[FFmpeg-user] Vertically flipped mp4 video

[Ulf Zibis]

Am 28.06.22 um 14:59 schrieb Moritz Barsnick:
> Metadata flags do exist for rotating, but not for flipping. Thus this
> cannot be done without re-encoding.
I'm irritated. Here I can read, that it exists:
https://ffmpeg.org/ffmpeg-all.html#toc-h264_005fmetadata

> Even for rotation, the player needs to understand the flag. This is not
> the case for all players.

Thanks for the hint!

-Ulf