Re: [Cellar] AV1 mapping Matroska

Steve Lhomme <slhomme@matroska.org> Mon, 02 July 2018 13:46 UTC

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From: Steve Lhomme <slhomme@matroska.org>
Date: Mon, 2 Jul 2018 15:46:06 +0200
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To: Codec Encoding for LossLess Archiving and Realtime transmission <cellar@ietf.org>
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Subject: Re: [Cellar] AV1 mapping Matroska
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I updated the document with the following changes:

- the Sequence Header OBU in CodecPrivate has the same restrictions as
a coded video sequence in AV1

- if all Sequence Header OBU in Blocks are going to be the same
(decoder_model_info_present_flag =0) they can be omitted from the
Blocks.

- if decoder_model_info_present_flag =1 in the CodecPrivate then all
keyframes MUST have a Sequence Header OBU

- the low overhead syntax is a MUST

- set the keyframe flag/ReferenceBlock for valid random access points
(not intra frame).

- remove the Inisible bit mention (it's actually supposed to be used
for prerolling when editing files).

- DisplayWidth/Height are just hints of how to get the value

- typos (from mkver)

https://github.com/Matroska-Org/matroska-specification/blob/av1-mappin/codec/av1.md

-- 
Steve Lhomme
Matroska association Chairman