diff --git a/attached_assets/{56D2641F-E36F-413A-9B5A-9D6E39B88B8E}_1760435149127.png b/attached_assets/{56D2641F-E36F-413A-9B5A-9D6E39B88B8E}_1760435149127.png
new file mode 100644
index 0000000..c815a2c
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diff --git a/client/src/components/media-upload.tsx b/client/src/components/media-upload.tsx
index 9340414..6200180 100644
--- a/client/src/components/media-upload.tsx
+++ b/client/src/components/media-upload.tsx
@@ -115,7 +115,14 @@ export default function MediaUpload() {
   const handleCameraCapture = (e: React.ChangeEvent<HTMLInputElement>) => {
     const file = e.target.files?.[0];
     if (file) {
-      uploadMutation.mutate(file);
+      // Correction Android : créer un nom valide si le fichier n'a pas de nom
+      let fileToUpload = file;
+      if (!file.name || file.name === 'blob' || file.name === '') {
+        const extension = file.type.split('/')[1] || 'jpg';
+        const newFileName = `camera-${Date.now()}.${extension}`;
+        fileToUpload = new File([file], newFileName, { type: file.type });
+      }
+      uploadMutation.mutate(fileToUpload);
       // Réinitialiser l'input pour permettre de capturer la même photo à nouveau
       e.target.value = '';
     }
diff --git a/client/src/pages/new-post.tsx b/client/src/pages/new-post.tsx
index c841d79..83fd9dc 100644
--- a/client/src/pages/new-post.tsx
+++ b/client/src/pages/new-post.tsx
@@ -294,7 +294,14 @@ export default function NewPost() {
   const handleCameraCapture = (e: React.ChangeEvent<HTMLInputElement>) => {
     const file = e.target.files?.[0];
     if (file) {
-      uploadMutation.mutate(file);
+      // Correction Android : créer un nom valide si le fichier n'a pas de nom
+      let fileToUpload = file;
+      if (!file.name || file.name === 'blob' || file.name === '') {
+        const extension = file.type.split('/')[1] || 'jpg';
+        const newFileName = `camera-${Date.now()}.${extension}`;
+        fileToUpload = new File([file], newFileName, { type: file.type });
+      }
+      uploadMutation.mutate(fileToUpload);
     }
   };
 
diff --git a/replit.md b/replit.md
index 463934a..24f59b3 100644
--- a/replit.md
+++ b/replit.md
@@ -11,6 +11,7 @@ Preferred communication style: Simple, everyday language.
 ## Recent Changes
 
 ### October 14, 2025
+- **Android Camera Upload Fix**: Fixed critical Android camera capture bug where uploads failed with 400 error. Android devices send captured files with invalid names (empty, 'blob', etc.) that Multer rejects. Solution: `handleCameraCapture` now detects invalid filenames and creates new File object with generated name `camera-${timestamp}.${extension}` while preserving MIME type. Applied to both new-post and media-upload components. iPhone functionality unaffected.
 - **Mobile Performance Optimizations**: Implemented comprehensive mobile speed optimizations for "Nouvelle publication" and "Médiathèque" pages. Changes include: (1) Adaptive initial loading - 6 media items on mobile (<768px), 12 on desktop; (2) Optimized thumbnail URLs - replaced `originalUrl` with `facebookFeedUrl` (1080x1080 Cloudinary transformed images) for 70-90% reduction in data transfer while keeping `originalUrl` for zoom/preview quality; (3) Native lazy loading - added `loading="lazy"` attribute to all `<img>` tags for deferred off-screen image loading; (4) Responsive grid layout - 2 columns on mobile, 3 on desktop (sm:grid-cols-3) for better touch targets. Expected impact: Initial load time reduced from 3-5s to <1s on mobile devices.
 - **Camera Capture in Media Library**: Added camera button 📷 to MediaUpload component, mirroring functionality from new-post page. Mobile users (lg:hidden) can now capture photos/videos directly from device camera and auto-upload to media library. Implementation includes hidden file input with `capture="environment"`, `handleCameraCapture` handler with input value reset (`e.target.value = ''`) to enable repeated captures, and integration with existing `uploadMutation` for seamless cloud storage.
 - **Video Publishing for Facebook**: Implemented complete video support for Facebook feed and stories. Added `publishVideoPost()` method using `/videos` endpoint with `file_url` parameter for feed videos, and `publishVideoStory()` using `/video_stories` endpoint for story videos. Modified `publishStory()` to detect video media type and route to appropriate handler. Updated `publishPost()` logic to separate image vs video media filtering and use correct publishing methods. Video preview now uses `<video>` tags with controls in PreviewModal via `renderMedia()` helper function.