[FFmpeg-devel] [PATCH] avfilter/video: pick sar from link

[Paul B Mahol]

On 12/10/17, Nicolas George <george at nsup.org> wrote:
> Paul B Mahol (2017-12-10):
>> > "May need" is not always a good way of designing changes. It would be
>> > much better if you actually changed these filters at the same time to
>> > use it. That way you can be more sure that you did not mess things up in
>> > a subtle way.
>> Is changing inlink parameters valid at all?
>
> I do not understand the question.

See vf_aspect.c, it changes inlink parameters.

This patch is required for example if one change sar of first input
and that value
is not propagated to next links.