[FFmpeg-devel] [PATCH] avfilter: add sharpen_npp video filter

[Timo Rothenpieler]

On 30.09.2021 20:51, Roman Arzumanyan wrote:
> Thanks for review, Timo.
> 
> Please find revised patch attached.
> (de)interlacing is now removed, doc entry was added as well.

applied with a few minor amendments, thanks!


While testing this via "-vf scale_npp=format=yuv420p,sharpen_npp" I 
discovered a weird issue where the last line of pixels was pink/purple, 
apparently missing the luma plane.

This turned out to be a bug in scale_npp, which returned frames with a 
height of 1088 instead of 1080 for a 1080p source.
It was fairly simple to fix, and I also pushed that fix: 
http://git.videolan.org/?p=ffmpeg.git;a=commit;h=37745b49049d4dbb5aa4ea84bcc289ed511971f9
I'm just very surprised that nobody noticed this issue in such a long time.



Timo

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