[FFmpeg-devel] [PATCH v2 3/5] avformat/movenc: implement writing of the btrt box

[Martin Storsjö]

On Mon, 21 Sep 2020, Jan Ekström wrote:

> This is utilized by various media ingests to figure out the bit
> rate of the content you are pushing towards it, so write it by
> default for video, audio and subtitle tracks. It is only mentioned
> for timed metadata sample descriptions in QTFF, so limit it only to
> ISOBMFF (MODE_MP4).
>
> Updates the FATE tests which have their results changed due to the
> 20 extra bytes being written per track.
> ---

Maybe mention in the commit message, that the box is only written if 
there's any sensible information to write into it?

Other than that, the updated patchset looks good to me - thanks!

// Martin