Overview
What is Seedance 2 Fast?
Seedance 2 Fast is a ByteDance model available in Starpop. Fast multimodal video generation with text, image, video, and audio inputs. A faster Seedance 2 route for multimodal iteration at 480p or 720p across common and ultrawide formats.
Choose Fast to compare references, refine motion, and produce time-sensitive variations before a final standard render. Starpop keeps the model, input mode, duration, format, resolution, and credit choices in one workspace so a team can move from a first test to a publishable asset without rebuilding the brief in another tool.
Specifications
Available in Starpop
These values come from Starpop’s live model configuration and can change as providers add or remove capabilities.
- Inputs
- Text, Image, Video, Audio
- Durations
- 4s, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, 15s
- Aspect ratios
- 16:9, 4:3, 1:1, 3:4, 9:16, 21:9
- Output options
- 480p, 720p
- Estimated credits
- 1–2.5 credits
- Typical generation time
- About 3 minutes
Best uses
When to choose Seedance 2 Fast
Choose Fast to compare references, refine motion, and produce time-sensitive variations before a final standard render.
- 01Rapid multimodal iteration
- 02Reference testing at 480p or 720p
- 03Time-sensitive social variations
Considerations
Plan the tradeoffs
Fast does not expose the standard model’s 1080p option.
Keep reference assignments consistent so variation results remain comparable.
FAQs
Common questions
What is Seedance 2 Fast best used for?
Seedance 2 Fast is particularly useful for rapid multimodal iteration, reference testing at 480p or 720p, time-sensitive social variations. The right choice still depends on the input assets, delivery format, turnaround, and credit budget for the job.
What inputs does Seedance 2 Fast support in Starpop?
Seedance 2 Fast supports text, image, video, audio input workflows in Starpop. Available controls are shown in the workspace after the model is selected, so unsupported combinations are not presented as options.
How many credits does Seedance 2 Fast use?
The currently configured estimate is 1–2.5 credits. The exact amount shown in Starpop follows the selected resolution, format, duration, or quality option, so review the workspace estimate before generating.
Prompt tips
Get a more useful first result
- 1Build a reusable base prompt for iteration.
- 2Change one reference or instruction per test.
- 3Use 480p for composition checks and 720p for stronger previews.
- 4Specify which input controls motion.
Similar video models
Compare another approach
Reviewed 2026-07-30 against Starpop configuration and ByteDance source material.
Developer source