Documentation:Modules/alsa

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oss and alsa audio capture support were removed from v4l and v4l2 in VLC 1.0.0, but accesses were provided as sub-modules. To emulate old behaviour, use --input-slave oss:// or --input-slave alsa://.

In the module options below AOUT_CHANS_FRONT and other variables are defined in include/vlc_es.h. The values are not defined here because of their complexity.

Audio channels in VLC 2.0.1 must be configured manually (bugs) but --alsa-audio-channels defaults to stereo.

The access module option --alsa-format has been deprecated since VLC 2.1.0.

HDMI support is planned for VLC 4.0.0 through the --alsa-passthrough option.

Options

Audio output

Module: alsa
Type Audio output
First VLC version -
Last VLC version -
Operating system(s) Linux
Description ALSA audio output
Shortcut(s) (none)
  • alsa-audio-device <string> : Audio output device (using ALSA syntax) default value: default
  • alsa-audio-channels <integer> : Channels available for audio output. If the input has more channels than the output, it will be down-mixed. This parameter is ignored when digital pass-through is active default value: AOUT_CHANS_FRONT

Access

Module: alsa
Type Access
First VLC version 1.0.0
Last VLC version -
Operating system(s) Linux
Description ALSA audio capture
Shortcut(s) alsa
  • alsa-stereo <boolean> : Stereo default value: enabled
  • alsa-samplerate <integer> 192000, 176400, 96000, 88200, 48000, 44100, 32000, 22050, 24000, 16000, 11025, 8000, 4000 : Sample rate (Hertz) default value: 48000

Source code

This page is part of official VLC media player Documentation (User GuideStreaming HowToHacker GuideModules)
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Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.