Audio
- abuffer
- Buffer audio frames, and make them available to the filter chain.
- aevalsrc
- Generate an audio signal specified by an expression.
- anullsrc
- Null audio source, return unprocessed audio frames.
- flite
- Synthesize a voice utterance using the libflite library.
- sine
- Generate an audio signal made of a sine wave with amplitude 1/8.
Video
- buffer
- Buffer video frames, and make them available to the filter chain.
- cellauto
- Create a pattern generated by an elementary cellular automaton.
- mandelbrot
- Generate a Mandelbrot set fractal, and progressively zoom towards the point specified with start_x and start_y.
- mptestsrc
- Generate various test patterns, as generated by the MPlayer test filter.
- frei0r_src
- Provide a frei0r source.
- life
- Generate a life pattern.
- color
- The color source provides an uniformly colored input.
- haldclutsrc
- The haldclutsrc source provides an identity Hald CLUT.
- nullsrc
- The nullsrc source returns unprocessed video frames.
- rgbtestsrc
- The rgbtestsrc source generates an RGB test pattern useful for
detecting RGB vs BGR issues.
- smptebars
- The smptebars source generates a color bars pattern, based on
the SMPTE Engineering Guideline EG 1-1990.
- smptehdbars
- The smptehdbars source generates a color bars pattern, based on
the SMPTE RP 219-2002.
- testsrc
- The testsrc source generates a test video pattern, showing a
color pattern, a scrolling gradient and a timestamp.
Multimedia
- avectorscope
- Convert input audio to a video output, representing the audio vector scope.
- concat
- Concatenate audio and video streams, joining them together one after the other.
- ebur128
- EBU R128 scanner filter.
- interleave
- interleave works with video inputs, ainterleave with audio.
- ainterleave
- interleave works with video inputs, ainterleave with audio.
- perms
- Set read/write permissions for the output frames.
- aperms
- Set read/write permissions for the output frames.
- select
- Select frames to pass in output.
- aselect
- Select frames to pass in output.
- sendcmd
- sendcmd must be inserted between two video filters,
asendcmd must be inserted between two audio filters, but apart
from that they act the same way.
- asendcmd
- sendcmd must be inserted between two video filters,
asendcmd must be inserted between two audio filters, but apart
from that they act the same way.
- setpts
- setpts works on video frames, asetpts on audio frames.
- asetpts
- setpts works on video frames, asetpts on audio frames.
- settb
- Set the timebase to use for the output frames timestamps.
- asettb
- Set the timebase to use for the output frames timestamps.
- showspectrum
- Convert input audio to a video output, representing the audio frequency spectrum.
- showwaves
- Convert input audio to a video output, representing the samples waves.
- split
- asplit works with audio input, split with video.
- asplit
- asplit works with audio input, split with video.
- zmq
- zmq and azmq work as a pass-through filters.
- azmq
- zmq and azmq work as a pass-through filters.
- amovie
- This is the same as movie source, except it selects an audio stream by default.
- movie
- Read audio and/or video stream(s) from a movie container.