[FFmpeg-devel] [PATCH 1/2] ffmpeg: add display_{rotation, hflip, vflip} options

[Jan Ekström]

On Thu, May 19, 2022, 07:21 Gyan Doshi <ffmpeg at gyani.pro> wrote:

>
>
> On 2022-05-18 11:34 pm, Jan Ekström wrote:
> > This enables overriding the rotation as well as horizontal/vertical
> > flip state of a specific video stream on either the input or output
> > side.
>
> Since rotation, flip and scale are stored in a single data structure,
> how about a single option i.e. -display "rotate=90,flip=hv,scale=2"
>

I did think about that, and I even implemented AVDict based options for
ffmpeg.c in a branch. But then pretty much got tired of lack of AVOption
automation (f.ex. for the flip flagging etc), and decided that since these
are relatively basic and simple, the non-generic option for this could be
just three options in the initial submission.

Jan