[FFmpeg-devel] [PATCH v2 2/2] avformat/mov: re-allow zero sample sizes if that is not the default

[Chris Ribble]

On Sun, Dec 11, 2022 at 2:34 PM Chris Ribble <chris.ribble at resi.io> wrote:
>
> This looks great and I've confirmed it fixes the issue. I see the
> warning on STDERR about ignoring the trun box: "Ignoring trun box with
> zero sized samples", which is great.
>

Actually, this introduces a new issue when I try to transcode the
problematic mp4 and then segment it with the DASH muxer.

It appears that ignoring the trun box while reading the input affects
the segment alignment of the audio with the video.The durations jitter
around quite a bit and some of them are very long. The same problem
seems to exist whether I transcode or copy the audio.