Length, shape, seeds and variations
4–30 seconds, up to 4 at once.
- Length: 4 to 30 seconds, depending on the model. Price rises with length.
- Shape: 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 and Auto. A first frame or an extension keeps its own shape.
- Variations: up to 4 videos from one prompt, each charged.
- Seed: the same seed and settings give a very similar video. Off while variations are above one.
- Lock camera asks for a static shot. Writing "fixed shot" does the same.
- Sound is on by default and costs nothing extra.
- Draft for a 1080p finish (Seedance 2.5): make it at 480p, then "Finish at 1080p" renders the same take within seven days.
- Wan 2.6: "Keep out of the video" lists things to avoid; "Let Wan rewrite the prompt" can be turned off to keep your prompt as written.