- FOURCCs: FFV1
- Technical Description: http://www.ffmpeg.org/~michael/ffv1.html
The FFV1 video codec is a simple and efficient lossless intra-frame only codec.
Multiple version of the codec are available. (lu_zero Describe only version 2?)
Version 1 does not have a global header, from version 2 the following field compose the global header.
- minor version
- coder type
- state transition table
- colorspace type
- bits per sample
- horizontal subsampling
- vertical subsampling
- alpha plane presence
- number of horizontal slices
- number of vertical slices
- quantization tables
- error correction
- cyclic redundancy check
Each frame is composed by a small header and the frame data in slices. Version 0 and 1 use a larger per frame header, version 2 and later store only the initial 1bit Range Coded keyframe flag. Depending on the version the slice data provides additional information, a specific quantization table and a redundancy check.
Version 0 and 1 use a large per frame header, version 2 and later store only the initial 1bit Range Coded keyframe flag.
Version 2 slice has the following structure