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diff --git a/DOCS/man/af.rst b/DOCS/man/af.rst index 15bc3050e6..e632820811 100644 --- a/DOCS/man/af.rst +++ b/DOCS/man/af.rst @@ -96,25 +96,6 @@ Available filters are: If the input channel number is less than ``<minch>``, the filter will detach itself (default: 3). -``sweep[=speed]`` - Produces a sine sweep. - - ``<0.0-1.0>`` - Sine function delta, use very low values to hear the sweep. - -``sinesuppress[=freq:decay]`` - Remove a sine at the specified frequency. Useful to get rid of the 50/60 Hz - noise on low quality audio equipment. It only works on mono input. - - ``<freq>`` - The frequency of the sine which should be removed (in Hz) (default: - 50) - ``<decay>`` - Controls the adaptivity (a larger value will make the filter adapt to - amplitude and phase changes quicker, a smaller value will make the - adaptation slower) (default: 0.0001). Reasonable values are around - 0.001. - ``bs2b[=option1:option2:...]`` Bauer stereophonic to binaural transformation using libbs2b. Improves the headphone listening experience by making the sound similar to that from @@ -137,18 +118,6 @@ Available filters are: If ``fcut`` or ``feed`` options are specified together with a profile, they will be applied on top of the selected profile. -``hrtf[=flag]`` - Head-related transfer function: Converts multichannel audio to 2-channel - output for headphones, preserving the spatiality of the sound. - - ==== =================================== - Flag Meaning - ==== =================================== - m matrix decoding of the rear channel - s 2-channel matrix decoding - 0 no matrix decoding (default) - ==== =================================== - ``equalizer=g1:g2:g3:...:g10`` 10 octave band graphic equalizer, implemented using 10 IIR band-pass filters. This means that it works regardless of what type of audio is @@ -354,64 +323,6 @@ Available filters are: ``mpv '--af=format=channels=5.1' '--audio-channels=5.1'`` would always force remixing audio to 5.1 and output it like this. -``sub[=fc:ch]`` - Adds a subwoofer channel to the audio stream. The audio data used for - creating the subwoofer channel is an average of the sound in channel 0 and - channel 1. The resulting sound is then low-pass filtered by a 4th order - Butterworth filter with a default cutoff frequency of 60Hz and added to a - separate channel in the audio stream. - - .. warning:: - - Disable this filter when you are playing media with an LFE channel - (e.g. 5.1 surround sound), otherwise this filter will disrupt the sound - to the subwoofer. - - ``<fc>`` - cutoff frequency in Hz for the low-pass filter (20 Hz to 300 Hz) - (default: 60 Hz) For the best result try setting the cutoff frequency - as low as possible. This will improve the stereo or surround sound - experience. - ``<ch>`` - Determines the channel number in which to insert the sub-channel - audio. Channel number can be between 0 and 7 (default: 5). Observe - that the number of channels will automatically be increased to <ch> if - necessary. - - .. admonition:: Example - - ``mpv --af=sub=100:4 --audio-channels=5 media.avi`` - Would add a subwoofer channel with a cutoff frequency of 100 Hz to - output channel 4. - -``center`` - Creates a center channel from the front channels. May currently be low - quality as it does not implement a high-pass filter for proper extraction - yet, but averages and halves the channels instead. - - ``<ch>`` - Determines the channel number in which to insert the center channel. - Channel number can be between 0 and 7 (default: 5). Observe that the - number of channels will automatically be increased to ``<ch>`` if - necessary. - -``surround[=delay]`` - Decoder for matrix encoded surround sound like Dolby Surround. Some files - with 2-channel audio actually contain matrix encoded surround sound. - - ``<delay>`` - delay time in ms for the rear speakers (0 to 1000) (default: 20) This - delay should be set as follows: If d1 is the distance from the - listening position to the front speakers and d2 is the distance from - the listening position to the rear speakers, then the delay should be - set to 15ms if d1 <= d2 and to 15 + 5*(d1-d2) if d1 > d2. - - .. admonition:: Example - - ``mpv --af=surround=15 --audio-channels=4 media.avi`` - Would add surround sound decoding with 15 ms delay for the sound to - the rear speakers. - ``delay[=[ch1,ch2,...]]`` Delays the sound to the loudspeakers such that the sound from the different channels arrives at the listening position simultaneously. It is @@ -440,36 +351,6 @@ Available filters are: Would delay front left and right by 10.5 ms, the two rear channels and the subwoofer by 0 ms and the center channel by 7 ms. -``export=mmapped_file:nsamples]`` - Exports the incoming signal to other processes using memory mapping - (``mmap()``). Memory mapped areas contain a header:: - - int nch /* number of channels */ - int size /* buffer size */ - unsigned long long counter /* Used to keep sync, updated every time - new data is exported. */ - - The rest is payload (non-interleaved) 16-bit data. - - ``<mmapped_file>`` - File to map data to (required) - ``<nsamples>`` - number of samples per channel (default: 512). - - .. admonition:: Example - - ``mpv --af=export=/tmp/mpv-af_export:1024 media.avi`` - Would export 1024 samples per channel to ``/tmp/mpv-af_export``. - -``extrastereo[=mul]`` - (Linearly) increases the difference between left and right channels which - adds some sort of "live" effect to playback. - - ``<mul>`` - Sets the difference coefficient (default: 2.5). 0.0 means mono sound - (average of both channels), with 1.0 sound will be unchanged, with - -1.0 left and right channels will be swapped. - ``drc[=method:target]`` Applies dynamic range compression. This maximizes the volume by compressing the audio signal's dynamic range. (Formerly called ``volnorm``.) @@ -493,45 +374,6 @@ Available filters are: This filter can cause distortion with audio signals that have a very large dynamic range. -``ladspa=file:label:[<control0>,<control1>,...]`` - Load a LADSPA (Linux Audio Developer's Simple Plugin API) plugin. This - filter is reentrant, so multiple LADSPA plugins can be used at once. - - ``<file>`` - Specifies the LADSPA plugin library file. - - .. note:: - - See also the note about the ``LADSPA_PATH`` variable in the - `ENVIRONMENT VARIABLES`_ section. - ``<label>`` - Specifies the filter within the library. Some libraries contain only - one filter, but others contain many of them. Entering 'help' here - will list all available filters within the specified library, which - eliminates the use of 'listplugins' from the LADSPA SDK. - ``[<control0>,<control1>,...]`` - Controls are zero or more ``,`` separated floating point values that - determine the behavior of the loaded plugin (for example delay, - threshold or gain). - In verbose mode (add ``-v`` to the mpv command line), all - available controls and their valid ranges are printed. This eliminates - the use of 'analyseplugin' from the LADSPA SDK. - Note that ``,`` is already used by the option parser to separate - filters, so you must quote the list of values with ``[...]`` or - similar. - - .. admonition:: Example - - ``mpv --af=ladspa='/usr/lib/ladspa/delay.so':delay_5s:[0.5,0.2] media.avi`` - Does something. - -``karaoke`` - Simple voice removal filter exploiting the fact that voice is usually - recorded with mono gear and later 'center' mixed onto the final audio - stream. Beware that this filter will turn your signal into mono. Works - well for 2 channel tracks; do not bother trying it on anything but 2 - channel stereo. - ``scaletempo[=option1:option2:...]`` Scales audio tempo without altering pitch, optionally synced to playback speed (default). |