To improve your experience, we'll be soon moving resources in this help center to the Google Ads Help Center. Visit the Google Ads Help Center for the latest specifications on ad formats.

Video Ads (formerly in-stream video ads)

Important Notes: Optional Companion

YouTube is aware of ad delivery issues with some companion units (300x250s & 300x60s) due to the nature of how VAST is requested and rendered by the IMA SDK. As a result, companion banners may not always appear. Please note that the unit itself is not billed upon and not guaranteed. We are working to resolve these issues as soon as possible.

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