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Diffstat (limited to 'doc/libavfilter.texi')
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1 files changed, 12 insertions, 12 deletions
diff --git a/doc/libavfilter.texi b/doc/libavfilter.texi index b452294..06d9f13 100644 --- a/doc/libavfilter.texi +++ b/doc/libavfilter.texi @@ -11,11 +11,11 @@ @chapter Introduction -Libavfilter is the filtering API of Libav. It is the substitute of the +Libavfilter is the filtering API of FFmpeg. It is the substitute of the now deprecated 'vhooks' and started as a Google Summer of Code project. -But note that there may still be serious bugs in the code and its API -and ABI should not be considered stable yet! +Audio filtering integration into the main FFmpeg repository is a work in +progress, so audio API and ABI should not be considered stable yet. @chapter Tutorial @@ -36,20 +36,20 @@ 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: @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 +ffmpeg -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 The result will be that in output the top half of the video is mirrored onto the bottom half. 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. +@command{ffmpeg} or to @command{ffplay}. 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 @@ -61,7 +61,7 @@ not have video output. @chapter graph2dot -The @file{graph2dot} program included in the Libav @file{tools} +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. |
