The format Digital Video (DV) is a video standard of domestic, industrial and broadcast range. It is based on the DCT algorithm and protocol used as data transmission or IEEE 1394 Firewire. Usually written to tape a quarter inch (with three variants: Mini, M and L). It was created in 1996 as an international standard in accordance with IEC 61834 standard, which defines the codec and the tape type. It was developed as a digital video format for an industrial setting, but excellent value meant that it has become the dominant home video format such as Mini-DV, and encountered professionals, DVCAM and DVCPRO versions. One type DV50 format, Digital-S, based on this standard but recorded in half-inch tape. Its popularity has caused it to be commercial basis even for an inexpensive high-definition format, HDV, only share the tape type.
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. Matroska is similar in concept to other containers like AVI, MP4, or Advanced Systems Format (ASF), but is entirely open in specification, with implementations consisting mostly of open source software. Matroska file extensions are .MKV for video (with subtitles and audio), .MK3D for stereoscopic video, .MKA for audio-only files, and .MKS for subtitles only.