带有OpenCV错误的视频捕获

Question

如何使用OpenCV阅读视频？ 我是这样读的：

video = cv2.VideoCapture("videos/chaplin.avi")

我得到了这个错误：

[ERROR:0] global C:\projects\opencv-python\opencv\modules\videoio\src\cap.cpp (142) cv::VideoCapture::open VIDEOIO(CV_IMAGES): raised OpenCV exception:
OpenCV(4.3.0) C:\projects\opencv-python\opencv\modules\videoio\src\cap_images.cpp:253: error: (-5:Bad argument) CAP_IMAGES: can't find starting number (in the name of file): videos/chaplin.avi in function 'cv::icvExtractPattern'

Could not open video

Answer 1

我也遇到了同样的问题，编译和链接正常，但运行时也会出现同样的神秘错误

当opencv_videoio_ffmpeg430_64.dll不可访问时（在Windows中）发生了这种情况（它似乎被另一个opencv库以静默方式调用）。您没有使用-DWITH_FFMPEG=ON构建opencv，或者您的dll不在路径中