Common questions about Post-Roll Ads, answered.
What are post-roll ads?▾
Post-roll ads are video ads that play after the main content finishes. Because they run once the viewer has already gotten what they came for, they reach a satisfied, fully-engaged audience — but also one whose attention is naturally drifting toward leaving, so post-roll trades guaranteed prior engagement for lower staying power than pre- or mid-roll.
When are post-roll ads effective?▾
When you want to reach viewers who completed the content — a self-selected, highly engaged group — and a follow-on message or CTA makes sense after they've finished. They work for re-engagement, related offers, or a call to action that builds on the content just watched. They're weaker for broad reach (many viewers leave before the end) or when capturing attention up front is the priority.
Post-roll vs pre-roll and mid-roll — how do they compare?▾
Pre-roll reaches everyone at the start (high attention, high skip intent); mid-roll reaches committed mid-content viewers (good completion, interrupts the experience); post-roll reaches viewers who finished (maximum prior engagement, but attention is leaving). Reach is largest for pre-roll and smallest for post-roll. Choose by goal: pre-roll for reach, mid-roll for engaged attention, post-roll for a follow-on message to finishers.
Why is completion intent important for post-roll?▾
Because only viewers who watched to the end see a post-roll ad, the audience is pre-qualified as engaged and interested in the topic — valuable for relevant follow-on messaging. The flip side is that having finished, they're primed to move on, so the post-roll must grab the residual attention quickly with a clear, relevant CTA before they navigate away.
Do post-roll ads have lower engagement?▾
Often, yes, relative to pre- and mid-roll, because the viewer's goal (watching the content) is already complete and their attention is shifting to whatever's next. That's not a reason to avoid post-roll — it reaches a uniquely engaged, self-selected audience — but it does mean the creative must be concise and immediately compelling, and you should weigh its narrower reach when planning the buy.
