问如何解决写视频时出现的文件类型不支持、文件扩展名不正确、文件损坏等问题？

EN

This file isn't playable. That might be because the file type is unsupported, the file extension is incorrect, or the file is corrupt

import cv2

path = "C:/Users/gri_o/Desktop/opencvProjects/ProjectOne/testVideos/myvideo.mp4"

video_selected = cv2.VideoCapture(path)

vid_cod = cv2.VideoWriter_fourcc(*'mp4v')
out = cv2.VideoWriter('media/testOne.mp4', vid_cod, 20.0, (640,480))
while(True):
    ret,frame = video_selected.read()
    if ret == True:

        out.write(frame)
        cv2.imshow('frame', frame)
    # Press Q on keyboard to  exit
        if cv2.waitKey(10) & 0xFF == ord('q'):
            break
    else:
        break

video_selected.release()
out.release()