Amazon DSP video ads: OTT and OLV

• Only available in US
• Site serving requires an MP4 video file
• Requires file size less than or equal to 500 MB
• Pillarbox or letterbox formatting is accepted, however, OTT ads with both pillarbox and letterbox in the same ad will not be accepted
• OTT ads are delivered in non-clickable environments so they should not include call-to-action elements that encourage clicking (e.g., a button shape that says “learn more”)
• Third party impression tracking is accepted for specific vendors, please consult your Amazon Advertising representative for details

Advertisers can use third party video tags from an Amazon certified third party vendor (excluding OTT). The tags must be VAST 2, VAST 3, or VPAID 2. We recommend including VAST 2 tags in every campaign to ensure all supply sources can be used, as some sources do not support VAST 3 or VPAID. If a VPAID tag is provided, we recommend it includes both Flash and JavaScript to access more inventory.

Video viewability should be measured using VPAID tags from one of the approved vendors.

In order for JavaScript video players to accept a VAST response, ad servers have to include a Cross Origin Resource Sharing (CORS) header formatted as:

Access-Control-Allow-Origin: <origin header value>

Access-Control-Allow-Credentials: true

Without a valid VAST response, a video creative will not serve on Amazon-owned sites. This ensures a positive experience for Amazon’s customers.