Bug#966059: ffmpeg: Please enable zscale filter

[Sebastian Ramacher <sramacher@debian.org>]

On 2021-07-15 12:48:53, guerrarob@alice.it wrote:
> I also would like to use zscale which does not require manual passing of
> colorspace options such as
> |-pix_fmt|, |-color_range|, |-colorspace|, |-color_primaries|, and
> |-color_trc|
> 
> Default scaling does not account for the above flags, producing in some
> cases washed out colors, see e.g.:
> https://video.stackexchange.com/questions/28889/ffmpeg-does-not-preserve-colors-after-resizing/
> https://video.stackexchange.com/questions/32383/ffmpeg-vf-scale-shifts-colors-to-washed-out
> 
> Presently libzimg2 is packaged in debian repositories, so it can be linked.

The ffmpeg version currently available in experimental has zimg enabled.

Cheers
-- 
Sebastian Ramacher