[FFmpeg-devel] [PATCH] lavf/vf_stack: add keep_dar option for vstack and hstack

[Paul B Mahol]

>>
>> Keep DAR of which input i.e. what if the inputs have different DARs?
>
> I'm using it for comparing two same video quality, it's not general
> for all condition anyway.
>
>>
>> The user can already emulate this by cropping inputs befoehand.
> Yes, we can use the crop filter to get the same function, however the
> command line isn't very direct to use and difficult to recall.

Write scripts then.