【OpenCV计算机视觉整整80集】23年最新0基础-计算机视觉图像处理全套高清

import CV2

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

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

# 获取摄像头设备
cap = CV2.VideoCapture(0)

while cap.isOpened():
    # 从摄像头map里读取数据，返回数据帧frame
    ret, frame = cap.read()

    if ret:
        # 将视频帧在窗口显示
        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
# 资源释放
cap.release()
vw.release()
CV2.destroyWindow("video")

为啥我输出的mp4打不开