[FFmpeg-devel] [PATCH] avformat/mov: don't read duration from mvhd atom

[Michael Niedermayer]

On Mon, Aug 15, 2022 at 08:14:42PM -0300, James Almer wrote:
> This duration is equal to the longest duration in all track's tkhd atoms, which
> may be comprised of the sum of all edit lists in each track. Empty edit lists
> in tracks represent start_time, and the actual media duration is stored in the
> mdhd atom.
> This change lets the generic demux code derive the longest track duration taken
> from mdhd atoms, so the correct duration and start_time combination will be
> reported.
> 
> Should fix ticket #9775.
> 
> Signed-off-by: James Almer <jamrial at gmail.com>
> ---
>  libavformat/mov.c                            | 4 ----
>  tests/ref/fate/gaplessenc-itunes-to-ipod-aac | 2 +-
>  2 files changed, 1 insertion(+), 5 deletions(-)

No idea if its a bad or good change but this changes the output for:
./ffmpeg -f concat -i ~/tickets/3108/concatfile.txt -codec copy -bitexact /tmp/3108.avi

thx

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

No human being will ever know the Truth, for even if they happen to say it
by chance, they would not even known they had done so. -- Xenophanes
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