Creative Terms
In-Stream Ads
Video advertisements that play before, during, or after streaming video content.
Definition
In-stream ads are video advertisements integrated into streaming video content at natural break points. They include pre-roll (before content), mid-roll (during content), and post-roll (after content) placements. These ads leverage the viewer's active engagement with video content to deliver high-impact messaging, with placement timing and frequency carefully balanced against user experience.
Examples
Pre-roll ads that play before news clips or entertainment content
Mid-roll ad pods during longer-form content like TV episodes
Post-roll ads after short-form video content
Interactive in-stream formats with companion display units
Frequently asked questions
Common questions about In-Stream Ads, answered.
What are in-stream ads?
In-stream ads are video ads that play within a piece of video content — before it (pre-roll), during it (mid-roll), or after it (post-roll) — most commonly on YouTube and streaming platforms. They run inside the video player as part of the viewing stream, as opposed to appearing in a scrolling feed, so they reach viewers who are already in a watching (rather than browsing) mindset.
How are in-stream ads different from in-feed ads?
In-stream ads interrupt or bracket video content the viewer chose to watch, reaching them in a lean-back, committed-to-watching state. In-feed ads appear among posts in a scrolling feed, reaching viewers in an active, easily-distracted browsing state. In-stream tends to win on attention and completion for a captive audience; in-feed wins on native discovery and scale across social platforms. Creative should suit the mindset of each.
What in-stream formats are skippable?
On YouTube, skippable in-stream ads can be skipped after ~5 seconds (you pay for continued views or actions), while non-skippable in-stream ads (typically up to 15 seconds) play in full. Bumper ads are a 6-second non-skippable in-stream format. Mid-roll placements in longer content may be skippable or not depending on the platform and setup. Choose based on whether guaranteed completion or cost-efficient self-selection matters more.
When should I use in-stream ads?
Use in-stream when you want a viewer's fuller attention on a video message — product storytelling, demonstrations, or brand building — and want to reach people actively watching related content. They're strong for both awareness (non-skippable/bumper for guaranteed exposure) and consideration (skippable, where engaged viewers self-select). For quick-scroll discovery and high-volume social reach, in-feed formats are the complement.
How do I measure in-stream ad performance?
Track view-through metrics suited to the format: view rate and completion/quartile rates for how much of the ad is watched, plus skip rate on skippable formats (a high skip rate flags a weak hook). Layer on click-through and downstream conversions/ROAS for outcomes, and brand-lift studies for awareness goals. As with all video, the retention curve shows exactly where viewers disengage.
