FFmpeg是一套可以用来记录、转换数字音频、视频，并能将其转化为流的开源计算机程序。采用LGPL或GPL许可证。它提供了录制、转换以及流化音视频的完整解决方案。(FFmpeg is an open source computer program that can be used to record, convert digital audio, video, and convert it into a stream. Use LGPL or GPL license. It provides a complete solution for recording, converting, and streaming audio and video.)