在编译yolov3模型时遇到问题。每次尝试编译时，都会出现2条警告和一条错误消息：
C:\Users\320\Desktop\video-streaming>[INFO] loading YOLO from disk...
sdjfonrfoknokl 'C:/Users/320/Desktop/video-streaming/input_videos/airport.mp4'
warning: Error opening file (/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:901)
warning: 'C:/Users/320/Desktop/video-streaming/input_videos/airport.mp4' (/build/opencv/modules/videoio/src/cap_ffmpeg_impl.hpp:902)
[INFO] 0 total frames in video
[INFO] cleaning up...
Traceback (most recent call last):
File "C:\Users\320\Desktop\video-streaming\yolo_video.py", line 166, in <module>
writer.release()
AttributeError: 'NoneType' object has no attribute 'release'