CampaignReel

Ad placement specs against what generators output

Generators emit in steps, and placements expect spans

Pika documents 5 and 10 second generations. SceneMixer documents 30 seconds for Wan 3.0 and Seedance 2.5 jobs and 15 for Seedance 2.0 and MiniMax H3 jobs, with episodes composited from segments and billed per second. A bumper needs between 5 and 6. As of 2026-10-13.

Fitting a step list into a placement windowA generator offers discrete settings and a placement states a span. Where a setting lands inside the span the work is done. Where it does not, the difference is paid for and then trimmed away, which is a cost that appears in the edit rather than in the generation invoice.A five-to-six second windowGenerator emits 5sLands insideNo trim, no retime, no secondaudio pass.Generator emits 10sFour seconds paid anddiscardedThe cut has to lose a beat ratherthan a tail.Generator emits 15s or 30sWrong tool for thisplacementUseful elsewhere in the samecampaign.Match the tightest window first
Fig. 1 The narrowest window in a campaign decides which settings are usable, which is why duration is read before resolution.
Published generation lengths set against the tightest placement window on this sheet. Recorded 2026-10-13.
ItemWhat is publishedDetail
Pika5 and 10 seconds, priced per stepOne step lands in bumper
SceneMixer, Wan 3.0 and Seedance 2.5 tiers30 seconds, longest single generationComposite for anything longer
SceneMixer, Seedance 2.0 and MiniMax H3 tiers15 secondsSame composite route
Bumper requirementBetween 5 and 6 secondsThe narrowest target on the sheet

Inclusion rule. Generation lengths are taken from the vendor's own documentation and recorded per tier where the vendor states them per tier. Composite lengths are recorded separately from single generations, because they are billed differently. Order. By how many placements on this sheet the emitted length can serve.

1A step list is not a range

If a tool emits 5 or 10 seconds and nothing between, then every placement window that does not contain one of those numbers needs an edit afterwards. That edit is where the extra cost hides: not in the generation, in the trimming and the retiming and the second pass on audio.

A planner reading only the maximum would conclude that a 10-second tool covers a 6-second window comfortably. It covers it by throwing away four seconds that were paid for.

2Composites move the ceiling but change the unit

Where a vendor documents assembling an episode from segments, the practical maximum stops being a property of the model and becomes a property of the budget. Per-second billing means length is priced linearly and the question shifts from can it to how much.

For advertising that matters less than it does for drama, because almost every placement here is under a minute. The composite route is worth recording anyway, since it is the answer to the only format on this sheet that permits ten minutes.

3Match the tightest window first

The practical order is to find the narrowest placement in the campaign, check whether any generation setting lands inside it, and only then look at resolution and file size. Doing it the other way round produces a beautiful 1080p file that is half a second too long for the one format the campaign was bought for.

That ordering is the whole reason this sheet keeps duration in front of resolution.

  • Durations
    5 and 10 seconds for text-to-video and image-to-video, and up to 20 to 25 seconds on Pikaframespriced per stepPika, pricing / recorded 2026-09-12
  • Longest single generation
    30 seconds on the Wan 3.0 and Seedance 2.5 tiers, 15 seconds on the Seedance 2.0 and MiniMax H3 tiersstated per tierSceneMixer, price list / recorded 2026-10-13
  • Beyond the clip limit
    Episodes are composited from segments, billed at 1 credit per second of outputhow length is reachedSceneMixer, price list / recorded 2026-09-12
  • Bumper
    Between 5 and 6 seconds, non-skippablethe tightest formatGoogle Ads Help, video ad formats / recorded 2026-09-12
  • Video duration
    Up to 10 minutesnon-Spark adsTikTok Ads Manager, video ad specifications / recorded 2026-09-12

4Sources

Format requirements come from Google Ads Help, read 2026-09-12, and tool limits from each vendor page listed on published limits, read 2026-09-12 and 2026-10-13. The rule against mixing the two is on method. Nearby: Spark Ads, Where figures were read, Length tied to a tier.