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DV file format
DV was created in 1995 as a digital format of video compression and magnetic video recording. With an 8-bit digital component video signal and a resolution of 720×576 pixels, data is transferred in the form of a DIF-sequence containing audio, video, and subcode data. The service area is used for the storage of time and date.
DV, DVCAM, and DVCPRO are Digital Video families with the same video encodings. Data in the DV format is into formats with each having 80-byte blocks. The blocks form the DV streams with each block having a 3-byte ID header that tells the block type and position in the DIF. Types of blocks are; Video Auxiliary Information (VAUX), Subcode, DIF sequence header, Video, and Audio. The blocks are in raw form as files (.dv or .dif extension) and put in formats such as MXF, AVI, and QuickTime.