The kind of media device.
Browser-assigned identifier. Pass this to User.setAudioInputDevice or User.setAudioOutputDevice.
Human-readable device name as reported by the browser.
Browser group identifier. Devices sharing the same physical hardware share a groupId.
A microphone or other audio input device.
Returned inside AvailableAudioDevices.inputDevices from User.getAvailableAudioDevices. Pass
deviceIdto User.setAudioInputDevice to make this device active.