Vignesh Venkatasubramanian 54c488223b avformat/movenc: Add loop parameter to animated AVIF ...

The HEIF specification permits specifying the looping behavior of
animated sequences by using the EditList (elst) box. The track
duration will be set to the total duration of all the loops (or
infinite) and the duration of a single loop will be set in the edit
list box.

The default behavior is to loop infinitely.

Compliance verification:
* This was added in libavif recently [1] and the files produced by
  ffmpeg after this change have EditList boxes similar to the ones
  produced by libavif (and avifdec is able to parse the loop count as
  intended).
* ComplianceWarden is ok with the produced files.
* Chrome is able to play back the produced files.

[1] 4d2776a3af

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>

2023-01-13 20:03:36 +08:00

8.4 KiB

Raw Blame History

View Raw