视频在解码过程中，有时候需要检测是否含有马赛克帧，及时去除以提高视频质量。这里利用多线程，实现了视频解码过程中马赛克实时检测。-Video in the decoding process, and sometimes need to detect whether it contains mosaic frame, timely removal to improve the video quality. Here the use of multi-threaded, to achieve the