FFV1

• 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.

Bitstream structure

Global Header

Version 1 does not have a global header, from version 2 the following field compose the global header.

• version
• minor version

• coder type

• state transition table

• colorspace type

• bits per sample

• chroma_planes

• horizontal subsampling
• vertical subsampling

• alpha plane presence

• number of horizontal slices
• number of vertical slices

• quantization tables

• error correction

• cyclic redundancy check

Frame

Each frame is composed by a small header and the frame data in slices

Header

Version 1

Version 0 and 1 use only the per frame header defined as following.

Version 2

Version 2 and later store only the initial 1bit Range Coded keyframe flag.