Seedance - Seedance 2 Fast
Seedance
Seedance is ByteDance's AI video suite on FuseAITools—from v1 Lite/Pro through Seedance 2 multimodal clips. Pair with Seedream for 2K/3K stills and image edits before video generation.
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⚡ Seedance 2 Fast
Seedance 2 Fast (seedance-2-fast) accepts ultra-long prompts (up to 20,000 characters) plus optional first/last frames and reference images, videos, and audio. Set 4–15 seconds on a slider, pick 480p or 720p, and enable the required web search switch.
What is Seedance 2 Fast?
Seedance 2 Fast on FuseAITools generates video from a prompt (3–20,000 characters) with optional firstFrameUrl and lastFrameUrl. Add up to 9 total images (including frames), 3 reference videos, and 3 reference audios. Duration is 4–15 seconds at 480p or 720p; aspect ratios include adaptive.
🎬 Seedance 2 on FuseAITools
Seedance 2 on FuseAITools is a multimodal video line—condition generation with first and last frames, plus optional reference images, videos, and audio. Choose Seedance 2 Fast for quicker iteration or Seedance 2 when you need up to five reference videos. Output is 4–15 seconds at 480p or 720p; credits scale by duration and reference usage. New users receive 20 free credits on sign-up.
✨ Seedance 2 Core Features
Bookend motion with firstFrameUrl and lastFrameUrl—counts toward the nine-image reference cap.
Condition with reference images, videos, and audio—Seedance 2 supports up to 5 reference videos.
Up to 20,000 characters for detailed scene, style, and motion direction.
4–15s outputs at 480p/720p—per-second credits shown on Generate before submission.
🎯 Built for These Scenarios
📊 Seedance 2 Fast vs Seedance 2
| Dimension | Seedance 2 Fast | Seedance 2 |
|---|---|---|
| Model | seedance-2-fast | seedance-2 |
| Reference videos | Up to 3 | Up to 5 |
| Reference images | Up to 9 (incl. first/last frame) | Same |
| Reference audio | Up to 3 | Up to 3 |
| Duration & resolution | 4–15s slider; 480p / 720p | Same |
| Pricing | Per-second credits; higher when reference videos uploaded | Same billing logic |
❓ FAQ (Seedance 2)
⚙️ Seedance 2 Technical Specs
Parameters below match the FuseAITools Seedance form and API (seedance-2-fast / seedance-2).
| Workflow | Prompt | References | Duration | Resolution / ratio |
|---|---|---|---|---|
| Seedance 2 Fast | 3–20,000 chars | First/last frame; ≤9 images total; ≤3 videos; ≤3 audios | 4–15s (slider) | 480p/720p; 1:1–21:9 + adaptive |
| Seedance 2 | 3–20,000 chars | First/last frame; ≤9 images total; ≤5 videos; ≤3 audios | 4–15s (slider) | 480p/720p; 1:1–21:9 + adaptive |
Seedance 2 — Two Workflows
Fast for iteration; full Seedance 2 for richer video references: