---
title: RTCStats
slug: Web/API/RTCStats
tags:
  - API
  - Dictionary
  - NeedsTranslation
  - RTCStats
  - Reference
  - Report
  - Statistics
  - Stats
  - TopicStub
  - WebRTC
  - rtc
translation_of: Web/API/RTCStats
---
<div>{{APIRef("WebRTC")}}</div>

<p><span class="seoSummary">The <strong><code>RTCStats</code></strong> dictionary is the basic statistics object used by WebRTC's statistics monitoring model, providing the properties required of all statistics data objects.</span> Specific classes of statistic are defined as dictionaries based on <code>RTCStats</code>. For example, statistics about a received {{Glossary("RTP")}} stream are represented by {{domxref("RTCReceivedRtpStreamStats")}}.</p>

<h2 id="Properties">Properties</h2>

<dl>
 <dt>{{domxref("RTCStats.id", "id")}}</dt>
 <dd>A {{domxref("DOMString")}} which uniquely identifies the object which was inspected to produce this object based on <code>RTCStats</code>.</dd>
 <dt>{{domxref("RTCStats.timestamp", "timestamp")}}</dt>
 <dd>A {{domxref("DOMHighResTimeStamp")}} object indicating the time at which the sample was taken for this statistics object.</dd>
 <dt>{{domxref("RTCStats.type", "type")}}</dt>
 <dd>A {{domxref("DOMString")}} indicating the type of statistics the object contains, taken from the enum type {{domxref("RTCStatsType")}}.</dd>
</dl>

<h2 id="The_statistics_type_hierarchy">The statistics type hierarchy</h2>

<p>The various dictionaries that are used to define the contents of the objects that contain each of the various types of statistics for WebRTC are structured in such a way that they build upon the core <code>RTCStats</code> dictionary, each layer adding more relevant information.</p>

<ul>
 <li>{{domxref("RTCStats")}} is the foundation of all WebRTC statistics objects
  <ul>
   <li>{{domxref("RTCRtpStreamStats")}} adds to <code>RTCStats</code> information that applies to all RTP endpoints (that is, both local and remote endpoints, and regardless of whether the endpoint is a sender or a receiver)

    <ul>
     <li>{{domxref("RTCReceivedRtpStreamStats")}} further adds statistics measured at the receiving end of an RTP stream, regardless of whether it's local or remote.
      <ul>
       <li>{{domxref("RTCInboundRtpStreamStats")}} contains statistics that can only be measured on a receiver at the local end of the RTP connection.</li>
       <li>{{domxref("RTCOutboundRtpStreamStats")}} contains statistics related to the receiver at the remote end of the RTP stream.</li>
      </ul>
     </li>
     <li>{{domxref("RTCSentRtpStreamStats")}} offers statistics related to the sending end of an RTP stream.
      <ul>
       <li>{{domxref("RTCOutboundRtpStreamStats")}} contains statistics about the local sending endpoint of an RTP stream.</li>
       <li>{{domxref("RTCRemoteOutboundRtpStreamStats")}} holds statistics related to the remote sending end an RTP stream.</li>
      </ul>
     </li>
    </ul>
   </li>
  </ul>
 </li>
</ul>

<h2 id="Specifications">Specifications</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td>{{ SpecName('WebRTC 1.0', '#dom-rtcstats', 'RTCStats') }}</td>
   <td>{{ Spec2('WebRTC 1.0') }}</td>
   <td>Initial specification.</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility">Browser compatibility</h2>



<p>{{Compat("api.RTCStats")}}</p>