Which Sume video models stop at 15 seconds and which reach 30?
Seedance 2.5, Wan 3.0, Genjutsu and H3 Max Recast go past 15 seconds on Sume; MiniMax H3 stops at 15 and Gemini Omni Flash 1.1 at 10. The full limit table.
On Sume, seedance-2.5 takes 4 to 30 seconds, wan-3.0 takes 2 to 30, higgsfield-genjutsu takes 4 to 30 and h3-max-recast takes 5 to 30. minimax-h3 and minimax-h3-max take 5 to 15, gemini-omni-flash-1.1 takes 3 to 10, and the docs give every other catalog model a 15-second ceiling.
These limits come from Video generation and Video Router. The catalog is the source of truth, so read supported_durations from GET /v1/videos/models rather than hard-coding this table.
Duration limits by model
| Model id | Minimum | Maximum | Notes |
|---|---|---|---|
| seedance-2.5 | 4 s | 30 s | 480p, 720p, 1080p |
| wan-3.0 | 2 s | 30 s | Text and image to video |
| higgsfield-genjutsu | 4 s | 30 s | Motion transfer: a source video plus 1 to 8 reference images, 480p and 720p |
| h3-max-recast | 5 s | 30 s | Recast people in a source video, 768p and 1080p; duration is the source length |
| minimax-h3 | 5 s | 15 s | Native 480p and 768p |
| minimax-h3-max | 5 s | 15 s | 480p, 768p, 1080p |
| gemini-omni-flash-1.1 | 3 s | 10 s | 360p to 4K, 16:9 or 9:16 |
| seedance-2, seedance-2-fast, seedance-2-mini | - | 15 s | Other catalog models: 15 s ceiling |
What to do with a longer script
For anything past a model's ceiling, generate shots and assemble them. Timeline 1.0 is the public assembly surface: one audio spine plus ordered video slots into a long-form MP4.
- Under 15 s: any model fits; pick on price and look.
- 15 to 30 s in one take: Seedance 2.5 or Wan 3.0.
- Over 30 s: shots plus Timeline.
Sources
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