VAST 4.2 linear video ad

<?xml version="1.0" encoding="UTF-8"?>
<!-- Sample VAST 4.2 linear ad — samplefiles.com. Tracking URLs point at example.com. -->
<VAST version="4.2" xmlns="http://www.iab.com/VAST">
  <Ad id="sample-ad-001" sequence="1">
    <InLine>
      <AdSystem version="1.0">SampleFiles Ad Server</AdSystem>
      <AdServingId>sf-0001</AdServingId>
      <AdTitle>Sample 10-second pre-roll</AdTitle>
      <Advertiser>Northwind Components (fictional)</Advertiser>
      <Impression id="imp1"><![CDATA[https://example.com/track/impression?ad=001]]></Impression>
      <Error><![CDATA[https://example.com/track/error?code=[ERRORCODE]]]></Error>
      <Creatives>
        <Creative id="creative-001" sequence="1">
          <UniversalAdId idRegistry="samplefiles.com">SF-001</UniversalAdId>
          <Linear>
            <Duration>00:00:10</Duration>
            <TrackingEvents>
              <Tracking event="start"><![CDATA[https://example.com/track/start]]></Tracking>
              <Tracking event="firstQuartile"><![CDATA[https://example.com/track/q1]]></Tracking>
              <Tracking event="midpoint"><![CDATA[https://example.com/track/mid]]></Tracking>
              <Tracking event="thirdQuartile"><![CDATA[https://example.com/track/q3]]></Tracking>
              <Tracking event="complete"><![CDATA[https://example.com/track/complete]]></Tracking>
            </TrackingEvents>
            <VideoClicks>
              <ClickThrough id="click"><![CDATA[https://example.com/?utm_source=vast]]></ClickThrough>