deviceId property
The MediaTrackSettings dictionary's
deviceId property is a string which
uniquely identifies the source for the corresponding MediaStreamTrack
for
the origin corresponding to the browsing session. This lets you determine
what value was
selected to comply with your specified constraints for this property's
value as
described in the MediaTrackConstraints.deviceId property you provided
when calling either MediaDevices.getUserMedia.
If needed, you can determine whether or not this constraint is supported by checking the value of MediaTrackSupportedConstraints.deviceId as returned by a call to MediaDevices.getSupportedConstraints. However, typically this is unnecessary since browsers will ignore any constraints they're unfamiliar with.
Because doesn't include this information, tracks associated with a WebRTC RTCPeerConnection will never include this property.
Implementation
external String get deviceId;Implementation
external set deviceId(String value);