What a thirty second window costs in calls
Two placement figures land at exactly thirty seconds: the Masthead autoplay window and the point a skippable in-stream view is charged. Across this register that window is one call on the widest prompt-driven ceiling and five where the length is fixed at six seconds. As of 2026-09-22.
| Item | What is published | Detail |
|---|---|---|
| One call | Entries whose ceiling is thirty seconds or more | No seam an editor owns |
| Two or three calls | Entries stopping at ten to twenty-five seconds | One or two joins to match |
| Four or five calls | Entries stopping at six or eight seconds | Three or four joins to match |
Inclusion rule. Division of a placement figure by a published clip ceiling, rounded up. Entries that publish no length are recorded as not stated rather than estimated. Order. Fewest calls first.
1Thirty seconds is the useful place to measure
A five to six second bumper fits everywhere and tells a plan nothing. Sixty seconds splits the register into three entries that clear it and twelve that do not. Thirty is where the spread is widest and most of the interesting differences sit.
It is also the figure two separate placement rules land on, which makes it the length a campaign is most likely to be built around on this platform.
2Each join is work the length figure does not mention
A seam is a place where a face, a key light and a background have to survive two separate generations that shared nothing. Nothing on any page in this register speaks to whether they will.
So the call count is the honest output of these sheets. It says whether continuity becomes the main creative problem of the job, and it stops short of judging how the joins look, because no vendor publishes that.
3Two entries cannot be counted at all
Both were read from rate cards that publish resolutions and no length. With the denominator missing, the division has no answer and the cell reads not stated rather than one call.
Filling it from a demonstration would look identical in the table to a figure read off a vendor page. The check date beside every other cell would then stop meaning anything, which is why the row stays hollow and keeps its place in the count.
- Duration parameterAn integer in the range [2, 30] seconds, and input plus output must not exceed 30 seconds
- Duration parameterThe allowed range is 1-15 seconds
- Video length6 seconds, at 49 framesfrom the model card table
- Longest output stated anywhere in this register30 minutes per scene, with 50 scenes per video
4Making the ad itself
For ad work around “Thirty seconds in calls”, SceneMixer's pages explain how its ad projects are produced:
Sixty to a hundred and twenty seconds is the working band for vertical short drama, and the outline paces for it.
SceneMixer, AI Drama for TikTok & Reels — “How long should a feed episode be?” (read 2026-10-13)
A segment is one generation, and its length is the sum of its shots’ seconds.
SceneMixer, How to Change a Segment’s Duration, and Which Tiers Accept 30 Seconds (read 2026-10-13)
5Sources
Format requirements come from Google Ads Help, read 2026-09-12, and tool limits from each vendor page listed on published limits, read 2026-09-22. The rule against mixing the two is on method. Nearby: Who publishes a minimum, Ad lengths, Call to action.