[FFmpeg-devel] FFV1 specification: plane_count prior to version 4
jerome at mediaarea.net
Fri May 1 15:52:06 CEST 2015
In FFV1 specification, I read:
> plane_count prior to version 4: without transparency: 2 else 3.
> version 4 and later: gray: 1, gray+alpha or color:2, color+alpha:3
but in both headers (FrameHeader01 or GlobalHeader), I see chroma_planes
flag, it looks like all versions of FFV1 bitstream are supporting gray
Does it make sense to consider this difference between "prior to version
4" and "version 4 and later" as applicable to the FFmpeg
encoder/decoder, not the FFV1 bistream specification itself?
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