tw2835 视频的采集范例回放需在linux 底 下-tw2835 video capture sample playback under linux need to

基于linux + arm cotex-a9下的音视频编解码，及通道设置，实现音视频录制及播放。-Based on linux+ arm cotex-a9 under the audio and video codecs, and channel settings to achieve audio and video recording and playback.