The main part of av_convert is a C++ API for accessing audio/video files (AVI, Quicktime, YUV4MPEG stream, WAV, etc.). This functionality is provided by a library and a set of plugin modules for I/O backends and audio/video codecs. Using this library, "av_convert" can convert between these file formats and provide basic editing functions, such as cutting parts of different video sources to one destination. The included program "av_rec" can record real-time video from a v4l-video-source with A/V sync.