一个全功能的视频转码程序，根据指定配置参数来给视频转换成任意格式，本身是调用的 mplayer/mencode 还有 mkvtoolnix 是做视频编解码很好的参考。-A full-featured video transcoding program, according to the specified configuration parameters to convert video into any format itself is called the mplayer/mencode t