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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: use a complex filter graph. For example, the following one:
@example @example
input --> split --> fifo -----------------------> overlay --> output input --> split ---------------------> overlay --> output
| ^ | ^
| | | |
+------> fifo --> crop --> vflip --------+ +-----> crop --> vflip -------+
@end example @end example
splits the stream in two streams, sends one stream through the crop filter 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: overlaying it on top. You can use the following command to achieve this:
@example @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 @end example
The result will be that in output the top half of the video is mirrored 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 Filters are loaded using the @var{-vf} or @var{-af} option passed to
@command{ffmpeg} or to @command{ffplay}. Filters in the same linear @command{ffmpeg} or to @command{ffplay}. Filters in the same linear
chain are separated by commas. In our example, @var{split, fifo, chain are separated by commas. In our example, @var{split,
overlay} are in one linear chain, and @var{fifo, crop, vflip} are in overlay} are in one linear chain, and @var{crop, vflip} are in
another. The points where the linear chains join are labeled by names another. The points where the linear chains join are labeled by names
enclosed in square brackets. In our example, that is @var{[T1]} and 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 @var{[T2]}. The special labels @var{[in]} and @var{[out]} are the points