Seedance 2.0 Multimodal Input: A Complete Breakdown
If you are still making AI video with “text-only prompts and endless rerolls,” you are likely missing the core upgrade in Seedance 2.0. Built on a unified multimodal audio-video architecture, Seedance 2.0 accepts text, images, audio, and video in a single workflow—up to 12 reference files at once (9 images + 3 videos + 3 audio tracks + natural-language instructions). For creators who need control over character look, camera motion, and AV sync, multimodal input is not a nice-to-have—it directly affects output quality.
This Seedance tutorial walks through all four input modalities, the @ reference system, and common production scenarios so you can start quickly—even via the Seedance Chinese version interface.
1. Why Multimodal Input Matters Now
Many earlier tools accepted text only. The finer your description, the more the model had to guess—character appearance, camera moves, music tempo. In real projects, teams already have look frames, reference clips, BGM, or voiceover that could not be fed directly into the model.
Seedance 2.0 puts four modalities on one generation path: the model reads text semantics, image visuals, video motion and camera language, and audio rhythm together, then outputs video with native audio tracks. Compared with 1.5, complex interaction and motion scenes are more usable and closer to ad, short-drama, and social workflows.
2. Four Input Modalities Explained
2.1 Text: State Your Intent Clearly
Text remains the foundation, but Seedance 2.0 handles long instructions, shot lists, and style keywords much better. You can:
- Write full scene narratives (subject, environment, action, camera, style);
- Use storyboard-style multi-shot descriptions;
- Pair with @ references to assign each asset a role.
Example: “@Image1 for the lead’s face, @Video1 for follow-cam motion, @Audio1 as background music—the character walks through a neon night market, camera follows from behind, then turns to smile at lens.”
2.2 Images: Lock Character and Visual Style
Images are the most common reference type. Upload look frames, scene boards, brand VI, or style plates—the model extracts face, wardrobe, color, and composition and keeps them relatively stable across shots.
| Typical Use | Notes |
|---|---|
| Character look | Replicate face and outfit across shots |
| Scene reference | Fix environment, lighting, and palette |
| Style plate | Unify ad and e-commerce visuals |
| First frame | Control opening composition |
Up to 9 images; JPG, PNG, WebP supported.
2.3 Audio: Rhythm, Dialogue, and Mood
Seedance 2.0 accepts uploaded audio and can output native synchronized tracks. Audio input is used for:
- Background music: beat-synced editing and pacing;
- Voiceover/dialogue: lip-sync (Mandarin, Cantonese, English, and more);
- Ambient SFX: stronger scene atmosphere.
Up to 3 audio tracks, total length typically within 15 seconds; MP3, WAV, M4A supported.
2.4 Video: Visual Reference for Camera and Motion
Upload reference clips and the model extracts camera movement, body motion, rhythm, and VFX style—without translating everything into text. Common cases:
- Follow, orbit, dolly, or push-pull camera references;
- Dance or action choreography;
- Extend or complete scenes from existing footage.
Up to 3 videos, per-clip and total duration limits (typically ≤ 15s); MP4, MOV supported.
3. The @ Reference System: Assign Every Asset a Job
@ references are what make multimodal input practical. After upload, mark @Image1, @Video1, @Audio1 in your prompt so the model knows each file’s role instead of guessing.
| Tag | Common Role |
|---|---|
| @Image1 | Face / wardrobe / scene |
| @Video1 | Camera motion / action tempo |
| @Audio1 | BGM / lip-sync voiceover |
| Text | Story, style, duration |
Combo example (image + video + audio):
Use @Video1 first-person framing throughout.
@Audio1 as background music, edits on the beat.
Character from @Image1 walks a neon night market, camera follows from behind,
matching movement style in @Video1—pause, turn, smile.
Cinematic night look, rich color, shallow depth of field.Clear @ roles dramatically improve controllability.
4. Core Specs at a Glance
| Item | Spec |
|---|---|
| Input modalities | Text + image + video + audio |
| Reference file cap | 12 total (9 images + 3 videos + 3 audio) |
| Clip length | 4–15 seconds |
| Resolution | 480p / 720p / 1080p (Pro up to 2K) |
| Aspect ratios | 16:9, 9:16, 1:1, 4:3, 3:4, 21:9 |
| Audio | Native AV sync, multilingual lip-sync |
| Frame rate | 24fps |
5. Three Common Production Scenarios
5.1 Short-Form and Social Content
Teams often need volume with the same IP and look. Lock character with images, camera language with video references, and vary scripts in text—iterate faster with fewer rerolls.
5.2 Brand Marketing Assets
Brands demand VI consistency. Upload logo, key visuals, and style boards plus text prompts to generate ad or social clips with unified tone—more reliable than text-only generation.
5.3 Education and Knowledge Video
Upload lecture or narration audio for lip-synced visuals; add scene reference images for low-cost multimodal teaching content.
6. Getting Started: A Four-Step Workflow
- Define the deliverable: ad, short drama, social clip; duration and aspect ratio.
- Prepare references: character, camera, BGM as needed—you do not need all 12 files every time.
- Write prompt + @: story first, then bind each asset; avoid conflicting instructions.
- Iterate small: generate 4–6s to validate character and camera, then extend to 10–15s.
FAQ
Q: Must I use all four modalities?
A: No. Text-only works; one or two images are fine. Mix as needed.
Q: How do @ numbers map?
A: By upload order—first image is @Image1, first video @Video1, etc. Keep numbering consistent in the prompt.
Q: Do images guarantee 100% consistency?
A: Multi-shot consistency beats text-only by a wide margin, but complex multi-subject or extreme angle changes can still drift—use a fixed test set.
Q: Does uploaded audio appear in the final clip?
A: The model can follow audio rhythm and also generate native dialogue, SFX, and music depending on your prompt and mode.
Ready to test multimodal input yourself? Use the entry below to open Seedance 2.0—full multimodal workflow, including the Seedance Chinese version UI.
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