FFmpeg 2.0.7
aconvert
Convert the input audio format to the specified formats.
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 a audio stream with silence, this can be used together with -shortest to extend audio streams to the same length as the video stream.
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.
channelmap
Remap input channels to new locations.
channelsplit
Split each channel in input audio stream into a separate output stream.
earwax
Make audio easier to listen to on headphones.
equalizer
Apply a two-pole peaking equalisation (EQ) filter.
highpass
Apply a high-pass filter with 3dB point frequency.
join
Join multiple input streams into one multi-channel stream.
lowpass
Apply a low-pass filter with 3dB point frequency.
pan
Mix channels with specific gain levels.
resample
Convert the audio sample format, sample rate and channel layout.
silencedetect
Detect silence in an audio stream.
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.