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| author | Paul B Mahol <onemda@gmail.com> | 2013-04-11 18:27:31 +0000 |
|---|---|---|
| committer | Paul B Mahol <onemda@gmail.com> | 2013-04-12 09:47:41 +0000 |
| commit | ae8d435ba8bc3a7ead9b5c6ad6ce54b4cc8111af (patch) | |
| tree | f4532281326e2431b19930a421a3d4b205e4b013 | |
| parent | 04924bc923efeb55e76a8bd6867da6fb2db724dd (diff) | |
| download | ffmpeg-ae8d435ba8bc3a7ead9b5c6ad6ce54b4cc8111af.tar.gz | |
doc/filters: add quick emboss example
Signed-off-by: Paul B Mahol <onemda@gmail.com>
| -rw-r--r-- | doc/filters.texi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index 6b4f553a28..cf3a3f03c0 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -3388,6 +3388,12 @@ Generate a fancy enigmatic moving light: @example nullsrc=s=256x256,geq=random(1)/hypot(X-cos(N*0.07)*W/2-W/2\,Y-sin(N*0.09)*H/2-H/2)^2*1000000*sin(N*0.02):128:128 @end example + +@item +Generate a quick emboss effect: +@example +format=gray,geq=lum_expr='(p(X,Y)+(256-p(X-4,Y-4)))/2' +@end example @end itemize @section gradfun |