Seedance 2.5: 30-Second AI Video From One Photo
Most image-to-video models stop at 5–10 seconds, which forces creators to stitch clips together — visible seams, drifting faces, mismatched sound. Seedance 2.5, ByteDance's long-form entry in the Dreamina family, fixes that at the source: it animates a single still into one native 30-second clip with synchronized audio. Here's what it does, what it costs, how the budget tier (Seedance Mini) fits in, and how to try both free.
What Seedance 2.5 does
- 4–30 second single-pass clips — the longest of any model on our lineup (Vidu Q4: 16s, Kling: 10s, Veo: 8s)
- Synchronized native audio — dialogue and effects locked to motion, no extra charge
- 480p / 720p / 1080p on the same model
- Coherent long takes — characters, lighting and sound stay consistent because it's one generation, not glued clips
Seedance pricing on Flying Roadster AI
Simple credit pricing, audio always included:
| Model | Typical clips | Audio |
|---|---|---|
| Seedance 2.5 | 65cr / 5s · 365cr / 30s 480p · 785cr / 30s 720p | Included |
| Seedance 2.0 Mini | 20cr / 5s 480p · 40cr / 10s · 90cr / 10s 720p | Included |
Yes, 2.5 is a premium tier — you're paying for the 30-second capability. That's exactly why Seedance Mini exists as the everyday option: 20 credits with audio, the cheapest full-featured clip on the site.
How to use Seedance (free start)
- Open the Seedance 2.5 generator (or Mini for budget drafts).
- Upload one clear photo — the subject large in frame.
- Write a scene prompt with a beginning and an end: "she notices the letter, reads it, and slowly smiles as the light shifts to golden hour". Long clips reward multi-beat directions.
- Pick duration (5 / 10 / 30), enable audio, generate, download the clean MP4.
Pro tip: draft the prompt on Mini at 5s/480p (20 credits), then render the winner at 30 seconds on 2.5. Same family, so the motion style carries over.
FAQ
What is Seedance 2.5?
ByteDance’s long-form image-to-video model (Dreamina family). Its signature: one still becomes a native 30-second clip — continuous motion with synchronized audio, no stitching of shorter clips.
How much does Seedance cost on Flying Roadster AI?
Seedance 2.5 starts at 65 credits for a 5-second 480p clip; a full 30-second 480p clip is 365 credits and 30s/720p is 785 — audio included. Seedance Mini starts at 20 credits with audio. The live price always shows before you generate.
What is Seedance Mini?
Seedance 2.0 Mini is the fast budget tier of the same family — quick renders, reliable motion, audio included. On Flying Roadster AI that’s 20 credits for a 5-second 480p clip with sound — the cheapest full-featured video here.
Seedance vs Kling 2.6 — which is better?
Kling 2.6 still wins on cinematic motion per credit. Seedance 2.5 wins on length (30s native vs 10s) and free audio; Seedance Mini matches Kling’s price with audio included. Pick by job: long story → Seedance 2.5, cheap daily clips → Mini, cinematic 5–10s → Kling.
Can I try Seedance for free?
Yes — Flying Roadster AI gives every new account 15 starter credits toward their first clip. No card required.
Sources: Seedance 2.5 API & pricing (fal.ai) · Seedance 2.0 Mini API (fal.ai). Last reviewed October 2026.