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doc/filters: use common options introduction string.

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Clément Bœsch 2013-04-13 20:09:22 +02:00
parent 2b44195fc9
commit 8137ea358c
1 changed files with 10 additions and 42 deletions
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doc/filters.texi
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@ -321,10 +321,7 @@ Apply a two-pole all-pass filter with central frequency (in Hz)
An all-pass filter changes the audio's frequency to phase relationship An all-pass filter changes the audio's frequency to phase relationship
without changing its frequency to amplitude relationship. without changing its frequency to amplitude relationship.
The filter accepts parameters as a list of @var{key}=@var{value} The filter accepts the following options:
pairs, separated by ":".
A description of the accepted parameters follows.
@table @option @table @option
@item frequency, f @item frequency, f
@ -353,10 +350,7 @@ Apply a high-pass filter with 3dB point frequency.
The filter can be either single-pole, or double-pole (the default). The filter can be either single-pole, or double-pole (the default).
The filter roll off at 6dB per pole per octave (20dB per pole per decade). The filter roll off at 6dB per pole per octave (20dB per pole per decade).
The filter accepts parameters as a list of @var{key}=@var{value} The filter accepts the following options:
pairs, separated by ":".
A description of the accepted parameters follows.
@table @option @table @option
@item frequency, f @item frequency, f
@ -390,10 +384,7 @@ Apply a low-pass filter with 3dB point frequency.
The filter can be either single-pole or double-pole (the default). The filter can be either single-pole or double-pole (the default).
The filter roll off at 6dB per pole per octave (20dB per pole per decade). The filter roll off at 6dB per pole per octave (20dB per pole per decade).
The filter accepts parameters as a list of @var{key}=@var{value} The filter accepts the following options:
pairs, separated by ":".
A description of the accepted parameters follows.
@table @option @table @option
@item frequency, f @item frequency, f
@ -427,10 +418,7 @@ Boost or cut the bass (lower) frequencies of the audio using a two-pole
shelving filter with a response similar to that of a standard shelving filter with a response similar to that of a standard
hi-fi's tone-controls. This is also known as shelving equalisation (EQ). hi-fi's tone-controls. This is also known as shelving equalisation (EQ).
The filter accepts parameters as a list of @var{key}=@var{value} The filter accepts the following options:
pairs, separated by ":".
A description of the accepted parameters follows.
@table @option @table @option
@item gain, g @item gain, g
@ -505,10 +493,7 @@ Boost or cut treble (upper) frequencies of the audio using a two-pole
shelving filter with a response similar to that of a standard shelving filter with a response similar to that of a standard
hi-fi's tone-controls. This is also known as shelving equalisation (EQ). hi-fi's tone-controls. This is also known as shelving equalisation (EQ).
The filter accepts parameters as a list of @var{key}=@var{value} The filter accepts the following options:
pairs, separated by ":".
A description of the accepted parameters follows.
@table @option @table @option
@item gain, g @item gain, g
@ -546,10 +531,7 @@ The @var{csg} option selects a constant skirt gain (peak gain = Q)
instead of the default: constant 0dB peak gain. instead of the default: constant 0dB peak gain.
The filter roll off at 6dB per octave (20dB per decade). The filter roll off at 6dB per octave (20dB per decade).
The filter accepts parameters as a list of @var{key}=@var{value} The filter accepts the following options:
pairs, separated by ":".
A description of the accepted parameters follows.
@table @option @table @option
@item frequency, f @item frequency, f
@ -581,10 +563,7 @@ Apply a two-pole Butterworth band-reject filter with central
frequency @var{frequency}, and (3dB-point) band-width @var{width}. frequency @var{frequency}, and (3dB-point) band-width @var{width}.
The filter roll off at 6dB per octave (20dB per decade). The filter roll off at 6dB per octave (20dB per decade).
The filter accepts parameters as a list of @var{key}=@var{value} The filter accepts the following options:
pairs, separated by ":".
A description of the accepted parameters follows.
@table @option @table @option
@item frequency, f @item frequency, f
@ -623,10 +602,7 @@ filters) that at all other frequencies is unchanged.
In order to produce complex equalisation curves, this filter can In order to produce complex equalisation curves, this filter can
be given several times, each with a different central frequency. be given several times, each with a different central frequency.
The filter accepts parameters as a list of @var{key}=@var{value} The filter accepts the following options:
pairs, separated by ":".
A description of the accepted parameters follows.
@table @option @table @option
@item frequency, f @item frequency, f
@ -4826,14 +4802,7 @@ Scale (resize) the input video, using the libswscale library.
The scale filter forces the output display aspect ratio to be the same The scale filter forces the output display aspect ratio to be the same
of the input, by changing the output sample aspect ratio. of the input, by changing the output sample aspect ratio.
This filter accepts a list of named options in the form of The filter accepts the following options:
@var{key}=@var{value} pairs separated by ":". If the key for the first
two options is not specified, the assumed keys for the first two
values are @code{w} and @code{h}. If the first option has no key and
can be interpreted like a video size specification, it will be used
to set the video size.
A description of the accepted options follows.
@table @option @table @option
@item width, w @item width, w
@ -5772,8 +5741,7 @@ Buffer video frames, and make them available to the filter chain.
This source is mainly intended for a programmatic use, in particular This source is mainly intended for a programmatic use, in particular
through the interface defined in @file{libavfilter/vsrc_buffer.h}. through the interface defined in @file{libavfilter/vsrc_buffer.h}.
It accepts a list of options in the form of @var{key}=@var{value} pairs This source accepts the following options:
separated by ":". A description of the accepted options follows.
@table @option @table @option