Man /
AUDIO OUTPUT DRIVERS
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Audio output drivers are interfaces to different audio output facilities. The syntax is:
- -ao <driver1[:suboption1[=value]:...],driver2,...[,]>
- Specify a priority list of audio output drivers to be used.
If the list has a trailing ’,’ MPlayer will fall back on drivers not contained in the list. Suboptions are optional and can mostly be omitted.
NOTE: See -ao help for a list of compiled-in audio output drivers.
EXAMPLE:
- -ao alsa,oss,
- Try the ALSA driver, then the OSS driver, then others.
- -ao alsa:noblock:device=hw=0.3
- Sets noblock-mode and the device-name as first card, fourth device.
Available audio output drivers are:
alsa †
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ALSA 0.9/1.x audio output driver
- noblock
- Sets noblock-mode.
- device=<device>
- Sets the device name. Replace any ’,’ with ’.’ and any ’:’ with ’=’ in the ALSA device name. Make sure you do not set this when you want hwac3 output via S/PDIF, unless you really know how to set it correctly.
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alsa5 †
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ALSA 0.5 audio output driver
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oss †
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OSS audio output driver
- <dsp-device>
- Sets the audio output device (default: /dev/dsp).
- <mixer-device>
- Sets the audio mixer device (default: /dev/mixer).
- <mixer-channel>
- Sets the audio mixer channel (default: pcm).
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sdl †
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highly platform independent SDL (Simple Directmedia Layer) library audio output driver
- <driver>
- Explicitly choose the SDL audio driver to use (default: let SDL choose).
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arts †
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audio output through the aRts daemon
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esd †
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audio output through the ESD daemon
- <server>
- Explicitly choose the ESD server to use (default: localhost).
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jack †
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audio output through JACK (Jack Audio Connection Kit)
- port=<name>
- Connects to the ports with the given name (default: physical ports).
- name=<client
- Client name that is passed to JACK (default: MPlayer [<PID>]). Useful if you want to have certain connections established automatically.
- (no)estimate
- Estimate the audio delay, supposed to make the video playback smoother (default: enabled).
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nas †
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audio output through NAS
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macosx (Mac OS X only) †
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native Mac OS X audio output driver
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sgi (SGI only) †
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native SGI audio output driver
- <output device name>
- Explicitly choose the output device/interface to use (default: system-wide default). For example, ’Analog Out’ or ’Digital Out’.
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sun (Sun only) †
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native Sun audio output driver
- <device>
- Explicitly choose the audio device to use (default: /dev/audio).
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win32 (Windows only) †
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native Windows waveout audio output driver
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dsound (Windows only) †
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DirectX DirectSound audio output driver
- device=<devicenum>
- Sets the device number to use. Playing a file with −v will show a list of available devices.
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dxr2 (also see −dxr2) (DXR2 only) †
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Creative DXR2 specific output driver
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ivtv (IVTV only) †
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IVTV specific MPEG audio output driver. Works with −ac hwmpa only.
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mpegpes (DVB only) †
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Audio output driver for DVB cards that writes the output to an MPEG-PES file if no DVB card is installed.
- card=<1−4>
- DVB card to use if more than one card is present.
- file=<filename>
- output filename
- null
- Produces no audio output but maintains video playback speed. Use −nosound for benchmarking.
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pcm †
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raw PCM/wave file writer audio output
- (no)waveheader
- Include or do not include the wave header (default: included). When not included, raw PCM will be generated.
- file=<filename>
- Write the sound to <filename> instead of the default audiodump.wav. If nowaveheader is specified, the default is audiodump.pcm.
- fast
- Try to dump faster than realtime. Make sure the output does not get truncated (usually with "Too many video packets in buffer" message). It is normal that you get a "Your system is too SLOW to play this!" message.
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plugin †
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plugin audio output driver
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