MediaTrackSettings: channelCount property

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 channelCount property you provided when calling either getUserMedia() or applyConstraints().

If needed, you can determine whether or not this constraint is supported by checking the value of channelCount as returned by a call to 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

Browser compatibility

See also

• Media Capture and Streams API
• Capabilities, constraints, and settings
• channelCount
• MediaTrackSettings