FFmpeg is an open source software project whose main purpose is to convert video and audio formats. It also supports some still image formats. It includes:
- libavformat, a library for reading and writing "container" formats and other file formats
- libavcodec, a library of video and audio codecs
- ffmpeg, a command line format conversion utility
- ffplay, a simple media player
ffmpeg utility has many options. In simplest form, to convert example.fli to example.mkv:
$ ffmpeg -i example.fli example.mkv
FFmpeg considers some file formats to be "formats", and others to be "codecs". You may need to use the
-c option to select the input and/or output format. To list the formats supported by your copy of FFmpeg:
$ ffmpeg -formats $ ffmpeg -codecs
There is a fork of FFmpeg, confusingly named Libav. It is said to be more focused on quality, while FFmpeg is more focused on features.
- VLC, a popular media player that uses FFmpeg's libavcodec library.