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Re: [Cellar] Fwd: Update specification language: CodecPrivate element MUST be set for H264 in Matroska

Jerome Martinez <jerome@mediaarea.net> Sun, 27 December 2020 19:21 UTC

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From: Jerome Martinez <jerome@mediaarea.net>
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Date: Sun, 27 Dec 2020 20:21:33 +0100
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Subject: Re: [Cellar] Fwd: Update specification language: CodecPrivate element MUST be set for H264 in Matroska
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On 27/12/2020 17:38, guest271314 wrote:
>
> Alternatively, if your conclusion is that the specification/standard 
> is clear right now, can you kindly inform the Chrome authors of the 
> same, and their omission of the element is non-compliant with the 
> specification/standard [...]

I am pretty sure that this is clear for them as the files can not be 
decoded correctly, just that what Google uses is more VP8/VP9/AV1/Opus, 
and these coding formats don't need CodecPrivate.
And from 
https://bugs.chromium.org/p/chromium/issues/detail?id=601636#c2, it 
looks like they don't wait for a change in the spec.
Anyway, better to be clear, I'll send a PR about that.

Jérôme

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