cv2读取媒体并保存为视频文件

import cv2


def test01():
    uri = ""
    cap = cv2.VideoCapture(uri)

    # Define the codec and create VideoWriter object
    # fourcc = cv2.VideoWriter_fourcc(*'XVID')
    fourcc = cv2.VideoWriter_fourcc(*'mp4v')
    out = cv2.VideoWriter('video_save.mp4', fourcc, 30.0, (1920, 1080))

    while cap.isOpened():
        ret, frame = cap.read()
        if ret:
            # frame = cv2.flip(frame, 0)  # 翻转

            # write the flipped frame
            out.write(frame)

            cv2.imshow('frame', frame)
            if cv2.waitKey(1) & 0xFF == ord('q'):
                break
        else:
            break

    # Release everything if job is finished
    cap.release()
    out.release()
    cv2.destroyAllWindows()