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.
A headerless file of Dialogic/OKI ADPCM audio data commonly comes with the extension .vox. This ADPCM data has 12-bit precision packed into only 4-bits.