Amazon DSP video ads

Advertisers can serve 5+ second in-stream or out-stream video ads in MP4, WebM, or FLV format using the Amazon DSP.

Video assets

Aspect ratio16:9
Minimum duration*5s
Recommended duration*6s-30s
Maximum duration*120s
Minimum frame size1920x1080 (640x360 for third party served)
Minimum video bitrate4mbps (2mbps for third party served)
Recommended video bitrate8mbps
Maximum video bitrate10mbps
Minimum video frame rate24fps
Minimum audio bitrate192kbps (128kbps for third party served)
Minimum audio sample rate44khz
Supported FormatsVideo: H.264, MPEG-2, or MPEG-4; Audio: MP3 or AAC

* Restrictions apply to OTT videos. Please reference 'Over the Top (OTT)' section below

Over The Top (OTT)

  • Only available in US
  • Requires first-party video (site served)
  • Requires exact duration of 0:15 or 0:30 seconds
  • Requires an MP4 video file
  • Requires file size less than or equal to 500 MB
  • No pillarbox or letter box formatting
  • Make sure video does not include call-to-action elements that encourage clicking (e.g., a button shape that says “learn more”). The ads are not clickable.
  • Consult Amazon Advertising for details on the availability of third party impression tracking.

Third party serving

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.

CORS header formatting

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.