import CV2

fourcc = CV2.VideoWriter_fourcc(*"MJPG")
vw = CV2.VideoWriter("D:/out.mp4", fourcc, 30, (1280, 720))

# 創(chuàng)建窗口
CV2.namedWindow("video", CV2.WINDOW_NORMAL)
CV2.resizeWindow("video", 640, 360)

# 獲取攝像頭設(shè)備
cap = CV2.VideoCapture(0)

while cap.isOpened():
    # 從攝像頭map里讀取數(shù)據(jù)，返回?cái)?shù)據(jù)幀frame
    ret, frame = cap.read()

    if ret:
        # 將視頻幀在窗口顯示
        CV2.imshow("video", frame)
        CV2.resizeWindow("video", 640, 360)

        vw.write(frame)

        key = CV2.waitKey(1)
        if key & 0xFF == ord("q"):
            break
        elif key & 0xFF == ord("s"):
            CV2.imwrite("D:\\video_cap.jpg", frame)
    else:
        break
# 資源釋放
cap.release()
vw.release()
CV2.destroyWindow("video")

為啥我輸出的mp4打不開