2.6.9
Filters
Audio
Video
Sinks
Audio
Video
Sources
Audio
Multimedia
Video
7.1
7.0.2
6.1.2
6.0.1
5.1.6
5.0.3
4.4.5
4.3.8
4.2.10
4.1.11
4.0.6
3.4.13
3.3.9
3.2.19
3.1.11
3.0.12
2.8.22
2.7.7
2.5.11
2.4.14
2.3.6
2.2.16
2.1.8
2.0.7
1.2.12
1.1.16
1.0.10
0.11.5
0.10.16
0.9.4
0.8.15
0.7.17
adelay Delay one or more audio channels.
aecho Apply echoing to the input audio.
aeval Modify an audio signal according to the specified expressions.
afade Apply fade-in/out effect to input audio.
aformat Set output format constraints for the input audio.
allpass Apply a two-pole all-pass filter with central frequency (in Hz) frequency, and filter-width width.
amerge Merge two or more audio streams into a single multi-channel stream.
amix Mixes multiple audio inputs into a single output.
anull Pass the audio source unchanged to the output.
apad Pad the end of an audio stream with silence.
aphaser Add a phasing effect to the input audio.
aresample Resample the input audio to the specified parameters, using the libswresample library.
asetnsamples Set the number of samples per each output audio frame.
asetrate Set the sample rate without altering the PCM data.
ashowinfo Show a line containing various information for each input audio frame.
astats Display time domain statistical information about the audio channels.
astreamsync Forward two audio streams and control the order the buffers are forwarded.
asyncts Synchronize audio data with timestamps by squeezing/stretching it and/or dropping samples/adding silence when needed.
atempo Adjust audio tempo.
atrim Trim the input so that the output contains one continuous subpart of the input.
bandpass Apply a two-pole Butterworth band-pass filter with central frequency frequency, and (3dB-point) band-width width.
bandreject Apply a two-pole Butterworth band-reject filter with central frequency frequency, and (3dB-point) band-width width.
bass 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 hi-fi’s tone-controls.
biquad Apply a biquad IIR filter with the given coefficients.
bs2b Bauer stereo to binaural transformation, which improves headphone listening of stereo audio records.
channelmap Remap input channels to new locations.
channelsplit Split each channel from an input audio stream into a separate output stream.
compand Compress or expand the audio’s dynamic range.
dcshift Apply a DC shift to the audio.
earwax Make audio easier to listen to on headphones.
equalizer Apply a two-pole peaking equalisation (EQ) filter.
flanger Apply a flanging effect to the audio.
highpass Apply a high-pass filter with 3dB point frequency.
join Join multiple input streams into one multi-channel stream.
ladspa Load a LADSPA (Linux Audio Developer’s Simple Plugin API) plugin.
lowpass Apply a low-pass filter with 3dB point frequency.
pan Mix channels with specific gain levels.
replaygain ReplayGain scanner filter.
resample Convert the audio sample format, sample rate and channel layout.
silencedetect Detect silence in an audio stream.
silenceremove Remove silence from the beginning, middle or end of the audio.
treble Boost or cut treble (upper) frequencies of the audio using a two-pole shelving filter with a response similar to that of a standard hi-fi’s tone-controls.
volume Adjust the input audio volume.
volumedetect Detect the volume of the input video.