AD REVENUE • 6 min read

Why Video Ads in Google Ad Manager Are Key to Monetization in 2026

With the growing adoption of outstream video ads, publishers now have more opportunities to turn this format into a reliable revenue stream. These ads are supported by Google Ad Manager (GAM) and have become an increasingly important part of modern video monetization strategies, allowing publishers to tap into rising global video ad spending while maximizing their revenue potential.

Here’s why that gap matters, what you need before launching, and how to actually set it up.

Why Video Ads in Google Ad Manager Are Key to Monetization in 2026

Video ad demand has grown faster than the supply of quality video inventory for years now, and that imbalance tends to favor publishers. Advertisers are willing to pay more for video placements because video ads hold attention longer and typically perform better on brand metrics than a static banner ever could.

Google Ad Manager is built to handle this shift without forcing publishers to rebuild their entire ad stack. It supports in-stream video (ads that play within existing video content), outstream and native video (ads that play within article or feed content that isn’t natively video), and rewarded video, where readers opt in to watch an ad in exchange for something in return, like extra content access.

For publishers without traditional video content, outstream and native video formats are usually the more realistic entry point. They let a publisher run video ad units inside standard article pages, without needing a video library or a dedicated video section to support them.

Pre-requisites of Running Video Ads in Google Ad Manager

Before setting anything up, a few pieces need to be in place:

A Google Ad Manager account with an active network code is the foundation everything else connects to.
A video player that supports VAST or VPAID tags. Most modern video players do, but it’s worth confirming compatibility before building out ad units.
Defined ad inventory and placements. Decide where video ads will run within existing video content, as outstream units inside articles, or as rewarded units tied to specific content or features.
Demand connections set up. Whether through Google’s own demand, third-party demand partners, or a header bidding setup extended to video, you need active demand sources connected before ads can actually serve.
Compliance with ad policies, including auto-play and sound settings, since video ad experience rules are stricter than standard display in most regions.

How to Run Video Ads in Google Ad Manager?

Set Up Your Video Ad Unit

Inside Google Ad Manager, create a new ad unit specifically for video and assign it to the placement you’ve planned, whether that’s within existing video content or as an outstream unit inside an article page.

Choose the Right Format for the Placement

Different placements call for different formats:

In-stream video (pre-roll, mid-roll, post-roll) works for publishers who already have video content, playing before, during, or after that content.
Outstream or native video works for article-heavy sites, inserting a video ad unit directly into text content without requiring a video player elsewhere on the page.
Rewarded video ads work well for sites with gated content or features, offering readers something in exchange for watching, which tends to produce strong completion rates since the viewer opted in.
Companion ads run alongside a video ad, typically as a static display unit next to the video player, and are set up as a linked creative pair within the same line item.

Create Line Items and Creatives

Set up line items in Google Ad Manager defining pricing, targeting, and delivery priority for each video format. For programmatic demand, this usually means creating an open auction or header bidding line item; for direct-sold video campaigns, it means setting a guaranteed line item with the negotiated rate.

Configure the VAST Tag and Test Delivery

Generate the VAST tag for each ad unit and confirm it’s correctly linked in your video player. Before launching fully, test the tag in a sandbox or preview environment to confirm ads load, play, and track correctly, including companion ad pairing if applicable.

Launch and Monitor Performance

Once testing confirms clean delivery, launch the ad unit to live traffic. From there, monitor fill rate, video completion rate, and eCPM by format, since outstream, native, rewarded, and in-stream units often perform very differently even on the same site.

Key Takeaways: Video Ads in Google Ad Manager

Video ad formats, in-stream, outstream, native, rewarded, and companion ads, aren’t a niche add-on anymore. They’re one of the more reliable ways to lift monetization in 2026, especially for publishers who assumed video advertising required a dedicated video content strategy to begin with.

The setup takes more upfront work than a standard display unit, but the pieces are well documented and the pre-requisites are straightforward to confirm before launch. For most publishers, outstream and native video units are the fastest path to testing video ad revenue without building anything video-specific from scratch, with rewarded and in-stream formats worth adding once that foundation is in place.

Frequently Asked Questions

Do I need existing video content to run video ads in Google Ad Manager? No. Outstream and native video ad units let publishers run video ads inside standard article or feed content, without needing a dedicated video player or video library.

What’s the difference between in-stream and outstream video ads? In-stream video ads play before, during, or after existing video content. Outstream video ads play within non-video content, like an article, and don’t require a video player already on the page.

Are rewarded video ads worth setting up for a publisher site? Often, yes. Because readers opt in to watch a rewarded video ad in exchange for something, like extra content or a feature unlock, completion rates tend to be higher than standard video formats.

What is a companion ad in Google Ad Manager? A companion ad is a static display unit that runs alongside a video ad, typically next to the video player, and is set up as a linked creative within the same line item as the video ad itself.

Does video advertising actually pay more than display advertising? In most cases, yes. Video inventory, across in-stream, outstream, and rewarded formats, generally commands higher CPMs than standard display, largely due to stronger attention and completion metrics that advertisers value.

What is the IMA SDK, and do I need it? The IMA (Interactive Media Ads) SDK is Google’s toolkit for requesting and displaying video ads within a video player. It’s required for in-stream video ads, though outstream and native formats can sometimes work without a full video player setup.