[FFmpeg-devel] [PATCH] lavu/opt: Mention that AVOptions is not reentrant

[Andrew Sayers]

On Wed, Jun 05, 2024 at 03:34:50PM +0200, Paul B Mahol wrote:
> On Wed, Jun 5, 2024 at 3:18 PM Andrew Sayers <ffmpeg-devel at pileofstuff.org>
> wrote:
> 
> > An external API developer might think they can use AVOptions to modify
> > values
> > during playback (e.g. putting a playback quality slider next to the volume
> > slider).  Make it clear that behaviour is not recommended.
> >
> 
> There are options that can be changed at runtime,
> And it works just fine.

How would an external developer know which options can be safely changed
(preferably including in future versions of FFmpeg) vs. ones where their tests
got lucky and happened not to trigger a read during a non-atomic write?