Re: [Cellar] ffv1 version 4 status
Jerome Martinez <jerome@mediaarea.net> Wed, 17 January 2024 17:39 UTC
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From: Jerome Martinez <jerome@mediaarea.net>
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Subject: Re: [Cellar] ffv1 version 4 status
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On 17/01/2024 16:39, Dave Rice wrote: > There has not been much for changes or discussions on this document so I wanted to summarize open issues to nudge some dialogue and contribution. There is also an issue to handle about odd dimensions and chroma subsampling, a corner case but in that configuration the reference encoder is buggy and the reference decoder can not handle the created streams. Michael suggested a method for handling that: https://ffmpeg.org/pipermail/ffmpeg-devel/2023-October/315521.html but it requires an update of the v4 spec about the count of pixels per slice, as well as potentially an errata to v3 spec. We need to decide if we want to change the spec or not about that. I created a FFmpeg trac ticket (I initially thought it was a FFmpeg bug with a theoretical usage only and without impact on the spec): https://trac.ffmpeg.org/ticket/5548 But forgot to create a FFV1 ticket when Michael indicated that it could require a spec change, so here it is: https://github.com/FFmpeg/FFV1/issues/274 Jérôme
- [Cellar] ffv1 version 4 status Dave Rice
- Re: [Cellar] ffv1 version 4 status AV Preservation by reto.ch (lists)
- Re: [Cellar] ffv1 version 4 status Jerome Martinez