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

[Paul B Mahol]

Signed-off-by: Paul B Mahol <onemda at gmail.com>
---
 doc/filters.texi | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/doc/filters.texi b/doc/filters.texi
index 3438308..c5c5d2a 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -3414,6 +3414,12 @@ 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 efect:
+ at example
+format=gray,geq=lum_expr='(p(X,Y)+(256-p(X-4,Y-4)))/2'
+ at end example
 @end itemize
 
 @section gradfun
-- 
1.7.11.2