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---
title: "RTCRtpStreamStats: trackId property"
short-title: trackId
slug: Web/API/RTCRtpStreamStats/trackId
page-type: web-api-instance-property
browser-compat: api.RTCRtpStreamStats.trackId
---
{{APIRef("WebRTC")}}
The {{domxref("RTCRtpStreamStats")}} dictionary's
**`trackId`** property is a string which uniquely identifies
the {{domxref("RTCMediaStreamTrackStats")}} object which contains the track statistics
for the {{domxref("MediaStreamTrack")}} for which statistics are provided in this
object.
## Value
A string which uniquely identifies the
{{domxref("RTCMediaStreamTrackStats")}} object that provides statistics for the track
for which statistics are being collected by this {{domxref("RTCStatsReport")}}.
> **Note:** This value is _not_ the same as the value of
> {{domxref("MediaStreamTrack.id")}}.
## Specifications
{{Specifications}}
## Browser compatibility
{{Compat}}