Viewable Video Impressions

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A desktop video ad or mobile video ad that meets the criteria of:

  • Desktop: 50% of the ad’s pixels on an in-focus browser tab in the viewable space of the browser page that has met the time criterion that two continuous seconds of the video advertisement is played.
  • Mobile: 50% of the ad’s pixels on an in-focus browser or a fully downloaded, opened, initialized application, on the viewable space of the device that has met the time criterion that two continuous seconds of the video advertisement is played.
  • For both desktop video and mobile video, the required time is not necessarily the first two seconds of the video ad; any unduplicated content of the ad comprising two continuous seconds qualifies in this regard.[1]

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  1. IAB US Digital Video Glossary