针对视音频捕获回放过程中视频超前、音频滞后的现象 ,提出了一种以音频为基准的视频捕获丢帧补偿算法 ,其利用稳定的音频数据作为同步基准 ,在视频帧数据写入流媒体文件时进行丢帧补偿处理 ,从而保证视音频捕获的同步。本算法已在西安交通大学网络教育示范系统中得到了应用。应用表明 ,本算法较好地解决了视音频捕获同步问题 Aiming at the phenomenon of video advance and audio lag in video and audio capture and playback, an audio-based video capture and frame loss compensation algorithm is proposed, which uses the stable audio data as a reference for synchronization. When the video frame data is written to a streaming media file When the frame loss compensation processing, so as to ensure video and audio capture synchronization. The algorithm has been in Xi’an Jiaotong University network education demonstration system has been applied. The application shows that this algorithm solves the video and audio capture synchronization problem well