Seedance 2.5 Prompt Assistant
Design Seedance 2.5 prompts, multi-reference plans, shot breakdowns and first-to-last frame bridges.
Start from a use case
- Plan a 20-second continuous takeOne long moment split into stages that each end in a visible state.Shot plan
- Turn a product into a 15-second adYour product photo keeps its shape and label from the first pour to the hero shot.References
- Cast two people from two photosEach face stays with its own person through the whole scene.References
- Bridge a first and a last frameOne continuous change that starts on your first picture and lands on your last.Frames
- Find out why a clip went wrongUpload the clip or a screenshot and get the cause and a corrected prompt.Fix
What you provide
- Brief, length and what you needWhat happens, how long the clip is, and whether you want one prompt, a shot plan or a fix.
- What each reference controlsMark every picture, video or sound as identity, product, place, camera, motion, dialogue, sound, or the opening or closing state.
- What must not driftThe things you will check first: a face, a product label, an exact line, the final state.
How it works
- Lock the storyWho appears, what happens in what order and how it ends are fixed before a word is added.
- Give every reference one jobEach reference gets a line of its own; anything attached without a job is set aside.
- Write it the way Seedance 2.5 reads itStages with end states, camera moves tied to a subject, marked dialogue and sound, settings kept out of the text.
- Check and sendPrompt, shot list, what to check in the result and suggested settings, ready to open in the generator.
One idea, before and after
two friends arguing in a car then they both laugh. she says "you missed the exit again"
Natural daylight filters through the windshield with soft shadows shifting across the car interior as highway lights pass by. Inside the moving car, two adult friends sit in the front seats in the middle of a heated, animated debate. The driver holds the steering wheel with one hand and gestures defensively, while the woman in the passenger seat points forward toward the highway, turning toward him with wide eyes. The woman, in English, with exasperated amusement: {you missed the exit again}. The driver glances past her at the side mirror, gives a quick defeated smirk, and both friends instantly break into wide, unrestrained laughter, their shoulders loosening as the mock argument dissolves. The camera remains in a steady medium two-shot from the dashboard looking directly at both occupants, accompanied by faint, natural road vibrations. Sound: steady cabin engine hum, road tire noise, the woman's voice speaking clearly, followed by overlapping genuine laughter from both friends. No on-screen text, no subtitles, no captions, no watermark. Coherent anatomy, natural hands.
Questions
How long can a Seedance 2.5 clip be, and how does the assistant use that?+
Up to 30 seconds. The assistant uses your length to decide how many events fit, and keeps the length itself out of the prompt, because the model reads it from the settings.
How many references can I give it?+
Up to 30 pictures, 10 videos and 10 audio clips. The assistant writes one line per reference saying what to take from it and what to leave, so a busy set does not blend faces or swap props.
How does it lay out the timeline?+
By default it splits your length into back-to-back segments from 0:00 to the end, each ending in a clear state, and shows them as a shot strip. If you wrote your own times, they are kept.
How are dialogue and sound written?+
Your lines are kept word for word, with the speaker, the language and the delivery in front of each one. Music, spoken lines and on-screen text are marked differently so they are not mixed up.
Can it fix a clip that already went wrong?+
Yes. Upload the clip or a screenshot, tick what went wrong and it explains the likely cause and writes a corrected prompt.
What does a run cost?+
A few credits, shown on the button before you run. You never pay more than that price, and nothing is charged if no usable result comes back.