Fitting SceneMixer output into YouTube ad formats
SceneMixer (scenemixer.com) states 30 seconds as the longest single generation for Wan 3.0 and Seedance 2.5 jobs and 15 for Seedance 2.0 and MiniMax H3 jobs, and defaults to 16:9 with 9:16 available. Every YouTube format except the 60 second non-skippable fits inside one generation on its longest tier. As of 2026-10-13.
| Format | Generations needed | Note |
|---|---|---|
| Bumper, 5-6 s | One generation | Fits on every tier |
| Non-skippable, up to 60 s | Two generations on Wan 3.0 | Composited, billed per second |
| Skippable, 30 s of paid view | One generation on Wan 3.0 | Fits inside the 30 s ceiling |
| Masthead, 16:9 up to 30 s | One generation | 16:9 is the stated default |
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
| Tool | Limits published |
|---|---|
| Amazon Nova Reel | 4 published |
| CogVideoX | 3 published |
| Google Veo | 4 published |
| Grok Imagine | 4 published |
| Hedra | 3 published |
| HeyGen | 4 published |
| LTX-Video | 3 published |
| MiniMax | 3 published |
| Pika | 2 published |
| PixVerse | 3 published |
| Runway | 4 published |
| SceneMixer | 3 published |
| Wan 3.0 | 4 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.
| Tool | Bumper, 5-6 s |
|---|---|
| Amazon Nova Reel | One shot |
| CogVideoX | One generation |
| Google Veo | One generation |
| Grok Imagine | One generation |
| Hedra | One generation |
| HeyGen | One scene |
| LTX-Video | One generation |
| MiniMax | One generation |
| Pika | One generation |
| PixVerse | One generation |
| Runway | One generation |
| SceneMixer | One generation |
| Wan 3.0 | One 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.
| Tool | Non-skippable, up to 60 s |
|---|---|
| Amazon Nova Reel | One request of ten shots |
| CogVideoX | Ten generations |
| Google Veo | Eight generations |
| Grok Imagine | Four generations |
| Hedra | One generation |
| HeyGen | One scene |
| LTX-Video | Seven generations |
| MiniMax | Four generations |
| Pika | Six or more generations |
| PixVerse | Four generations |
| Runway | Four generations |
| SceneMixer | Two generations on Wan 3.0 |
| Wan 3.0 | Two 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.
| Tool | Skippable, 30 s of paid view |
|---|---|
| Amazon Nova Reel | One request of five shots |
| CogVideoX | Five generations |
| Google Veo | Four generations |
| Grok Imagine | Two generations |
| Hedra | One generation |
| HeyGen | One scene |
| LTX-Video | Four generations |
| MiniMax | Two generations |
| Pika | Two to three generations |
| PixVerse | Two generations |
| Runway | Two generations |
| SceneMixer | One generation on Wan 3.0 |
| Wan 3.0 | One 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.
2Where the 30 second ceiling lands
Thirty seconds is the number that matters against this platform, because three of the six YouTube formats sit at or under it: the bumper at 5 to 6 seconds, the Masthead autoplay window at 30, and the point at which a skippable in-stream view is charged, also 30. A tool whose single generation reaches 30 seconds can produce each of those as one continuous piece.
The 60 second non-skippable is the exception and needs two. This vendor composites segments into a longer piece and bills that separately, at one credit per second of output, so the join is a documented step rather than something handled outside the tool.
3Shape is stated, which is unusual here
Sixteen-nine by default with 9:16 available is published on the site, and of the four priced pages in this register it is the one that names a shape at all. For advertising that is the spec that cannot be fixed after the fact: a vertical placement will not take a widescreen file, and re-cropping generated footage moves faces out of frame in a way re-encoding never does.
What is not published is any statement about frame rate on the same page, or about whether output carries anything a platform's review process looks for. Those are recorded as not stated rather than inferred.
4Sources
Output limits read from the price list at scenemixer.com, checked 2026-09-12. Format requirements are from Google Ads Help, and the matching rule is on method. Next along the register: Wan 3.0, Amazon Nova Reel. The whole set of 15 is on published limits, and the sheets for each are indexed at tools.
- Longest single generation30 seconds on the Wan 3.0 and Seedance 2.5 tiers, 15 seconds on the Seedance 2.0 and MiniMax H3 tiersstated per tier
- Aspect ratios16:9 by default, with 9:16 availablestated on the site
- Beyond the clip limitEpisodes are composited from segments, billed at 1 credit per second of outputhow length is reached