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jeanlf edited this page Nov 28, 2019 · 8 revisions

HOME » Filters » Audio output

Audio output

Register name used to load filter: aout

This filter outputs a single uncompressed audio PID to a soundcard.

Options

drv (string): audio driver name
bnum (unsigned int, default: 2): number of audio buffers - 0 for auto
bdur (unsigned int, default: 100): total duration of all buffers in ms - 0 for auto. The longer the audio buffer is, the longer the audio latency will be (pause/resume). The quality of fast forward audio playback will also be degradated when using large audio buffers
threaded (boolean, default: true): force dedicated thread creation if sound card driver is not threaded
dur (fraction, default: 0): only play the specified duration
clock (boolean, default: true): hint audio clock for this stream (reports system time and CTS), for other filters to use
speed (number, default: 1.0): set playback speed. If speed is negative and start is 0, start is set to -1
start (number, default: 0.0): set playback start offset. Negative value means percent of media dur with -1 <=> dur
vol (unsigned int, default: 100, minmax: 0-100, updatable): set default audio volume, as a percentage between 0 and 100
pan (unsigned int, default: 50, minmax: 0-100, updatable): set stereo pan, as a percentage between 0 and 100, 50 being centered
buffer (unsigned int, default: 100): set buffer in ms

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Inspect packets (inspect)
Probe source (probe)
Compositor (compositor)
ISOBMFF/QT demuxer (mp4dmx)
MPEG-4 BIFS decoder (bifsdec)
MPEG-4 OD decoder (odfdec)
File input (fin)
BT/XMT/X3D loader (btplay)
HTTP input (httpin)
SVG loader (svgplay)
JPG/J2K/PNG/BMP reframer (rfimg)
PNG/JPG decoder (imgdec)
ADTS reframer (rfadts)
LATM reframer (rflatm)
MP3 reframer (rfmp3)
FAAD decoder (faad)
MAD decoder (maddec)
XVid decoder (xviddec)
OpenJPEG2000 decoder (j2kdec)
AC3 reframer (rfac3)
A52 decoder (a52dec)
AMR/EVRC reframer (rfamr)
OGG demuxer (oggdmx)
Vorbis decoder (vorbisdec)
Theora decoder (theoradec)
MPEG-2 TS demuxer (m2tsdmx)
UDP/TCP input (sockin)
OpenSVC decoder (osvcdec)
VideoToolBox decoder (vtbdec)
MPEG-4 LASeR decoder (lsrdec)
SAF demuxer (safdmx)
MPEG-DASH and HLS client (dashin)
CENC decryptor (cdcrypt)
CENC encryptor (cecrypt)
ISOBMFF/QT muxer (mp4mx)
QCP reframer (rfqcp)
H263 reframer (rfh263)
M1V/M2V/M4V reframer (rfmpgvid)
NHNT reader (nhntr)
NHML parser (nhmlr)
AVC/HEVC reframer (rfnalu)
MPEG PS demuxer (m2psdmx)
AVI demuxer (avidmx)
Subtitle loader (txtin)
TTXT/TX3G decoder (ttxtdec)
WebVTT decoder (vttdec)
RTP/RTSP/SDP input (rtpin)
File output (fout)
Raw AAC to LATM writer (uflatm)
ADTS writer (ufadts)
Media Reframer (reframer)
Stream to file (writegen)
AVC/HEVC to AnnexB writer (ufnalu)
QCP writer (writeqcp)
WebVTT writer (writevtt)
NHNT writer (nhntw)
NHML writer (nhmlw)
VobSub demuxer (vobsubdmx)
AVI muxer (avimx)
Audio output (aout)
M4V writer (ufm4v)
Audio resampler (resample)
Video output (vout)
Video crop (vcrop)
Video flip (vflip)
RAW video reframer (rfrawvid)
PCM reframer (rfpcm)
JPG encoder (jpgenc)
PNG encoder (pngenc)
Audio/Video rewinder (rewind)
Sources concatenator (flist)
MPEG-2 TS muxer (m2tsmx)
DASH and HLS segmenter (dasher)
HEVC tile aggregator (tileagg)
pipe input (pin)
pipe output (pout)
GSF Muxer (gsfmx)
GSF Demuxer (gsfdmx)
UDP/TCP output (sockout)
AV1/IVF/VP9 reframer (rfav1)
IVF/OBU/annexB writer (ufobu)
ATSC input (atscin)
RTP Streamer (rtpout)
RTSP Server (rtspout)
HTTP Server (httpout)
HEVC tile spliter (hevcsplit)
HEVC Tile merger (hevcmerge)
FLAC reframer (rfflac)
ProRes reframer (rfprores)
MPEG Transport Stream splitter (tssplit)
FFMPEG demuxer (ffdmx)
FFMPEG decoder (ffdec)
FFMPEG AV Capture (ffavin)
FFMPEG video rescaler (ffsws)
FFMPEG encoder (ffenc)
FFMPEG muxer (ffmx)
FFMPEG AVFilter (ffavf)
JavaScript filter (jsf)
OpenHEVC decoder (ohevcdec)

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