_start_time},{video_duration})'"
+                
+                # 3. Drawing the Store Name below the logo using ASS subtitles
                 outro_ass_path = job_dir / "outro.ass"
                 generate_outro_ass(
                     request.store_name, outro_ass_path, logo_start_time, video_duration