[vlc-devel] Video Scaling Filter Problem

Jean-Baptiste Kempf jb at videolan.org
Tue Oct 25 20:50:03 CEST 2011

Hello Zhiqiang,

On Tue, Oct 25, 2011 at 10:34:16AM +0800, Zhiqiang Zhang wrote :
>               I am a VLC developer. When I use vlc player, I find different
> algorithm for Video Scaling Filter. But I can't find which code
> implement each algorithm. I hope that you can help me find the code. I need
> to optimize the algorithm.

When doing software scaling, VLC usually uses the swscale module, that
you can find in modules/video_filter/ folder. It depends on swscale,
that you can find in git://git.videolan.org/ffmpeg.git.

However, modifying swscale is quite hard... If you are doing GPU
filtering, as I think you are, you might want to use a simpler code for

Best Regards,

Jean-Baptiste Kempf
http://www.jbkempf.com/ - +33 672 704 734
Sent from my Electronic Device

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