.. _audio_outputs: AUDIO OUTPUT DRIVERS ==================== Audio output drivers are interfaces to different audio output facilities. The syntax is: --ao= Specify a priority list of audio output drivers to be used. If the list has a trailing ',' mpv 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 ALSA 0.9/1.x audio output driver noblock Sets noblock-mode. device= Sets the device name. Replace any ',' with '.' and any ':' with '=' in the ALSA device name. For hwac3 output via S/PDIF, use an "iec958" or "spdif" device, unless you really know how to set it correctly. oss OSS audio output driver Sets the audio output device (default: ``/dev/dsp``). Sets the audio mixer device (default: ``/dev/mixer``). Sets the audio mixer channel (default: pcm). jack audio output through JACK (Jack Audio Connection Kit) port= Connects to the ports with the given name (default: physical ports). name= Client name that is passed to JACK (default: mpv []). 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). (no-)autostart Automatically start jackd if necessary (default: disabled). Note that this seems unreliable and will spam stdout with server messages. coreaudio (Mac OS X only) native Mac OS X audio output driver device_id= ID of output device to use (0 = default device) help List all available output devices with their IDs. openal Experimental OpenAL audio output driver pulse PulseAudio audio output driver [][:] Specify the host and optionally output sink to use. An empty string uses a local connection, "localhost" uses network transfer (most likely not what you want). portaudio PortAudio audio output driver. This works on all platforms, and has extensive MS Windows support. device Specify the subdevice to use. Giving ``help`` as device name lists all devices found by PortAudio. Devices can be given as numeric values, starting from ``1``. dsound (Windows only) DirectX DirectSound audio output driver device= Sets the device number to use. Playing a file with ``-v`` will show a list of available devices. sdl SDL 1.2+ audio output driver. Should work everywhere where SDL 1.2 builds, but may require the SDL_AUDIODRIVER environment variable to be set appropriately for your system. buflen= Sets the audio buffer length in seconds. Is used only approximately, or even disaregarded entirely by the sound system. Playing a file with ``-v`` will show the requested and obtained exact buffer size. A value of 0 selects the sound system default. bufcnt= Sets the number of extra audio buffers in mpv. Usually needs not be changed. null Produces no audio output but maintains video playback speed. Use ``--no-audio`` for benchmarking. pcm 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= Write the sound to instead of the default ``audiodump.wav``. If nowaveheader is specified, the default is ``audiodump.pcm``. rsound audio output to an RSound daemon host= Set the address of the server (default: localhost). Can be either a network hostname for TCP connections or a Unix domain socket path starting with '/'. port= Set the TCP port used for connecting to the server (default: 12345). Not used if connecting to a Unix domain socket.