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diff --git a/doc/libavfilter.texi b/doc/libavfilter.texi index 5bb5235898..32bf10fd9a 100644 --- a/doc/libavfilter.texi +++ b/doc/libavfilter.texi @@ -71,6 +71,34 @@ 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 FFmpeg @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. + @chapter Available video filters When you configure your FFmpeg build, you can disable any of the |