Seedance Troubleshooting: Fix the Cause, Not the Prompt

Negative prompts are not a universal repair list. They are most useful after you identify a specific failure and pair the exclusion with a clear positive instruction. “No bad anatomy, no blur, no artifacts” describes anxiety; “keep both hands visible on the table in a locked medium shot” describes a shot.

Start with the failure category

• Brief failure: the requested event never happens or the ending is missing.
• Identity failure: a person, product, wardrobe, or environment changes.
• Motion failure: movement slides, snaps, intersects, or ignores weight.
• Camera failure: framing, lens feel, movement, or screen direction drifts.
• Continuity failure: props, lighting, positions, or time change between beats.
• Text/audio failure: generated words, speech, captions, music, or timing are wrong.
• Delivery failure: the clip cannot be cropped, edited, looped, or approved as intended.

Name the category before editing the prompt. If several categories fail, simplify the shot until only one hard problem remains.

Fix common failures

The subject changes identity

Reduce movement and scene changes. Use a stronger identity reference and list a small set of visible invariants:

Preserve face shape, short black hair, green jacket, height, and body proportions throughout. Use one continuous medium shot with no occlusion or wardrobe change.

Do not describe ten subtle facial details if the face occupies a few pixels. Move the camera closer or split the shot.

Hands, feet, or objects deform

Keep the interaction readable and lower the number of contacts. Specify what remains visible and where it rests:

Both hands remain fully visible above the table. The left hand holds the cup by its handle; the right hand stays open on the notebook. No hand-to-hand contact.

If the motion is essential, provide a permitted motion reference and follow the R2V workflow.

Camera motion becomes chaotic

Replace style language with a measurable path:

Locked tripod medium shot, level horizon, no zoom, pan, roll, handheld shake, or cut.

After the locked version works, add one slow movement. Combining orbit, push-in, handheld shake, and fast cuts creates instructions that are difficult to reconcile.

The scene gains random objects or text

Simplify the set and state the intended empty areas:

Only one bottle on an empty stone counter. Plain background. No labels, captions, signage, logos, interface elements, or additional props. Reserve the upper-right quarter as clean negative space.

Add real typography later. Even readable generated text still needs claim, spelling, brand, and accessibility review.

Continuity breaks between beats

Use a timeline and repeat the invariant state at each transition:

0–2 s: character stands left of the doorway holding the same blue folder.
2–5 s: character walks directly to the desk; folder remains in the right hand.
5–6 s: character stops at the desk with the folder closed and fully visible.

If the shot changes location or wardrobe, generate separate clips and make the transition editorially.

A controlled retry protocol

1. Save the failed result and original settings.
2. Write one sentence describing the largest visible failure.
3. Identify the prompt sentence or reference most likely responsible.
4. Change only that sentence, reference, or setting.
5. Generate at the shortest useful duration.
6. Compare the same frames in both versions.
7. Keep the revision only if the target failure improves without introducing a larger one.

Stop after a small fixed number of retries. If the same failure persists, change the shot design, use a reference, or move the task to editing rather than spending credits on synonyms.

Reusable negative constraints

Use only the constraints relevant to the observed failure:

No cut or camera shake; maintain a locked frame.
No extra people or objects; keep the background empty.
No generated text, subtitles, logos, watermarks, or interface elements.
No identity, wardrobe, geometry, or color changes.
No floating or sliding; preserve floor and object contact.
End on the specified composition and hold for one second.

For a clean starting brief, use how to write Seedance prompts. For a complete first project, follow the beginner tutorial.

Official context: Dreamina Seedance 2.5 · ByteDance Seedance 2.0 launch.