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<meta name="timeout" content="long">
<title>senderCaptureTimeOffset attribute in RTCRtpSynchronizationSource</title>
<div><video id="remote" width="124" height="124" autoplay></video></div>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/webrtc/RTCPeerConnection-helper.js"></script>
<script src="/webrtc/RTCStats-helper.js"></script>
<script