[FFmpeg-devel] [PATCH 1/1] avformat/movenc: fix HEVC fmp4 HLS init segment for Apple playback

[Michael Niedermayer]

On Mon, Jul 21, 2025 at 05:01:47PM -0400, David McElroy wrote:
> HEVC fmp4 HLS video produced by ffmpeg is currently unplayable on Apple
> software (Safari, QuickTime, AVFoundation).
> 
> This is caused by an empty sdtp atom being erroneously written to the
> fmp4 init segment. The `has_disposable` flag can be set for a track
> with B-frames, but the init segment contains no actual frames
> (track->entry == 0). Writing an sdtp atom in this case is incorrect
> and causes Apple's parsers to reject the file.
> 
> This patch fixes the issue by ensuring the sdtp atom is only written
> if track->entry is non-zero.
> 
> A similar patch was proposed in November 2023 by Jay Zhang,
> but it was never merged.
> 
> Link: https://lists.ffmpeg.org/pipermail/ffmpeg-devel/2023-November/317173.html
> Co-authored-by: Jay Zhang <wangyoucao577 at gmail.com>
> Signed-off-by: David McElroy <david at mcelroy.online>
> ---
>  libavformat/movenc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

will apply

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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