VAST tracking events / NonLinear
VAST overlayViewDuration tracking event
Short answer: Fires with how long a NonLinear overlay was in view. VAST 4.0+. Introduced in VAST 4.0.
When it fires
The overlay's visible duration. This is the NonLinear analogue of quartiles. Pause ads and other portfolio formats that are NonLinear with video should ship overlayViewDuration plus a Duration on the creative.
Where it is valid
| 2.0 | 3.0 | 4.0 | 4.1+ |
|---|---|---|---|
| No | No | Yes | Yes |
Legal containers: NonLinear. An event in the wrong container is not a player error. It is a URL nobody calls.
Using it in a tag
<TrackingEvents>
<Tracking event="overlayViewDuration">
<![CDATA[https://track.example.com/overlayViewDuration]]>
</Tracking>
</TrackingEvents>VAST XML fragment only. This excerpt belongs inside a complete VAST document, so standalone validation will fail until it is wrapped in a full <VAST>response.
Related vastlint rules
- VAST-4.1-tracking-event-value: Tracking event attribute not in the valid set for this VAST version
Related events
- creativeView: Fires when the creative is first displayed. Primary signal for NonLinear and companions.
- complete: Fires when linear playback reaches the end of Duration.
- timeSpentViewing: Existed only in VAST 4.0. Removed in 4.1.
Check the XML, then confirm the beacons fire
Validate the event names and containers on the document. Test a live URL when the XML is clean and reporting is still empty.