Seedance 2.0 Fast workspace
Seedance 2.0 Fast for short video prompt testing
This workbench is locked to Doubao-Seedance-2-0-fast-260128. It exposes the Fast model's registered 480p and 720p settings for short requests.
Keep each prompt test easy to compare
A short Fast request can check a camera move, a pacing beat, or a prompt revision. Change one part of the brief at a time so the next result answers a clear question.
SeeVideo is an independent third-party service. The workbench shows the controls wired to the connected provider adapter; the provider still validates every request.
A focused Fast pass
The workbench keeps the model locked while you adjust the prompt and registered output settings.
- 01
Write the test question
Decide whether the next clip is testing action, framing, timing, or a reference choice.
- 02
Set a short clip
Choose 480p or 720p and a duration that leaves the action readable.
- 03
Compare the next change
Keep the parts that worked, then revise one instruction for the next request.
Controls and limits in this workspace
The model registry, provider adapter, and credit estimator supply these values. The server checks the final request before it is submitted.
| Control | Current value | How to read it |
|---|---|---|
| Provider model ID | doubao-seedance-2-0-fast-260128 | The locked workspace sends this exact model ID to the provider. |
| Resolution | 480p / 720p | The selector exposes only these registered output sizes. |
| Clip duration | Up to 15 seconds | The 2.0 adapter accepts manual values from 4 seconds through this limit. |
| Reference limits | Up to 9 images, 3 videos, and 3 audio files | Audio needs an image or video reference. A first frame uses exactly one image; a first-and-last pair uses exactly two and cannot be mixed with video or audio. |
| Output format | MP4 | The format selector is limited to the registered format for this model. |
| Credit estimate | Calculated in the workbench | The estimate changes with model, duration, resolution, aspect ratio, and video input when present. |
Two Fast examples, with their request records
These completed Fast tasks show the prompt and settings sent to the provider.
Rainy-window pan
Prompt
A quiet studio table beside a rain-speckled window. A ceramic cup and a folded sketchbook sit in warm afternoon light. The camera makes one slow left-to-right pan, keeping the cup in focus. Natural motion, no people, no logos, no readable text, no subtitles.
- Model
- Fast
- Mode
- Text to video
- Ratio
- 16:9
- Duration
- 5s
- Resolution
- 720p
- Model ID
- doubao-seedance-2-0-fast-260128
Flower-market pass
Prompt
Vertical street scene at an open-air flower market in early morning. A bicycle passes through the frame while paper wrapping moves in a light breeze. Handheld phone-camera framing with one short forward step. No logos, no readable signs, no subtitles.
- Model
- Fast
- Mode
- Text to video
- Ratio
- 9:16
- Duration
- 5s
- Resolution
- 720p
- Model ID
- doubao-seedance-2-0-fast-260128
What to review before publishing
A completed task still needs a full review. Watch the clip before relying on it in a published edit.
Occlusion
When subjects cross in front of one another, continuity can break around the overlap.
Fast interactions
Hands, objects, and several moving subjects need scene-by-scene review when the action is quick.
Physical cause and effect
Motion, contact, and materials can look inconsistent from one part of a clip to the next.
Generated lettering
Small text and symbols can change between frames. Add final readable copy in an editor after review.
Dynamic credit estimate
The locked workbench calculates a credit estimate from the selected settings. The server recalculates accepted work, then settles the record from provider completion usage. The estimate is not a fixed price quote.
Review credit pricingQuestions about this workspace
Which resolutions does Seedance 2.0 Fast support here?
The Fast workbench offers 480p and 720p. Choose Seedance 2.0 Standard in the main workspace when you need its 1080p or 4K settings.
How long can a Fast clip be?
Fast accepts manual clip durations from 4 to 15 seconds. This page does not promise how long a request will take to process.
How many reference materials can I add?
A normal reference request can include up to 9 images, 3 videos, and 3 audio files. Audio needs an accompanying image or video. First-frame mode requires one image; first-and-last-frame mode requires two images and cannot be mixed with video or audio references.
When should I choose Fast instead of Standard or Mini?
Choose Fast for short prompt experiments and direction checks at 480p or 720p. Move to Standard for 1080p or 4K output. Choose Mini when a lightweight draft is sufficient.
Is this an official ByteDance or Seedance page?
No. SeeVideo is an independent third-party service. Seedance is used here to identify the connected model and does not imply affiliation or endorsement by ByteDance, Seed, Dreamina, or CapCut.
Model documentation
The linked Volcengine documentation identifies the Seedance 2.0 version. This page describes the model ID, controls, and billing behavior exposed by this independent service.
Read the Volcengine Seedance documentation