From: Marton Balint <cus@passwd.hu>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH] avcodec/jpeg2000dec: support of 2 fields in 1 AVPacket
Date: Mon, 19 Feb 2024 00:43:54 +0100 (CET)
Message-ID: <09861d58-ea32-b60b-8bec-0a7abe8c5f28@passwd.hu> (raw)
In-Reply-To: <170807953799.21676.17770996753219434814@lain.khirnov.net>
On Fri, 16 Feb 2024, Anton Khirnov wrote:
> Quoting Tomas Härdin (2024-02-03 20:58:20)
>> I think people with knowledge how interlacing is handled in other
>> formats and codecs might want to chime in.
>
> For MPEG codecs our decoders always output (properly signalled)
> interlaced content as two interleaved fields in a single AVFrame flagged
> with AV_FRAME_FLAG_INTERLACED. Its height is the height of the whole
> frame, so double the number of lines in each field.
>
> So IIUC this patch is taking the correct approach.
I believe interlaced HEVC has the same issue, the decoder generates field
pictures and not frames. Would changing the HEVC decoder be acceptable to
generate frames with interleaved fields?
Regards,
Marton
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next prev parent reply other threads:[~2024-02-18 23:44 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-02 15:55 Jerome Martinez
2024-02-03 10:00 ` Tomas Härdin
2024-02-03 10:51 ` Jerome Martinez
2024-02-03 19:58 ` Tomas Härdin
2024-02-03 20:04 ` Tomas Härdin
2024-02-04 0:20 ` Pierre-Anthony Lemieux
2024-02-05 0:19 ` Tomas Härdin
2024-02-15 15:02 ` Jerome Martinez
2024-02-16 0:02 ` Vittorio Giovara
2024-02-16 2:17 ` Kieran Kunhya
2024-02-18 23:14 ` Tomas Härdin
2024-02-19 11:08 ` Tomas Härdin
2024-02-19 11:19 ` Jerome Martinez
2024-02-16 10:32 ` Anton Khirnov
2024-02-18 23:43 ` Marton Balint [this message]
2024-02-19 8:22 ` Hendrik Leppkes
2024-02-19 16:14 ` Devin Heitmueller
2024-02-19 11:05 ` Tomas Härdin
2024-02-19 11:07 ` Tomas Härdin
2024-02-05 2:25 ` James Almer
2024-02-05 14:28 ` Tomas Härdin
2024-02-20 15:07 ` [FFmpeg-devel] [PATCH v2] " Jerome Martinez
2024-02-21 13:11 ` Tomas Härdin
2024-02-21 14:27 ` Jerome Martinez
2024-02-24 12:26 ` Tomas Härdin
2024-02-25 4:14 ` [FFmpeg-devel] [PATCH v3] " Jerome Martinez
2024-03-01 22:29 ` Tomas Härdin
2024-03-03 17:07 ` Jerome Martinez
2024-04-24 11:20 ` [FFmpeg-devel] [PATCH v2] " Jerome Martinez
2024-04-24 22:54 ` Tomas Härdin
2024-04-25 0:59 ` Michael Niedermayer
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