SIMID-video-fallback-missing

No <MediaFile> video fallback alongside SIMID creative

A SIMID should always be accompanied by at least one standard video element. Players that do not support SIMID will ignore the element and play the video file instead. Without a fallback, those players will receive an empty block and show a blank ad slot. This affects a significant portion of inventory, particularly older CTV platforms.

A SIMID <InteractiveCreativeFile> should always be accompanied by at least one standard <MediaFile> video element. Players that do not support SIMID will ignore the <InteractiveCreativeFile> element and play the video file instead. Without a <MediaFile> fallback, those players will receive an empty <MediaFiles> block and show a blank ad slot. This affects a significant portion of inventory, particularly older CTV platforms.

<MediaFiles>
  <!-- no <MediaFile> — SIMID-only, no fallback -->
  <InteractiveCreativeFile type="text/html" apiFramework="SIMID">
    <![CDATA[https://example.com/creative.html]]>
  </InteractiveCreativeFile>
</MediaFiles>

<MediaFiles>
  <MediaFile delivery="progressive" type="video/mp4" width="1280" height="720">
    <![CDATA[https://example.com/ad.mp4]]>
  </MediaFile>
  <InteractiveCreativeFile type="text/html" apiFramework="SIMID">
    <![CDATA[https://example.com/creative.html]]>
  </InteractiveCreativeFile>
</MediaFiles>