From: Benjamin Larsson <banan@ludd.ltu.se>
Date: Wed, 30 Aug 2006 18:28:41 +0000 (+0000)
Subject: PPM vhook documentation, by Victor Paesa.
X-Git-Tag: v0.5~11978
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=56d2d2d01a96ed801517f826285f4c9877f46db3;p=platform%2Fupstream%2Flibav.git

PPM vhook documentation, by Victor Paesa.
wzrlpy at arsystel dot com

Originally committed as revision 6132 to svn://svn.ffmpeg.org/ffmpeg/trunk
---

diff --git a/doc/hooks.texi b/doc/hooks.texi
index a9c1255..bd817e7 100644
--- a/doc/hooks.texi
+++ b/doc/hooks.texi
@@ -45,5 +45,16 @@ This allows a caption to be placed onto each frame. It supports inserting the
 time and date. By using the imlib functions, it would be easy to add your own
 graphical logo, add a frame/border, etc.
 
+@section ppm.c
+
+It's basically a launch point for a PPM pipe, so you can use any
+executable (or script) which consumes a PPM on stdin and produces a PPM
+on stdout (and flushes each frame).
+
+Usage example:
+
+@example
+ffmpeg -i input -vhook "/path/to/ppm.so some-ppm-filter args" output
+@end example
 
 @bye