Matroska Video

File extension: .mkv, .mk3d, .mka, .mks Developed by: Type of format: Container format MIME: video/x-matroska, audio/x-matroska
The Matroska Multimedia Container is an open standard free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file. It is intended to serve as a universal format for storing common multimedia content, like movies or TV shows.