From: Cosmin Stejerean via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>
To: "FFmpeg development discussions and patches" <ffmpeg-devel@ffmpeg.org>
Cc: "Cosmin Stejerean" <cosmin@cosmin.at>
Subject: Re: [FFmpeg-devel] [PATCH 4/4] avcodec/libx265: encode dovi RPUs
Date: Tue, 19 Mar 2024 21:59:53 +0000
Message-ID: <0101018e58ba623d-1a9efcb1-9390-4cea-806a-b64b29d6c0e7-000000@us-west-2.amazonses.com> (raw)
In-Reply-To: <a5e734aa-27ba-4613-bd1b-700277f2098c@gmail.com>
> On Mar 19, 2024, at 2:39 PM, Derek Buitenhuis <derek.buitenhuis@gmail.com> wrote:
>
> The reason I never implemented this back when I adde RPU side data is that
> there is a strong chance of generating broken files.
>
> That's because if we do anything to the video with swscale, etc., we're
> now encoding RPUs that aren't meant to be applied to that converted video.
>
> For example, this could end up propagating RPUs when the user is tonemapping.
Would it be possible to only propagate RPUs if the color params are not changing? If there's any change from say PQ to HLG or HLG to PQ or tonemapping then we wouldn't want to propagate RPUs. If the color params are not changing then propagating RPUs by default seems sensible, and perhaps a filter can be added to explicitly clear RPUs if they should not be propagated.
- Cosmin
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next prev parent reply other threads:[~2024-03-19 22:00 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-19 19:16 [FFmpeg-devel] [PATCH 1/4] fftools/ffmpeg_enc: strip DOVI config record for AV1 Niklas Haas
2024-03-19 19:16 ` [FFmpeg-devel] [PATCH 2/4] avcodec/dovi_rpu: implement T.35 payload synthesis Niklas Haas
2024-03-19 19:16 ` [FFmpeg-devel] [PATCH 3/4] avcodec/libaomenc: encode dovi RPUs as T.35 metadata Niklas Haas
2024-03-19 19:16 ` [FFmpeg-devel] [PATCH 4/4] avcodec/libx265: encode dovi RPUs Niklas Haas
2024-03-19 21:39 ` Derek Buitenhuis
[not found] ` <9183F034-A7F5-4683-A932-273E15B9886C@cosmin.at>
2024-03-19 21:59 ` Cosmin Stejerean via ffmpeg-devel [this message]
2024-03-19 23:04 ` Niklas Haas
2024-03-19 23:19 ` Vittorio Giovara
2024-03-21 12:09 ` Niklas Haas
2024-03-20 19:30 ` Michael Niedermayer
2024-03-20 21:22 ` Jan Ekström
2024-03-21 12:02 ` Niklas Haas
2024-03-21 10:16 ` [FFmpeg-devel] [PATCH 1/4] fftools/ffmpeg_enc: strip DOVI config record for AV1 Anton Khirnov
2024-03-21 12:11 ` Niklas Haas
2024-03-22 9:41 ` Anton Khirnov
2024-03-22 13:08 ` Niklas Haas
2024-03-22 17:04 ` Niklas Haas
2024-03-23 17:45 ` Niklas Haas
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