WebRTC Statistics API - Web APIs
rtcaudioreceiverstats or rtcvideoreceiverstats rtcaudiohandlerstats or rtcvideohandlerstats rtcmediahandlerstats rtcstats remote-candidate statistics about a remote ice candidate associated with the connection's rtcicetransports.
... rtcaudiosenderstats or rtcvideosenderstats rtcaudiohandlerstats or rtcvideohandlerstats rtcmediahandlerstats rtcstats stream statistics about a particular media mediastream.
... rtcsendervideotrackattachmentstats or rtcsenderaudiotrackattachmentstats or rtcreceivervideotrackattachmentstats or rtcreceiveraudiotrackattachmentstats rtcmediahandlerstats rtcstats transceiver statistics related to a specific rtcrtptransceiver.

RTCStatsReport - Web APIs
track the object is one of the types based on rtcmediahandlerstats: for audio tracks, the type is rtcsenderaudiotrackattachmentstats and for video tracks, the type is rtcsendervideotrackattachmentstats.

RTCStatsType - Web APIs
track the object is one of the types based on rtcmediahandlerstats: for audio tracks, the type is rtcsenderaudiotrackattachmentstats and for video tracks, the type is rtcsendervideotrackattachmentstats.