CampaignReel

Ad placement specs against what generators output

Fitting Google Veo output into YouTube ad formats

Google states three lengths for Veo 3.1 (four, six and eight seconds), ties the eight second option to 1080p, 4k or reference images, offers 16:9 and 9:16, and says generated videos are kept on the server for two days. The last of those is a deadline, not a specification. As of 2026-09-22.

The longest clip is tied to the dearest rungFour, six and eight seconds are the published lengths, and eight is available only at 1080p, at 4k, or when reference images are supplied. A campaign choosing the fewest joins is choosing the higher resolution at the same time.Which length does the piece needFour or six secondsAny resolutionThe cheapest rung is available and a bumper is onecall.Eight seconds1080p, 4k or reference imagesThe length condition and the resolution choice are thesame decision.Stated on the model page, not on a price list
Fig. 1 Two columns that usually move independently are wired together here, which is the kind of thing only a documentation page says out loud.
Each YouTube format against what Google Veo publishes. Recorded 2026-09-22.
FormatGenerations neededNote
Bumper, 5-6 sOne generationSix seconds is one of the three published lengths
Non-skippable, up to 60 sEight generationsEight seconds is the ceiling, and only above 720p
Skippable, 30 s of paid viewFour generationsFour eight second pieces, or five six second ones
Masthead, 16:9 up to 30 sFour generations16:9 is the stated default shape

Inclusion rule. Formats from Google's own help page, matched only against limits the tool vendor publishes. Where either side does not state a value, the row says so rather than estimating. Order. Shortest format first, as on the placements page.

1How much each tool puts in writing

Published limits per toolHow many separate output limits each tool states in public, Google Veo marked. A campaign can only be planned against limits that are written down. Recorded 2026-09-22.Published limits per toolAmazon Nova Reel4 published4 publishedGoogle Veo4 published4 publishedGrok Imagine4 published4 publishedHeyGen4 published4 publishedRunway4 published4 publishedWan 3.04 published4 publishedCogVideoX3 published3 publishedHedra3 published3 publishedLTX-Video3 published3 publishedMiniMax3 published3 publishedPixVerse3 published3 publishedSceneMixer3 published3 publishedPika2 published2 published
Fig. 2 How many separate output limits each tool states in public, Google Veo marked. A campaign can only be planned against limits that are written down. Recorded 2026-09-22.
Published output limits per tool, with Google Veo marked. Recorded 2026-09-22.
ToolLimits published
Amazon Nova Reel4 published
CogVideoX3 published
Google Veo4 published
Grok Imagine4 published
Hedra3 published
HeyGen4 published
LTX-Video3 published
MiniMax3 published
Pika2 published
PixVerse3 published
Runway4 published
SceneMixer3 published
Wan 3.04 published

Inclusion rule. Tools with a sheet on this site, counted by how many separate output limits their own pages state. A limit mentioned only in a launch post is not counted. Order. Alphabetical by tool name.

Bumper, 5-6 s, tool by toolOne published limit at a time, every tool beside it, Google Veo marked. Placement rules and tool limits are never mixed on one axis. Recorded 2026-09-22.Bumper, 5-6 s, tool by toolBumper, 5-6 sAmazon Nova Reel — Bumper, 5-6 s: One shotAmazon Nova ReelCogVideoX — Bumper, 5-6 s: One generationCogVideoXGoogle Veo — Bumper, 5-6 s: One generationGoogle VeoGrok Imagine — Bumper, 5-6 s: One generationGrok ImagineHedra — Bumper, 5-6 s: One generationHedraHeyGen — Bumper, 5-6 s: One sceneHeyGenLTX-Video — Bumper, 5-6 s: One generationLTX-VideoMiniMax — Bumper, 5-6 s: One generationMiniMaxPika — Bumper, 5-6 s: One generationPikaPixVerse — Bumper, 5-6 s: One generationPixVerseRunway — Bumper, 5-6 s: One generationRunwaySceneMixer — Bumper, 5-6 s: One generationSceneMixerWan 3.0 — Bumper, 5-6 s: One generationWan 3.0
Fig. 3 One published limit at a time, every tool beside it, Google Veo marked. Placement rules and tool limits are never mixed on one axis. Recorded 2026-09-22.
Every tool on one published limit, with Google Veo marked. Recorded 2026-09-22.
ToolBumper, 5-6 s
Amazon Nova ReelOne shot
CogVideoXOne generation
Google VeoOne generation
Grok ImagineOne generation
HedraOne generation
HeyGenOne scene
LTX-VideoOne generation
MiniMaxOne generation
PikaOne generation
PixVerseOne generation
RunwayOne generation
SceneMixerOne generation
Wan 3.0One generation

Inclusion rule. Tools publishing output limits on their own product pages. A tool silent on this particular limit keeps its row, marked hollow. Order. Alphabetical by tool name.

Non-skippable, up to 60 s, tool by toolOne published limit at a time, every tool beside it, Google Veo marked. Placement rules and tool limits are never mixed on one axis. Recorded 2026-09-22.Non-skippable, up to 60 s, tool by toolNon-skippable, up to 60 sAmazon Nova Reel — Non-skippable, up to 60 s: One request of ten shotsAmazon Nova ReelCogVideoX — Non-skippable, up to 60 s: Ten generationsCogVideoXGoogle Veo — Non-skippable, up to 60 s: Eight generationsGoogle VeoGrok Imagine — Non-skippable, up to 60 s: Four generationsGrok ImagineHedra — Non-skippable, up to 60 s: One generationHedraHeyGen — Non-skippable, up to 60 s: One sceneHeyGenLTX-Video — Non-skippable, up to 60 s: Seven generationsLTX-VideoMiniMax — Non-skippable, up to 60 s: Four generationsMiniMaxPika — Non-skippable, up to 60 s: Six or more generationsPikaPixVerse — Non-skippable, up to 60 s: Four generationsPixVerseRunway — Non-skippable, up to 60 s: Four generationsRunwaySceneMixer — Non-skippable, up to 60 s: Two generations on Wan 3.0SceneMixerWan 3.0 — Non-skippable, up to 60 s: Two generationsWan 3.0
Fig. 4 One published limit at a time, every tool beside it, Google Veo marked. Placement rules and tool limits are never mixed on one axis. Recorded 2026-09-22.
Every tool on one published limit, with Google Veo marked. Recorded 2026-09-22.
ToolNon-skippable, up to 60 s
Amazon Nova ReelOne request of ten shots
CogVideoXTen generations
Google VeoEight generations
Grok ImagineFour generations
HedraOne generation
HeyGenOne scene
LTX-VideoSeven generations
MiniMaxFour generations
PikaSix or more generations
PixVerseFour generations
RunwayFour generations
SceneMixerTwo generations on Wan 3.0
Wan 3.0Two generations

Inclusion rule. Tools publishing output limits on their own product pages. A tool silent on this particular limit keeps its row, marked hollow. Order. Alphabetical by tool name.

Skippable, 30 s of paid view, tool by toolOne published limit at a time, every tool beside it, Google Veo marked. Placement rules and tool limits are never mixed on one axis. Recorded 2026-09-22.Skippable, 30 s of paid view, tool by toolSkippable, 30 s of paid viewAmazon Nova Reel — Skippable, 30 s of paid view: One request of five shotsAmazon Nova ReelCogVideoX — Skippable, 30 s of paid view: Five generationsCogVideoXGoogle Veo — Skippable, 30 s of paid view: Four generationsGoogle VeoGrok Imagine — Skippable, 30 s of paid view: Two generationsGrok ImagineHedra — Skippable, 30 s of paid view: One generationHedraHeyGen — Skippable, 30 s of paid view: One sceneHeyGenLTX-Video — Skippable, 30 s of paid view: Four generationsLTX-VideoMiniMax — Skippable, 30 s of paid view: Two generationsMiniMaxPika — Skippable, 30 s of paid view: Two to three generationsPikaPixVerse — Skippable, 30 s of paid view: Two generationsPixVerseRunway — Skippable, 30 s of paid view: Two generationsRunwaySceneMixer — Skippable, 30 s of paid view: One generation on Wan 3.0SceneMixerWan 3.0 — Skippable, 30 s of paid view: One generationWan 3.0
Fig. 5 One published limit at a time, every tool beside it, Google Veo marked. Placement rules and tool limits are never mixed on one axis. Recorded 2026-09-22.
Every tool on one published limit, with Google Veo marked. Recorded 2026-09-22.
ToolSkippable, 30 s of paid view
Amazon Nova ReelOne request of five shots
CogVideoXFive generations
Google VeoFour generations
Grok ImagineTwo generations
HedraOne generation
HeyGenOne scene
LTX-VideoFour generations
MiniMaxTwo generations
PikaTwo to three generations
PixVerseTwo generations
RunwayTwo generations
SceneMixerOne generation on Wan 3.0
Wan 3.0One generation

Inclusion rule. Tools publishing output limits on their own product pages. A tool silent on this particular limit keeps its row, marked hollow. Order. Alphabetical by tool name.

2Length and resolution are wired together

The three lengths do not sit apart from the resolution ladder. Eight seconds is available only at 1080p or 4k or when reference images are supplied, which means the longest clip and the cheapest rung cannot be had at once. A campaign that wants the fewest joins is also choosing the higher tier, whether or not the picture needs it.

Against the ad formats that pairing lands awkwardly. A six second bumper is one run at any resolution. A thirty second skippable is four runs at the top of the range, and a sixty second non-skippable is eight, which is the highest join count of any entry here that publishes a length in seconds at all.

3Two days on the server is a production deadline

The documentation says generated videos are stored on the server for two days, after which they are removed. No other page in this register states a retention period for the thing it produced, and none of the placement help pages has any reason to mention one, so this figure sits on the sheet with nothing opposite it.

It still changes the schedule. A piece generated on a Friday and left for a Monday review is gone, and regenerating it does not return the same footage. That makes downloading part of generating rather than a step afterwards, and it is the kind of constraint that only shows up in a register that reads the documentation rather than the price.

4Sources

Output limits read from the Veo 3.1 documentation at ai.google.dev, checked 2026-09-22. Format requirements are from Google Ads Help, and the matching rule is on method. Next along the register: Grok Imagine, Hedra. The whole set of 15 is on published limits, and the sheets for each are indexed at tools.