Is a project with unlimited possibilities, the basic idea of which is the creation of an open source media container that works across formats. MKV format involves multiple selectable subtitles, video and audio tracks. Besides, MKV provides an online broadcast, instant rewind of the file and the partition of files into heads.
WavPack lossless audio compression. Note that, when converting .wav to this format and back again, the RIFF header is not necessarily preserved losslessly (though the audio is).