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doc: remove mention of fifo filter in the introduction.

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It's confusing and not necessary, especially in the introduction.
This commit is contained in:
Clément Bœsch 2012-12-19 03:38:57 +01:00
parent 022e118e3f
commit 80a9297b71
1 changed files with 7 additions and 7 deletions
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14
doc/filters.texi
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@ -16,10 +16,10 @@ To illustrate the sorts of things that are possible, we can
use a complex filter graph. For example, the following one:
@example
input --> split --> fifo -----------------------> overlay --> output
| ^
| |
+------> fifo --> crop --> vflip --------+
input --> split ---------------------> overlay --> output
| ^
| |
+-----> crop --> vflip -------+
@end example
splits the stream in two streams, sends one stream through the crop filter
@ -27,7 +27,7 @@ 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
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
ffmpeg -i input -vf "[in] split [T1], [T2] overlay=0:H/2 [out]; [T1] 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
@ -35,8 +35,8 @@ onto the bottom half.
Filters are loaded using the @var{-vf} or @var{-af} option passed to
@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
chain are separated by commas. In our example, @var{split,
overlay} are in one linear chain, and @var{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 special labels @var{[in]} and @var{[out]} are the points