[FFmpeg-cvslog] doc/filters: add quick emboss example

Paul B Mahol git at videolan.org
Fri Apr 12 11:47:53 CEST 2013


ffmpeg | branch: master | Paul B Mahol <onemda at gmail.com> | Thu Apr 11 18:27:31 2013 +0000| [ae8d435ba8bc3a7ead9b5c6ad6ce54b4cc8111af] | committer: Paul B Mahol

doc/filters: add quick emboss example

Signed-off-by: Paul B Mahol <onemda at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=ae8d435ba8bc3a7ead9b5c6ad6ce54b4cc8111af
---

 doc/filters.texi |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 6b4f553..cf3a3f0 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
+
+ at item
+Generate a quick emboss effect:
+ at example
+format=gray,geq=lum_expr='(p(X,Y)+(256-p(X-4,Y-4)))/2'
+ at end example
 @end itemize
 
 @section gradfun



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