
Seedance 2.5 official model page. Source: ByteDance Seed.
Seedance 2.5 is easier to use when you stop treating the prompt as a sentence and start treating it as a production brief.
The official model positioning centers on 30-second storytelling, multimodal reference control, audio-video joint generation, and editing. The practical challenge is not finding more adjectives. It is telling the model which asset controls which character, which action belongs in which phase, what must remain unchanged, and what the final frame should look like.
This cookbook turns those principles into reusable prompt patterns for text-to-video, image-to-video, multi-reference creation, video editing, extension, keyframes, storyboards, transitions, and one-take content.
Research note: This cookbook is based on the supplied prompt guide and ByteDance Seed’s public Seedance 2.5 materials. Examples are prompt patterns, not guarantees. Generation quality depends on the source assets, task complexity, available controls, and review iterations.
Seedance 2.5 quick facts
| Capability | Practical use |
|---|---|
| 30-second generation | Fit a complete short scene or a tightly staged sequence into one generation |
| Multi-round extension | Build longer narratives while checking boundary continuity |
| Image, video, and audio references | Bind identity, motion, environment, voice, music, or sound effects to explicit roles |
| Video editing | Change a defined object, region, time range, or sound category while preserving the master video |
| First and last frames | Control the beginning and ending states of a continuous action |
| Multi-keyframe planning | Organize a sequence of distinct visual states |
| Audio-video generation | Coordinate dialogue, music, effects, and ambient sound |
| Flexible reference control | Separate what a reference contributes from what it must not contribute |
The universal prompt formula
For a simple text-only generation, start with:
A compact example:
When to omit details
Do not force every field into every prompt. Omit camera, sound, or style when it is irrelevant. Generation parameters belong in the interface or API configuration, not in the prose prompt, unless the product explicitly requires otherwise.
Recipe 1: text-to-video
Use this when there are no reference assets.
Rule: Put one major state change in each stage. Too many actions in one sentence often causes missed events or excessive cuts.
Recipe 2: reference mapping
When using multiple assets, never ask the model to “use all these references” without assigning roles.
Multi-reference example
Recipe 3: dialogue, music, sound effects, and subtitles
Use explicit markers when sound categories must remain separate:
For non-English dialogue:
To remove or preserve sound:
Recipe 4: a 30-second story with stages
Break a dense sequence into states with visible end conditions.
Time ranges allocate rhythm; they are not frame-accurate edit points. Avoid demanding several precise actions in one second.
Recipe 5: video editing
Define one master video, one target change, and an explicit preservation boundary.
Object replacement
Recipe 6: video extension
For a backward extension, end on the original first frame. For a forward extension, begin by matching the original last frame.
Check both sides of the boundary. The goal is natural visual, motion, and sound continuity—not pixel-identical splicing.
Recipe 7: first frame, last frame, and keyframes
For multiple keyframes:
Recipe 8: storyboard and white-model references
A storyboard is for shot order and approximate composition, not pixel-level reproduction.
For a rough white model, decide what it contributes:
- Coarse white model: motion paths, positions, camera movement, cuts, light changes, and sound rhythm.
- Detailed white model: complete structure and motion, ready for material, color, character, or environment re-rendering.
Recipe 9: one-take creation from images
Recipe 10: seamless transition between two videos
Recipe 11: emotion and performance
Replace abstract emotion words with visible actions.
Weak:
Stronger:
Recipe 12: camera language
A technical camera term is more reliable when translated into visible behavior.
A complete production prompt
Use this as a reusable starting point for a short branded video:
Preflight checklist
Before submitting a Seedance 2.5 prompt, check:
- Is the subject and main event explicit?
- Does every reference asset have a role?
- Did you say what each asset must not contribute?
- Are multiple people, products, and props named separately?
- Are assets selected by scene instead of all appearing at once?
- Does each story stage contain one major state change?
- Is the end state visible and testable?
- Are identity, clothing, prop ownership, screen direction, and space consistent?
- For editing, is there one master video and a narrow edit scope?
- For extension, does the boundary frame, motion trend, and sound state continue naturally?
- Are first and last frames individually defined and similarly framed?
- Are abstract emotions expressed through visible behavior?
- Are camera terms translated into observable motion?
- Are subtitles, dialogue, music, and effects explicitly separated?
- Did you avoid promising frame-perfect editing?
Capability boundaries
Seedance 2.5 prompts can improve control, but they cannot guarantee:
- frame-perfect timing from natural-language timestamps;
- pixel-identical continuation across clips;
- perfectly accurate subtitles, labels, formulas, or product specifications;
- stable identity when references are ambiguous or overloaded;
- production-ready legal, copyright, or factual review.
For exact text, logos, subtitles, timing, and product details, use a post-production pass after generation.