The MediaTrackSettings
dictionary's channelCount
property is an integer indicating how many audio channel 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 simply ignore any constraints they're unfamiliar with.
Syntax
var channelCount = MediaTrackSettings.channelCount;
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.
Example
See Example: Constraint exerciser in Capabilities, constraints, and settings for an example.
Specifications
Specification | Status | Comment |
---|---|---|
Media Capture and Streams The definition of 'channelCount' in that specification. |
Candidate Recommendation | Initial specification. |
Browser compatibility
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
channelCount | Chrome No support No | Edge No support No | Firefox No support No | IE ? | Opera No support No | Safari ? | WebView Android No support No | Chrome Android No support No | Firefox Android No support No | Opera Android No support No | Safari iOS ? | Samsung Internet Android No support No |
Legend
- No support
- No support
- Compatibility unknown
- Compatibility unknown