Documentation:Modules/alsa
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Revision as of 06:53, 21 March 2019 by DoesItReallyMatter (talk | contribs) (Create page marked up/adapted from source code/changelog)
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.
The audio output module has no shortcut. The access module has a shortcut of alsa.
Contents
Options
Audio output
| Module: alsa | |
|---|---|
| Type | Audio output |
| First VLC version | - |
| Last VLC version | - |
| Operating system(s) | Linux |
| Description | ALSA audio output |
| Shortcut(s) | - |
- 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-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 Guide • Streaming HowTo • Hacker Guide • Modules)
Please read the Documentation Editing Guidelines before you edit the documentation
Please read the Documentation Editing Guidelines before you edit the documentation
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.
