Seedance 2.0 Deep Dive

Use this skill when shot-specifier routes a shot to seedance_2_0 or when video-generator is about to submit Seedance 2.0 jobs through the Higgsfield Model Context Protocol (MCP).

Seedance 2.0 is best treated as a constraint-driven multimodal video model, not a text-prompt toy. Text describes the new action. Images, video, and audio references carry identity, style, motion, rhythm, and continuity. The practical skill is deciding which constraints matter, passing them explicitly, and keeping each clip short enough that the model does not drift.

Live-Schema Rule

Before any production generation, inspect the live Higgsfield MCP schema through video-generator. Public guidance and creator reports disagree on exact model IDs, quality modes, file limits, duration ranges, and reference roles.

Use the limits below as planning defaults only. If the live MCP schema is narrower, follow the live schema. If the required references cannot be supplied, stop and ask for a production decision.

S01 session 2 observed that the current Higgsfield MCP accepted a Seedance resolution=1080p input while still downloading 1344x768 video, and auto-enabled generated audio without exposing a generate_audio input key. Treat resolution settings as schema-gated quality hints until the downloaded pixels prove otherwise. Treat audio toggles as intent records unless the live schema exposes them.

When Seedance 2.0 Is The Right Route

Prefer Seedance 2.0 when the shot needs:

• consistent character, costume, product, prop, or recurring visual element identity;
• multiple image references acting as hard creative constraints;
• a short but polished action beat, hook, transformation, product move, or b-roll shot;
• audio-driven pacing from a chosen track, ambience, voice, or sound-effect reference;
• campaign or sequence coherence across many clips;
• image-to-video work from carefully designed start and end frames.

Do not default to Seedance 2.0 when the main requirement is maximum native resolution, long single-shot duration, low-setup one-off generation, exact on-screen text, complex hands, or a large multi-character scene with many competing subjects. Consider Kling for camera-motion-heavy exteriors or motion-control work; consider Veo/native-audio routes when generated audio is the asset rather than an input constraint.

Planning Defaults

Multimodal Input Rules

Treat each input as responsible for one job. Avoid overlapping references that ask for different styles, lighting, faces, or motion in the same slot.

Planning limits commonly reported for Seedance 2.0:

• up to 12 files total across images, videos, and audio;
• up to 9 image references;
• up to 3 video references, with short clips preferred;
• up to 3 audio references, with clean, short clips preferred;
• generated output commonly planned in the 4-15 s range.

Verify those values against the live Higgsfield MCP before generation.

Prioritize file slots in this order:

1. Start and end frame anchors when the workflow requires them.
2. Principal character or product identity.
3. Active hero prop and recurring visual elements.
4. Specific location or set layout.
5. Motion or camera reference video.
6. Audio reference for beat, mood, voice, or ambience.
7. Style reference.
8. Supporting detail references.

If the tool exposes input weights, start here:

Raise a weight only when that input is underrepresented. Lower it when it dominates the shot or pulls the output away from higher-priority continuity.

Reference Prompting

Use @ references or the MCP's equivalent media-role syntax with a declared purpose. Never pass references as an undifferentiated pile.

Bad:

Use @Image1, @Image2, and @Video1 to make this cinematic.

Good:

@Image1 for Switch's exact face, hair, and jacket. @Image2 for the control-room monitor
layout and screen colours. @Video1 for the slow handheld push-in only, not its lighting.

For character consistency, use the same master character image or small character package in every shot where the character appears. State that facial features, build, hair, and costume identity must remain exact. For recurring visual elements, pass the locked reference every time the element is visible.

Prompt Structure

For simple image-to-video shots:

Subject + Action + Scene + Camera + Style

Keep the prompt concrete. One subject, one action, one place, one camera idea. Use verbs and timing, not mood labels alone.

For multimodal production shots, use CRAFT:

For multi-shot prompts, specify shot structure up front:

Total: 8 s / 2 shots / 16:9.
Shot 1, 0-4 s: ...
Shot 2, 4-8 s: ...

For one continuous shot, say so explicitly and add camera negatives:

Single continuous shot. No cuts, no zoom, no angle changes, natural head movement.

Format Patterns

Use these patterns as starting points, not templates to paste blindly.

Narration is handled outside this video-generation workflow. Do not request generated narration from Seedance. If the live route forces generated audio on and cannot disable it, proceed only for ambience/sound-effect-friendly atmosphere shots where the audio will be accepted or muted downstream; stop for dialogue, lip-sync, supplied-audio, music-timed, or narration/post-audio shots.

Settings Sweep

When a shot is not working, change one variable per run. Keep prompt, seed, and references fixed unless that variable is the thing being tested.

1. Duration: compare 6 s against 8-10 s. If the shorter clip is cleaner, split the

shot.

1. Aspect ratio: test the target ratio with one line rewritten for composition

pressure: single subject for 9:16, controlled background for 16:9.

1. Quality: raise quality only after the first two seconds are stable.
2. Reference weights: increase the missing constraint; reduce the dominant,

unhelpful one.

1. Seed: keep a good seed for refinement; refresh if colour or identity keeps

drifting despite coherent references.

Stop tweaking settings when the shot concept itself is overloaded. Split, simplify, or return to shot-specifier for a new shot design.

Failure Rules

Handoff Rules

shot-specifier should use this skill before Phase 7 when a shot is routed to seedance_2_0. It should emit:

• why Seedance 2.0 is the recommended model;
• duration and aspect ratio chosen using the defaults above;
• required reference files with explicit purpose;
• any planned motion or audio references;
• whether the prompt is single-shot, multi-shot, POV, transformation, product,

animation/VFX, or audio-synced;

• a concise ## Generation Prompt suitable for the Higgsfield MCP.

video-generator should use this skill when submitting Seedance 2.0 jobs. It should validate:

• exact live MCP model ID for Seedance 2.0;
• live duration, resolution, quality, and aspect-ratio support;
• whether the route accepts start/end frames, generic image references, video

references, audio references, weights, seeds, and quality modes;

• whether every required reference can fit inside the live file limit.

If live tool limits prevent the reference plan from being supplied, stop. Do not drop a character, prop, recurring visual element, start frame, or end frame to make the call fit.