Google · model workflow guide
Veo 3.1 Video Duration Guide
Longer clips are not automatically better. For production work, duration should be chosen around one clear action per shot, continuity risk and the cost of failed generations.
How GenVideoKit structures Veo 3.1 prompts
Use coherent natural-language direction with explicit temporal flow from start state to end state. Describe subject action, camera behavior, lighting and environmental motion. When relevant, integrate dialogue, ambience and sound effects because this model family supports native audiovisual generation. Avoid conflicting camera moves and keep continuity physically plausible.
Text → videoImage → videoNative audioFirst / last frameExtension
Production shortcut
Use one main action per clip. If the idea needs several distinct beats, split it in Scene Builder instead of forcing everything into one long generation.
Reference pricing snapshot
$0.4 / second How to choose clip length
- Use a short validation render for a risky motion or identity-heavy shot.
- Give the action enough time to complete naturally; avoid cramming several story beats into one generation.
- Split long ideas into connected scenes and use the previous last frame as the next visual anchor.
- Price retries, not only the final accepted duration.
Reference retry math at the stored rate
| Clip | 1 attempt | 4 attempts | 8 attempts |
|---|---|---|---|
| 5 sec | $2.00 | $8.00 | $16.00 |
| 8 sec | $3.20 | $12.80 | $25.60 |
| 10 sec | $4.00 | $16.00 | $32.00 |