Python OpenCV3 VideoCapture读取视频文件失败解决方案

来源：互联网发布：台湾的未来知乎编辑：程序博客网时间：2024/05/16 12:03

问题描述

环境：Windows 7、Python2.7、OpenCV3.2、Miniconda2
如下代码不能打开视频：

def playing_video_from_file():    # videocv2.VideoWriter_fourcc(*'mp4v')    videoCapture = cv2.VideoCapture()    videoCapture.open("../videos/movie.avi")    # 获得码率及尺寸    fps = videoCapture.get(cv2.CAP_PROP_FPS)    size = (int(videoCapture.get(cv2.CAP_PROP_FRAME_WIDTH)),            int(videoCapture.get(cv2.CAP_PROP_FRAME_HEIGHT)))    print size    # 指定写视频的格式, I420-avi, MJPG-mp4    videoWriter = cv2.VideoWriter('./output/MyOutputVid.avi',                                  cv2.VideoWriter_fourcc('I', '4', '2', '0'),                                  fps, size)    # 读帧    success, frame = videoCapture.read()    while success:  # Loop until there are no more frames.        cv2.imshow("show window", frame)  # 显示        cv2.waitKey(1000 / int(fps))  # 延迟        videoWriter.write(frame)  # 写视频帧        success, frame = videoCapture.read()  # 获取下一帧    # When everything done, release the capture    videoCapture.release()    cv2.destroyAllWindows()

解决方案

复制 OpenCV 安装路径下的 D:\opencv_3_2\opencv\build\x64\vc14\bin\下的所有动态链接库文件到Python 安装的路径下/Miniconda2的安装路径下：

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