RTCOutboundRtpStreamStats - Web APIs
senderid the {domxref("rtcstats.id", "id")}} of the rtcaudiosenderstats or rtcvideosenderstats object containing statistics about this stream's rtcrtpsender.

RTCStatsReport - Web APIs
if kind is "audio", this object is of type rtcaudiosenderstats; if kind is "video", this is an rtcvideosenderstats object.

RTCStatsType - Web APIs
if kind is "audio", this object is of type rtcaudiosenderstats; if kind is "video", this is an rtcvideosenderstats object.

WebRTC Statistics API - Web APIs
rtcaudiosenderstats or rtcvideosenderstats rtcaudiohandlerstats or rtcvideohandlerstats rtcmediahandlerstats rtcstats stream statistics about a particular media mediastream.