The VAST video begins to play when 50% or more of the ad is viewable. The video will begin playing with muted sound and within the dimensions of the ad itself. If the user scrolls further down the page (or back up), and the video is no longer 50% viewable, then the video will pause. The video will resume again when it is more than 50% viewable. Control panels are available at all times which allow the user to turn on the sound, pause the video or click to full screen. If interacting with the video, the user will be redirected to the landing page.

  Instantly captures users attention
  A great story telling format without any interactions needed
  Optimize view time
  Proven to drive maximized brand uplift


Aspect ratio: 16:9 or 2:1. Minimum W600px
Max file size: max 1MB per 5 seconds
Duration: 5-30 seconds (max 120 seconds)
File formats: MP4 H.264 codec and audio in AAC-LC up to 48kHz

  Image (optional end banner)

Dimensions: W600xH300px
Max file size: 65kB (per banner)
File formats: JPG, PNG, GIF

  Lead Time

3 working days prior to campaign start, provided that all material is delivered according to the specifications in this document.


Widespace always tracks impressions, and if an end banner is delivered also clicks. If an end banner is delivered, third-party tracking can also be implemented for that:

  • 1 click tracker

Must support HTTPS.


  • 1 VAST-tag (if providing a VPAID-tag, make sure that the sound of the video is either muted or equal to player’s sound setting)
  • 1 optional image for end banner (same aspect ratio as video) with 1 target URL

Send all material to

We support VAST up to 3.0 and VPAID up to 2.0

Supported environments

  • iOS SDK v4.4 and up
  • Android SDK v4.7.1 and up

Mobile Web

  • iOS from 10 and up (any browser)
  • Android Chrome Browser (at least version 55)

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