Update app.py

app.py

@@ -391,6 +391,12 @@ def propagate_to_all(video_in, checkpoint, stored_inference_state, stored_frame_
         mask_clip = ImageSequenceClip(masks_frames, fps=fps)
         # Write the result to a file
         mask_final_vid_output_path = "mask_output_video.mp4"
+
+        # Write the result to a file
+        mask_clip.write_videofile(
+            mask_final_vid_output_path,
+            codec='libx264'
+        )
         
         return gr.update(value=None), gr.update(value=final_vid_output_path), working_frame, available_frames_to_check, gr.update(visible=True), mask_final_vid_output_path