From: "Tomas Härdin via ffmpeg-devel" <ffmpeg-devel@ffmpeg.org>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Cc: "Tomas Härdin" <git@haerdin.se>
Subject: [FFmpeg-devel] Re: [PATCH] avformat/mxfenc: fix SMPTE 436M UL for ANC
Date: Thu, 18 Sep 2025 22:36:32 +0200
Message-ID: <e0380454d288ae442e14ffff096ff81570921d9c.camel@haerdin.se> (raw)
In-Reply-To: <CAP47Nu_qDhFXzO9o=pFzFk_JCW9rdGdVWyht-9vgWgK+sD0vCg@mail.gmail.com>
mån 2025-09-15 klockan 10:26 -0300 skrev Helmuth Schmitz via ffmpeg-
devel:
> The first UL of the SMPTE 436M descriptor triple in mxfenc.c used
> 0x0a
> instead of 0x09. This caused generated MXF files without "MXF-GC
> Generic
> ANC
> Data Mapping" essence container descriptor.
>
> This patch corrects the UL to align with SMPTE RP224, so that the ANC
> descriptor is properly recognized.
>
> Tested with MXFInspect and Adobe Premiere:
> - Without the patch, the stream is not identified as ANC.
> - With the patch, the ANC data is correctly detected as "Generic ANC
> Data".
Sounds OK. We obviously shouldn't mimic broken muxers, especially when
there's a standard saying what ULs to use
/Tomas
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prev parent reply other threads:[~2025-09-18 20:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-15 13:26 [FFmpeg-devel] " Helmuth Schmitz via ffmpeg-devel
2025-09-15 14:40 ` Nicolas Gaullier via ffmpeg-devel
2025-09-15 17:44 ` [FFmpeg-devel] " Helmuth Schmitz via ffmpeg-devel
2025-09-18 20:36 ` Tomas Härdin via ffmpeg-devel [this message]
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