opencv读取取视频后，在提取帧图片，并将其保存-opencv access to video, extract frames pictures

视频输入输出库涉及编解码过程的起始和结束操作，即编码开始的时候读取视频文件数据，解码结束的时候写视频文件数据。-Video input and output relates to encoding and decoding process of the start and end of the operation, i.e., when encoding video file data reading starts, when the end of the write decode video

ffmpeg 实现视频解码，读取视频相关参数-decode video by ffmpeg library and read parameters of video

实现对视频文件单帧读取，显示，保存为单个图像文件，使用matlab2015a实现。-To achieve a single video file to read, display, save as a single image file, using matlab2015a implementation.