Authorized Buyers supports Skippable In-Stream Video Ads in both VAST 2.0 and 3.0.
Authorized Buyers will not consider creatives to be skippable if they have skip
tracking URLs included under
Ad/Wrapper/Extensions/Extension/CustomTracking instead of under
because Authorized Buyers is unable to analyze the contents or functionality of a
VPAID ad, it cannot detect an ad's skip functionality if the ad is
implemented through VPAID.
Authorized Buyers supports skippable ads that use VAST 2.0 (through a custom in-line skippable tracking element in the XML) or VAST 3.0 with built-in skippable ad tracking functionality.
How are skippable ads served?
When a skippable ad is served, the publisher player reads the VAST response to determine if the ad has been implemented correctly as a skippable ad and then displays a skippable button. The ad will be displayed for at least five seconds before it can be skipped.
Google's protocol and OpenRTB implementation support the following fields for video duration and skipability:
This means that while the Google protocol can have a granular skippable and non-skippable duration, the OpenRTB implementation only has a single maximum duration value.
Prior to bid flattening, OpenRTB's
maxduration would be set to
the lower of the Google protocol's
skippable_max_ad_duration fields. This behavior has now changed to
sending two separate bid requests when these values differ: one representing
maxduration for skippable and the other for non-skippable
The following examples show how a Google protocol request translates
to OpenRTB before and after bid flattening. The equivalent Google protocol
request has a
15 and a
skip (true OR false)
|Original request without flattening
|Flattened request #1: Non-skippable
|Flattened request #2: Skippable
The system periodically loads VAST tags to check whether they are skippable. In
between checks, the system assumes that the creative, uniquely identified by
buyer_creative_id, remains skippable or non-skippable as determined
by the previous check. Therefore, the policy is that skippable and non-skippable ads
cannot be rotated on the same
Requirements for VAST serving technologies
Required new custom tracking event in VAST 2:
For Authorized Buyers to render an in-stream video creative as skippable, the VAST creative
must include at least one
Tracking node under Ad/Inline/Extensions/Extension/CustomTracking,
with the attribute
event="skip". The content of the node should be a
CDATA-wrapped URI that the video player will ping if the user clicks the skip button.
Here is an example:
<CustomTracking> <Tracking event="skip"> <![CDATA[ http://googleads.g.doubleclick.net/pageid/conversion/?ai=BYjRF3nOCTrCYG8_a-gbhkeDyAaKNvgYC6tiCpyDAjbcBsNsGEA IAQGyAQ93d3cueW91dHViZS5jb23IAQXaAShodHRwOi8vd3d3LnlvdXR1YmUuY29tL3ZpZGVvL3NFaHktU1hrTm8wuAIMyALS9s0eqAMBsAP ]]> </Tracking> </CustomTracking>
For VAST 3, instead of a custom tracking extension, only the
skip event should be included.
Optional new custom tracking event:
Authorized Buyers will also support
Tracking nodes under Ad/Inline/Extensions/Extension/CustomTracking
with the attribute
event="engagedView". The content of these nodes should be a CDATA-wrapped
URI that the video player will ping when the user reaches the lesser of 30 seconds or video completion.
Differences from TrueView
Skippable video ads on Authorized Buyers are not the same as TrueView ads and cannot be marketed to your customers as such. Here are the primary differences between skippable video ads and TrueView:
- TrueView is only available through AdWords.
- TrueView is available on a Cost-per-View (CPV) basis, but Authorized Buyers skippable video ads are only available on a Cost-per-Impression (CPM) basis. Buyers may charge their customers on a CPV basis, but they will pay for the underlying skippable impressions on a CPM basis.
- TrueView ads increment the YouTube view count of the media file when users choose not to skip the ad, but Authorized Buyers skippable video ads do not, even when the media file is hosted on YouTube.
- TrueView media files must be hosted on YouTube. Authorized Buyers media files may optionally be hosted on YouTube. Contact your Technical Account Manager for more information about hosting the media files for your in-stream creatives on YouTube.
- Authorized Buyers skippable ads have a maximum length of 30 seconds.