Update app.py

app.py

@@ -46,10 +46,11 @@ def zip_files(files_in, files_out):
 
 def create_video(frames, fps, type):
     print("building video result")
+    imgs = []
     for j, img in enumerate(frames):
-        frames[j] = cv2.cvtColor(cv2.imread(img).astype(np.uint8), cv2.COLOR_BGR2RGB)
+        imgs[j] = cv2.cvtColor(cv2.imread(img).astype(np.uint8), cv2.COLOR_BGR2RGB)
 
-    mediapy.write_video(type + "_result.mp4", frames, fps=fps)
+    mediapy.write_video(type + "_result.mp4", imgs, fps=fps)
     return type + "_result.mp4"
 
 @torch.no_grad()