CampaignReel

Ad placement specs against what generators output

Making a bumper ad with generated video

A bumper ad runs 5 to 6 seconds and cannot be skipped. Twelve of the 15 tools in this register publish a length that covers it in a single call, one publishes its length in frames rather than seconds, and two publish no length at all on the pages read here. As of 2026-10-13.

What each page puts in writingFilled where the page states something in that column, hollow where it does not address it.What each page puts in writingGenerations neededAmazon Nova Reel — Generations needed: One shotAmazon Nova ReelCogVideoX — Generations needed: One generationCogVideoXGoogle Veo — Generations needed: One generationGoogle VeoGrok Imagine — Generations needed: One generationGrok ImagineHedra — Generations needed: One generationHedraHeyGen — Generations needed: One sceneHeyGenKling AI — Generations needed: Not statedKling AILTX-Video — Generations needed: One generationLTX-VideoMiniMax — Generations needed: One generationMiniMaxPika — Generations needed: One generationPikaPixVerse — Generations needed: One generationPixVerseRunway — Generations needed: One generationRunwaySceneMixer — Generations needed: One generationSceneMixerVidu — Generations needed: Not statedViduWan 3.0 — Generations needed: One generationWan 3.0
Fig. 1 Filled where the page states something in that column, hollow where it does not address it.
How many generations each tool's published limits imply for a bumper ad of 5 to 6 seconds. Recorded 2026-10-13.
ToolGenerations neededNote
Amazon Nova ReelOne shotSix seconds is the published increment
CogVideoXOne generationSix seconds is the published length
Google VeoOne generationSix seconds is one of three published lengths
Grok ImagineOne generationAny whole value from one second upward
HedraOne generationTen minute ceiling, so nothing binds
HeyGenOne sceneThirty minute ceiling, so nothing binds
Kling AINot statedNo duration published on the price page
LTX-VideoOne generation177 frames at the published 30 fps
MiniMaxOne generationFour seconds is the floor on MiniMax-H3
PikaOne generation5 s is a priced step
PixVerseOne generationVersion 6 takes any value from one to fifteen
RunwayOne generationFive seconds is the floor on Gen-4.5
SceneMixerOne generationInside the 30 s tier ceiling
ViduNot statedNo duration published on the price page
Wan 3.0One generationTwo seconds is the floor

Inclusion rule. Every tool in this register, matched only against a length its own pages state. A vendor that publishes no length is recorded as not stated rather than estimated from a demonstration. Order. Alphabetical by tool name; the two with no published length keep their place in it.

1The format generated tools are already shaped for

Five to six seconds fits inside a single call on every tool that states a length in seconds, which means a bumper is the one YouTube format where the tool imposes no constraint the format does not already impose. There is no join to hide, no continuity to hold between shots, and no compositing step to pay for. Whatever a tool can do in one call, it can do here.

The constraint moves to the writing instead. Six seconds is one idea and one line, and the frame has to carry the brand without a reveal, because a viewer cannot be asked to wait for anything. That is a creative limit rather than a technical one, and no register can help with it.

2Where the published numbers stop

Two vendors here publish nothing about duration on their priced pages, so their rows say so. It is very likely that both can produce six seconds; the point of this register is that likely is not the same as published, and a media plan that has to be signed off runs on the second of those. A third row, LTX-Video, publishes a frame count and a frame rate and never a second, which is a different kind of gap and is marked as one.

Nothing in Google's help page states a resolution or aspect ratio for this format either, so the specification a buyer works to is a duration and nothing else. That is unusually simple and it is the reason bumpers are the common entry point for generated advertising.

3Shape is decided by the placement, not by the format

With no aspect ratio in the format definition, the shape a bumper has to be is whatever the surface it runs on takes, and that is decided in the media plan rather than here. Nine rows in this register publish their shapes somewhere a buyer can read them, from two values on Google Veo and HeyGen to eight on PixVerse; six publish nothing about shape at all.

It matters more at six seconds than at sixty. A short ad is usually one framing, and a framing generated for the wrong shape cannot be rescued by a crop without moving the subject, so the shape has to be right at the moment of generation rather than in an edit afterwards.

4This placement against the others

Stated length, format by formatWhat Google states for each format, Bumper ads marked. Skip behaviour and billing are separate columns and are never folded into the length. Recorded 2026-09-12.Stated length, format by formatLength Google statesBumper adsBumper ads — Length Google states: 5 to 6 secondsNon-skippable in-stream adsNon-skippable in-stream ads — Length Google states: 60 seconds or shorter
Fig. 2 What Google states for each format, Bumper ads marked. Skip behaviour and billing are separate columns and are never folded into the length. Recorded 2026-09-12.
The two YouTube formats with a hard length, with Bumper ads marked. Recorded 2026-09-12.
FormatLength Google states
Bumper ads5 to 6 seconds
Non-skippable in-stream ads60 seconds or shorter

Inclusion rule. The two formats Google gives a hard maximum length on its own help page. The other four are on the YouTube formats page. Order. Alphabetical by format name.

  • Bumper
    Between 5 and 6 seconds, non-skippablethe tightest formatGoogle Ads Help, video ad formats / 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
  • Aspect ratios
    16:9 by default, with 9:16 availablestated on the sitescenemixer.com / recorded 2026-09-19
  • 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
  • Video length
    6 seconds, at 49 framesfrom the model card tableCogVideoX-5B model card / recorded 2026-09-22
  • Veo 3.1 and Veo 3.1 Fast
    8 seconds, 6 seconds, 4 seconds, with 8 seconds only if 1080p or 4k or using reference imagesGoogle AI for Developers, Veo 3.1 / recorded 2026-09-22
  • Where the card says quality holds; length is published in frames
    Works best on resolutions under 720 x 1280 and number of frames below 257not secondsLightricks LTX-Video model card / recorded 2026-09-22
  • Duration parameter
    The allowed range is 1-15 secondsxAI docs, video generation / recorded 2026-09-22
  • Duration parameter
    An integer in the range [2, 30] seconds, and input plus output must not exceed 30 secondsAlibaba Cloud Model Studio, Wan3.0 API reference / recorded 2026-09-22

5Sources

The format length is from Google Ads Help, read 2026-09-12. Tool limits come from each vendor's own pages, listed with dates on published limits; the counting rule is on method.