latency property

double get latency

The MediaTrackSettings dictionary's latency property is a double-precision floating-point number indicating the estimated latency (specified in seconds) of the MediaStreamTrack as currently configured. This lets you determine what value was selected to comply with your specified constraints for this property's value as described in the MediaTrackConstraints.latency property you provided when calling either MediaDevices.getUserMedia or MediaStreamTrack.applyConstraints.

This is, of course, an approximation, since latency can vary for many reasons including CPU, transmission, and storage overhead.

If needed, you can determine whether or not this constraint is supported by checking the value of MediaTrackSupportedConstraints.latency 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 double get latency;

set latency (num value)

Implementation

external set latency(num value);