[Matroska-devel] [Cellar] Colour Format proposal

Michael Niedermayer michael at niedermayer.cc
Wed Jan 6 03:14:25 CET 2016


On Tue, Jan 05, 2016 at 01:12:24PM -0800, Frank Galligan wrote:
> Hello all,
> 
> I would like to bring up the discussion again about better representing the
> color format of video. It looks like the discussion was started here [1] on
> matroska-devel list. I think we need to add some Colour elements so
> Matroska files can (potentially) more faithfully represent the video source
> on many devices. Here is a proposal I created to start from:
[...]
> Element Name: ChromaSubsampling
> Level:        5
> ID:           [55][A3]
> Mandatory:    ma
> Multiple:     -
> Default:      0
> Type:         u
> Description:  (0: 4:2:0, 2: 4:2:2, 4: 4:4:4)

i suggest to store 2 integers, one for vertical and one for horizontal
chroma subsampling, that allows indicating any subsampling
and its a logic and simple way to indicate the subsampling

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Republics decline into democracies and democracies degenerate into
despotisms. -- Aristotle
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