ffmpeg v3.4.2.0.chm

ffmpeg api 文档 v3.4.2 •libavcodec encoding/decoding library •libavfilter graph-based frame editing library •libavformat I/O and muxing/demuxing library •libavdevice special devices muxing/demuxing library •libavutil common utility library •libswresample audio resampling, format conversion and mi