[FFmpeg-devel] [PATCH v6 12/12] avfilter/vf_scale: switch to new swscale API

[Niklas Haas]

On Thu, 14 Nov 2024 23:47:54 +0100 Michael Niedermayer <michael at niedermayer.cc> wrote:
> On Tue, Nov 12, 2024 at 10:50:46AM +0100, Niklas Haas wrote:
> > From: Niklas Haas <git at haasn.dev>
> >
> > Most logic from this filter has been co-opted into swscale itself,
> > allowing the resulting filter to be substantially simpler as it no
> > longer has to worry about context initialization, interlacing, etc.
> >
> > Sponsored-by: Sovereign Tech Fund
> > Signed-off-by: Niklas Haas <git at haasn.dev>
> > ---
> >  libavfilter/vf_scale.c | 354 +++++++++--------------------------------
> >  1 file changed, 72 insertions(+), 282 deletions(-)
>
> breaks:
> ./ffmpeg -i laraShadow_dl.flv  -alphablend checkerboard -qscale 2 -bitexact -t 0.5 -y file-alphablend-yuv420.avi
>
> any video with some transparency should work
> after the patch the video is all black

Fixed; alphablend flag was not correctly passed through.

>
> thx
> [...]
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> No great genius has ever existed without some touch of madness. -- Aristotle
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