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.
Audio Video Interleaved (also Audio Video Interleave), known by its initials AVI, is a multimedia container format introduced by Microsoft in November 1992 as part of its Video for Windows software. AVI files can contain both audio and video data in a file container that allows synchronous audio-with-video playback. Like the DVD video format, AVI files support multiple streaming audio and video, although these features are seldom used. Most AVI files also use the file format extensions developed by the Matrix OpenDML group in February 1996. These files are supported by Microsoft, and are unofficially called "AVI 2.0".