[Libav-user] No metadata in adts container using libavformat API

[Igor Serganov]

Hello Carl,

Also worth mentioning, that during runtime ‘ av_dump_format’ displays
correctly all changes made to the format container metadata.

Thank you,

Kind regards,

Igor Serganov

On Mon, 28 Nov 2022 at 18:30, Igor Serganov <iserganoff at gmail.com> wrote:

> Hello Carl,
>
>
> Thank you for your reply. I think now I have realised that I have 2 issues
> in my scenario:
>
> 1. The code attached (metadata.cpp) writes perfectly some static header
> during mp3 => mp3 transcoding, however if I use ADTS muxer with AAC output
> stream inside, metadata is not written.
> 2. Since one of the tags contains start time of the segment, I need to
> update its value multiple times (as many as I have 10s segments during
> transcoding) after calling avformat_alloc_output_context2 and
> avformat_write_header .  That doesn’t work neither for mp3 nor for adts
> muxer.
>
>
>
> On 27 Nov 2022, at 17:00, Carl Eugen Hoyos <ceffmpeg at gmail.com> wrote:
>
> Am Sa., 26. Nov. 2022 um 19:08 Uhr schrieb Igor Serganov <
> iserganoff at gmail.com>:
>
>
> Hello team!
>
> I would appreciate your help on the following issue.
>
>
> I believe you should provide code that can be compiled stand-alone.
>
> It seems very unlikely that you found a bug, much more likely that
> something is missing in your code (assuming it works with ffmpeg,
> the application).
>
> Carl Eugen
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