https://developer.mozilla.org/en-US/docs/Web/API/RTCInboundRtpStreamStats/lastPacketReceivedTimestamp
RTCInboundRtpStreamStats: lastPacketReceivedTimestamp property - Web APIs | MDN
The lastPacketReceivedTimestamp property of the RTCInboundRtpStreamStats dictionary indicates the time at which the most recently received packet arrived from...
web apispropertymdn