[FFmpeg-devel] [PATCH 1/3] libavfilter/scale2ref: Add constants for the non-ref input

[Gyan]

On Sat, May 27, 2017 at 9:41 PM, Kevin Mark <kmark937 at gmail.com> wrote:

> I wouldn't be comfortable calling this a bug fix (or that ticket being a
> bug/defect) considering the current functionality, while not particularly
> intuitive, is consistent with the documentation.
>

The commit message for this filter says,

"This filter can be used to scale one stream to match another or based on
another, useful to scale subtitles or other things to be overlayed"

It's weird, given those uses cases - overlays - to override the operand's
native aspect ratio. I'd say, a design oversight, at least.