On Sun, Feb 11, 2024 at 03:56:59PM -0300, James Almer wrote:
> Export tiles as streams, and the grid information as a Stream Group of type
> TILE_GRID.
> This also enables exporting other stream items like thumbnails, which may be
> present in non tiled HEIF images too.
> 
> Based on a patch by Swaraj Hota
> 
> Signed-off-by: James Almer <jamrial@gmail.com>
> ---
>  libavformat/avformat.c |   8 +
>  libavformat/avformat.h |   6 +
>  libavformat/dump.c     |   2 +
>  libavformat/internal.h |   5 +
>  libavformat/isom.h     |  16 +-
>  libavformat/mov.c      | 492 +++++++++++++++++++++++++++++++++++++----
>  6 files changed, 484 insertions(+), 45 deletions(-)

git dislikes this:

git am -3

Applying: avformat/mov: add support for tile HEIF still images
error: sha1 information is lacking or useless (libavformat/avformat.c).
error: could not build fake ancestor
Patch failed at 0001 avformat/mov: add support for tile HEIF still images
Use 'git am --show-current-patch' to see the failed patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".


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

If a bugfix only changes things apparently unrelated to the bug with no
further explanation, that is a good sign that the bugfix is wrong.