Update app.py

app.py

@@ -28,7 +28,7 @@ def inference(video):
       output_alpha="pha.mp4",          # [Optional] Output the raw alpha prediction.
       output_foreground="fgr.mp4",     # [Optional] Output the raw foreground prediction.
       output_video_mbps=4,             # Output video mbps. Not needed for png sequence.
-      seq_chunk=7,                    # Process n frames at once for better parallelism.
+      seq_chunk=12,                    # Process n frames at once for better parallelism.
       num_workers=1,                   # Only for image sequence input. Reader threads.
       progress=True                    # Print conversion progress.
   )