Seedance 2.0 Fast
The Seedance 2.0 480P tier is for drafting; this page is the step up.
Where you pick it
Two places, one setting. In the episode editor: the button in the top bar that shows the current tier’s name, next to Composite. In Settings: Model Preferences → Video Model. Both change the same thing — the tier your next segments render on, in this project and in new ones. Segments already made keep the tier they were made with, and each version records it. The price on a segment’s generate button always shows the tier you are about to use.
What changes against 480P
The inputs do not; the picture does. Both faces in a two-shot read, hair and cloth keep their grain. On a phone at full screen this is where resolution stops being what you notice.
The Seedance 2.0 cap stays: up to 15 seconds per generation, the project’s aspect ratio, sound in the same render, every version kept.
References it accepts
Same slots as the other Seedance 2.0 tiers:
What it costs
25 credits per second, against 13 on the 480P tier and 63 on the standard tier. Draft at 480P, regenerate keepers here; the versions panel keeps both and the composite uses the active one. Credits are taken on delivery; if a generation fails, the credits come back or are held until support checks it.
When Fast is the right stop
Sharing a segment link, posting a vertical clip, sending a cut for notes, assembling an episode watched on a phone or tablet. The standard tier is for large screens and longer edits.
Content checks
Text and references are checked before rendering. A rejection is not charged: the credits come back and the credit history says so. The count is kept per account: after 12 rejections within 24 hours, the next one is held for review instead of refunded, and video generation pauses for 1 hour. So edit the flagged material rather than retrying the same segment. Content rules and checks explains what gets flagged.
Common errors
The messages you may meet on this tier:
| What you see | Usual cause | What to do |
|---|---|---|
| “Invalid input — check the reference images and duration, then retry.” | Usually one of the reference files for this segment could not be read | Generate again once; if it keeps failing, check that the character, location and prop images open, then contact support |
| “Blocked by content safety rules — edit the script or description and retry.” | The script or a reference tripped the content check | Edit the flagged part; see the content-check section for when a rejection is refunded |
| “The generation service hit a temporary problem. You weren’t charged — feel free to try again.” | The service was saturated; the site already tried again once for you | Wait a few minutes and generate again; nothing was deducted |
| Video generation paused | More than 12 rejected generations within 24 hours; the next one is held for review | Wait out the pause (1 hour); fix the material before retrying |
When to switch tier
Down to 480P while the storyboard is changing; up to standard for a 1080P keeper; across to a tier with 30-second takes when a scene needs an unbroken take longer than 15 seconds.
| Reference type | Limit on this tier | Note |
|---|---|---|
| Images | Up to 10 | Character sheets, location and prop images, states, your own uploads |
| Voice clips | Up to 5, about 14 s in total | Character voices; a clip that does not fit is left out and that character speaks from the written voice description |
FAQ
Why is it called Fast?
It is the 720P one of the three Seedance 2.0 tiers; on this site the name marks the middle of the three, not a different workflow.
Does Fast render 30-second takes?
No. The Seedance 2.0 tiers render segments up to 15 seconds; use a Seedance 2.5 or Wan tier for 30-second takes.
Can I mix Fast and 480P segments in one episode?
Yes. Each segment remembers its tier; the composite stitches each segment’s active version.
Is 720P enough for a vertical short?
For phone playback, usually yes.
Is a Fast render an upscale of my 480P render?
No. Every generation is a fresh render from the same inputs.
Regenerate a keeper on Fast
Take a 480P draft you like, switch the tier to Fast, and render the version you share.
Updated September 27, 2026
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