Fix video export format and add proper dependencies

- Handle different pipeline output formats (frames attribute vs list)
- Add imageio and imageio-ffmpeg for proper video export
- Fix 'list' object has no attribute 'shape' error

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app.py

@@ -60,7 +60,7 @@ def generate_interpolation(
         # Generate video
         generator = torch.Generator(device="cuda").manual_seed(seed)
 
-        video = pipe(
+        output = pipe(
             prompt=prompt,
             first_image=first_image,
             last_image=last_image,
@@ -69,14 +69,22 @@ def generate_interpolation(
             num_frames=num_frames,
             guidance_scale=guidance_scale,
             generator=generator,
-        )[0]
+        )
+
+        # Extract video frames - handle different output formats
+        if hasattr(output, 'frames'):
+            video_frames = output.frames[0]
+        elif isinstance(output, (list, tuple)):
+            video_frames = output[0]
+        else:
+            video_frames = output
 
         # Export to temporary file
         temp_file = tempfile.NamedTemporaryFile(delete=False, suffix=".mp4")
         output_path = temp_file.name
         temp_file.close()
 
-        export_to_video(video, output_path, fps=fps)
+        export_to_video(video_frames, output_path, fps=fps)
 
         status = f"✓ Video generated successfully! ({num_frames} frames at {fps} fps)"
         print(status)

requirements.txt

@@ -6,4 +6,6 @@ torchvision
 Pillow
 spaces
 sentencepiece
-opencv-python-headless
+opencv-python-headless
+imageio
+imageio-ffmpeg