[FFmpeg-devel] SWSCALE: Colorspace conversion for images

Michael Niedermayer michaelni at gmx.at
Tue Mar 29 23:40:58 CEST 2011

On Tue, Mar 29, 2011 at 01:58:57PM -0700, Frank Barchard wrote:
> Bump swscaler width limitation from 5120 to 16384.
> Advantage: images (ie jpeg) are often larger than 5120 these days.
>  5120x2880 is about 15 megapixels
> Disadvantage: slightly slower
> no scaling
> timex ffmpeg -y -i tulip2.mp4 tulip2.yuv
> timex 8866.21ms
> scaling
> C:\ffwork>timex ffmpeg -y -i tulip2.mp4 -s 1272x724 tulip2.yuv
> timex 23633.13ms with VOFW 5120
> timex 26246.90ms with VOFW 16384

could you try 21504 instead of 16384 ?

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

When the tyrant has disposed of foreign enemies by conquest or treaty, and
there is nothing more to fear from them, then he is always stirring up
some war or other, in order that the people may require a leader. -- Plato
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