[FFmpeg-devel] [FFmpeg-cvslog] fftools/ffmpeg: add loopback decoding

[Gyan Doshi]

On 2024-03-13 12:57 pm, Anton Khirnov wrote:
> ffmpeg | branch: master | Anton Khirnov<anton at khirnov.net>  | Mon Feb 19 10:27:44 2024 +0100| [a9193f7b7d65aafa326e25571c6672636a8ee3d2] | committer: Anton Khirnov
>
> fftools/ffmpeg: add loopback decoding
...
> +E.g. the following example:
> +
> + at example
> +ffmpeg -i INPUT                                        \
> +  -map 0:v:0 -c:v libx264 -crf 45 -f null -            \
> +  -dec 0:0 -filter_complex '[0:v][dec:0]hstack[stack]' \
> +  -map '[stack]' -c:v ffv1 OUTPUT

Can you add an example showing the assignment of a specific decoder 
along with a lavc generic + private option to a loopbacked stream?

Are there any limitations to loopback decoding e.g. would a vpx w/alpha 
encode be decoded back to a alpha pix fmt?

Regards,
Gyan