使用OpenCV制作的AVI视频播放器，可实现多种功能，包括播放视频，压缩视频，视频截图，并且有可供拖动的视频进度工具条。-Produced using the OpenCV AVI video player, can achieve a variety of functions including video, compressed video, video capture, and there is drag the video for the progress of the toolbar

opencv 视频载入与显示，并设置了工具条，控制图片显示的帧数-opencv vedio track bar