Update app.py

app.py

@@ -88,9 +88,9 @@ def create_video(frames, fps, type):
     print("building video result")
     imgs = []
     for j, img in enumerate(frames):
-        imgs.append(cv2.cvtColor(cv2.imread(img).astype(np.uint8), cv2.COLOR_BGR2RGBA))
+        imgs.append(cv2.cvtColor(cv2.imread(img).astype(np.uint8), cv2.COLOR_BGR2RGB))
 
-    mediapy.write_video(type + "_result.mp4", imgs, fps=fps, codec='hevc', encoded_format='yuva444p')
+    mediapy.write_video(type + "_result.mp4", imgs, fps=fps)
     return type + "_result.mp4"