Max file size: 100k for initial portion of the ad viewer-initiated portion may be any size.When adhered to typically a file will end up being approximately 1.5 MB per 15 seconds at 1000 kbps bitrate, but this may vary depending on ad content.įor Non-Linear Ad Formats the DVAFG recommends: For lower bandwidth (less than 2 mbps) 18 fps may be used.įor In-Stream Formats the Digital Video In-Stream Ad Format Guidelines (DVAFG) offers guidance on encoding ready-to-serve files recommending methods for achieving a target bitrate. File quality: Recommended 24 fps minimum.video in-display advertisements, video-only creative in between text or image content popularly called out-stream, videos placed in feed or in between content lists. This guidance covers all video creative placements in non-video environments, e.g. The IAB Tech Lab’s New Ad Portfolio provides guidance for lightweight ads to help creative developers build ads that complement fast loading pages. VAST does not inherently allow for JavaScript, and so it is up to players of VAST ads to provide this support.īut the best way to avoid resource usage thresholds is to build lightweight ads that respect the device’s resources and user experience. So, many Video Ad Serving Template (VAST) ads with media files larger than 4 MB may in fact be safe from removal due to the circumstances of how they’re played.īut how can ad servers know whether their ads with larger assets were in fact played successfully, particularly if they’re served programmatically? Chrome has provided an API to detect interventions as they happen, however it requires usage of JavaScript in the client. if the element loads directly on the top page), or if the iframe has received some kind of user interaction (e.g. This intervention will not trigger on content which is not iframed (e.g.

Video ads in particular may be vulnerable to this intervention, which will affect iframes which load more than 4 MB of data. Throughout September 2020, Chrome is planning a wide release of a new browser intervention, which will monitor ad iframes and may redirect them to an error page if resource usage exceeds certain thresholds.

Google chrome ad