On Sat, May 27, 2017 at 1:36 PM, Gyan <gyando...@gmail.com> wrote:
> It's weird, given those uses cases - overlays - to override the operand's
> native aspect ratio. I'd say, a design oversight, at least.

I agree. I'm not aware of any common workflow that you would have
subtitles (transparent PNGs or something) that would be the same AR as
the main video but not the same size (as evidence by the fact that
scale2ref is needed at all). Oh well. These additional
constants/variables should tackle that ticket without needing to
introduce overly specific special cases like the suggested keep-AR
flag.
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