Update app.py

app.py

@@ -40,10 +40,10 @@ helper = DeepCacheSDHelper(pipe=pipe)
 helper.set_params(
     # cache_interval means the frequency of feature caching, specified as the number of steps between each cache operation.
     
-    cache_interval=3,
+    cache_interval=4,
 
     # cache_branch_id identifies which branch of the network (ordered from the shallowest to the deepest layer) is responsible for executing the caching processes. 
-    cache_branch_id=0,
+    cache_branch_id=1,
 
     # Opting for a lower cache_branch_id or a larger cache_interval can lead to faster inference speed at the expense of reduced image quality
     #(ablation experiments of these two hyperparameters can be found in the paper).
@@ -65,7 +65,9 @@ def export_to_video_file(video_frames, output_video_path=None, fps=10):
     elif isinstance(video_frames[0], Image.Image):
         video_frames = [np.array(frame) for frame in video_frames]
 
-    # Use VP9 codec
+    # Use VP9 codec - don't freak out: yes, this will throw an exception, but this still works
+    # https://stackoverflow.com/a/61116338
+    # I suspect there is a bug somewhere and the actual hex code should be different
     fourcc = cv2.VideoWriter_fourcc(*'VP90')
     h, w, c = video_frames[0].shape
     video_writer = cv2.VideoWriter(output_video_path, fourcc, fps, (w, h), True)