[FFmpeg-devel] [EXTERNAL] [PATCH] [PATCH] libavformat/mov: Expose Quicktime poster_time value as metadata TAG.

[Bryce Newman]

Thank you for the feedback Anton.

I only care about this value being displayed when calling ffprobe, so does it make sense to do this in ffprobe.c or could this be added to the existing mov.c demuxer?

“demuxer-private AV_OPT_FLAG_EXPORT” is new territory for me, so was wondering if there some example of how the similar values could be added to allow ffprobe to stdout the value – perhaps some existing commit request that shows how to make use of exposing values using AV_OPT_FLAG_EXPORT?

Thank you for your time.


From: ffmpeg-devel <ffmpeg-devel-bounces at ffmpeg.org> on behalf of Anton Khirnov <anton at khirnov.net>
Date: Wednesday, July 13, 2022 at 5:19 AM
To: Bryce Chester Newman <ffmpegagent at gmail.com>, ffmpeg-devel at ffmpeg.org <ffmpeg-devel at ffmpeg.org>
Subject: Re: [FFmpeg-devel] [EXTERNAL] [PATCH] [PATCH] libavformat/mov: Expose Quicktime poster_time value as metadata TAG.
Quoting Bryce Newman (2022-07-12 19:20:17)
> Hello,
> Can someone please have a look at this patch request?
> Thank you in advance.

Metadata is intended for user-presentable strings, not structured
values.

The least bad way of exporting this I can think of is adding a
demuxer-private AV_OPT_FLAG_EXPORT option.

Also, avoid floating point - it is inexact.

--
Anton Khirnov
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