Update app.py

app.py

@@ -346,7 +346,7 @@ def propagate_to_all(video_in, checkpoint, stored_inference_state, stored_frame_
     print(f"JPEG_IMAGES: {jpeg_images}")
 
     if vis_frame_type == "check":
-        return gr.update(value=jpeg_images), gr.update(value=None), gr.update(choices=jpeg_images, value=jpeg_images[0], visible=False)
+        return gr.update(value=jpeg_images), gr.update(value=None), gr.update(choices=jpeg_images, value=None, visible=False)
     elif vis_frame_type == "render":
         # Create a video clip from the image sequence
         original_fps = get_video_fps(video_in)