1 files changed, 22 insertions, 70 deletions
diff --git a/doc/libavfilter.texi b/doc/libavfilter.texi
index b452294a5f..4f82944d36 100644
--- a/doc/libavfilter.texi
+++ b/doc/libavfilter.texi
@@ -9,84 +9,36 @@
 
 @contents
 
-@chapter Introduction
+@chapter Description
+@c man begin DESCRIPTION
 
-Libavfilter is the filtering API of Libav. It is the substitute of the
-now deprecated 'vhooks' and started as a Google Summer of Code project.
+The libavfilter library provides a generic audio/video filtering
+framework containing several filters, sources and sinks.
 
-But note that there may still be serious bugs in the code and its API
-and ABI should not be considered stable yet!
+@c man end DESCRIPTION
 
-@chapter Tutorial
+@chapter See Also
 
-In libavfilter, it is possible for filters to have multiple inputs and
-multiple outputs.
-To illustrate the sorts of things that are possible, we can
-use a complex filter graph. For example, the following one:
+@ifhtml
+@url{ffmpeg.html,ffmpeg}, @url{ffplay.html,ffplay}, @url{ffprobe.html,ffprobe}, @url{ffserver.html,ffserver},
+@url{ffmpeg-filters.html,ffmpeg-filters},
+@url{libavutil.html,libavutil}, @url{libswscale.html,libswscale}, @url{libswresample.html,libswresample},
+@url{libavcodec.html,libavcodec}, @url{libavformat.html,libavformat}, @url{libavdevice.html,libavdevice}
+@end ifhtml
 
-@example
-input --> split --> fifo -----------------------> overlay --> output
-            |                                        ^
-            |                                        |
-            +------> fifo --> crop --> vflip --------+
-@end example
+@ifnothtml
+ffmpeg(1), ffplay(1), ffprobe(1), ffserver(1),
+ffmpeg-filters(1),
+libavutil(3), libswscale(3), libswresample(3), libavcodec(3), libavformat(3), libavdevice(3)
+@end ifnothtml
 
-splits the stream in two streams, sends one stream through the crop filter
-and the vflip filter before merging it back with the other stream by
-overlaying it on top. You can use the following command to achieve this:
+@include authors.texi
 
-@example
-./avconv -i input -vf "[in] split [T1], fifo, [T2] overlay=0:H/2 [out]; [T1] fifo, crop=iw:ih/2:0:ih/2, vflip [T2]" output
-@end example
+@ignore
 
-The result will be that in output the top half of the video is mirrored
-onto the bottom half.
+@setfilename libavfilter
+@settitle multimedia filtering library
 
-Video filters are loaded using the @var{-vf} option passed to
-avconv or to avplay. Filters in the same linear chain are separated by
-commas. In our example, @var{split, fifo, overlay} are in one linear
-chain, and @var{fifo, crop, vflip} are in another. The points where
-the linear chains join are labeled by names enclosed in square
-brackets. In our example, that is @var{[T1]} and @var{[T2]}. The magic
-labels @var{[in]} and @var{[out]} are the points where video is input
-and output.
-
-Some filters take in input a list of parameters: they are specified
-after the filter name and an equal sign, and are separated each other
-by a semicolon.
-
-There exist so-called @var{source filters} that do not have a video
-input, and we expect in the future some @var{sink filters} that will
-not have video output.
-
-@chapter graph2dot
-
-The @file{graph2dot} program included in the Libav @file{tools}
-directory can be used to parse a filter graph description and issue a
-corresponding textual representation in the dot language.
-
-Invoke the command:
-@example
-graph2dot -h
-@end example
-
-to see how to use @file{graph2dot}.
-
-You can then pass the dot description to the @file{dot} program (from
-the graphviz suite of programs) and obtain a graphical representation
-of the filter graph.
-
-For example the sequence of commands:
-@example
-echo @var{GRAPH_DESCRIPTION} | \
-tools/graph2dot -o graph.tmp && \
-dot -Tpng graph.tmp -o graph.png && \
-display graph.png
-@end example
-
-can be used to create and display an image representing the graph
-described by the @var{GRAPH_DESCRIPTION} string.
-
-@include filters.texi
+@end ignore
 
 @bye