[FFmpeg-devel] [PATCH 2/2] doc/indevs: suggest ffmpeg -lavfi.

Nicolas George nicolas.george at normalesup.org
Sat Mar 16 17:18:48 CET 2013

Signed-off-by: Nicolas George <nicolas.george at normalesup.org>
 doc/indevs.texi |   10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/doc/indevs.texi b/doc/indevs.texi
index cc5d666..c9383b1 100644
--- a/doc/indevs.texi
+++ b/doc/indevs.texi
@@ -373,6 +373,16 @@ ffplay -f lavfi "movie=test.avi[out0];amovie=test.wav[out1]"
 @end itemize
+Note: with the @command{ffmpeg} command-line tool, the
+ at option{-filter_complex} or @option{-lavfi} option can be used to read from
+a filter graph in a slightly more efficient manner. For example, the
+following commands are mostly equivalent:
+ at example
+ffmpeg -f lavfi -i testsrc out.avi
+ffmpeg -lavfi testsrc out.avi
+ at end example
 @section libdc1394
 IIDC1394 input device, based on libdc1394 and libraw1394.

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