--- a/video.rst	Tue Aug 23 01:29:53 2016 +0300
+++ b/video.rst	Wed Aug 24 00:16:20 2016 +0300
@@ -37,6 +37,14 @@
 
    $ ffmpeg -ss 600 -i $IN.avi -vframes 1 -s 320x240 $OUT.png
 
+Extract frames from video
+=========================
+
+Extract one frame per second::
+
+  $ ffmpeg -i $IN.avi -vf fps=1 image-%03d.png
+
+
 Playing 3d film
 ===============
 ::