MediaTrackSettings: channelCount property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
The MediaTrackSettings dictionary's
channelCount property is an integer indicating how many
audio channels the MediaStreamTrack is currently configured to have. This
lets you determine what value was selected to comply with your specified constraints for
this property's value as described in the
MediaTrackConstraints.channelCount property you provided when calling
either getUserMedia() or
MediaStreamTrack.applyConstraints().
If needed, you can determine whether or not this constraint is supported by checking
the value of MediaTrackSupportedConstraints.channelCount as returned by a
call to MediaDevices.getSupportedConstraints(). However, typically this
is unnecessary since browsers will ignore any constraints they're unfamiliar with.
Value
An integer value indicating the number of audio channels on the track. A value of 1 indicates monaural sound, 2 means stereo, and so forth.
Examples
See the Constraint exerciser example.
Specifications
| Specification |
|---|
| Media Capture and Streams # dom-mediatrackconstraintset-channelcount |
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
channelCount constraint
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- See implementation notes.