Native Audio + Lip-Sync Workflows
Generate sound and picture together for dialogue-led scenes, avatar content, dubbed marketing clips, and beat-aware edits.
Powered by ByteDance Seedance 2.0, 2.0 Fast, and 2.0 Mini
Seedance 2.0 Family Video Generator – Native Audio, Multimodal References, Smart Duration
Generate videos with Seedance 2.0 and Seedance 2.0 Fast using native synced audio, reference images, reference videos, reference audio tracks, adaptive aspect ratio, and auto duration.
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Seedance Version Comparison
Compare Seedance 2.5, the 2.0 family, and Seedance 1.5 Pro, 1 Pro, 1 Pro Fast, and 1 Lite.
| Model | Max duration | Resolution | Reference images | Reference videos | Reference audios | Best for |
|---|---|---|---|---|---|---|
| Seedance 2.5 Flagship production model | 30s (Auto supported) | 480p, 720p | 30 | 10 | 10 | Long-form clips, complex reference sets, production delivery |
| Seedance 2.0 High-quality multimodal video | 15s (Auto supported) | 480p, 720p, 1080p | 9 | 3 | 3 | 1080p final renders and reference-heavy creative control |
| Seedance 2.0 Fast Faster iteration variant | 15s (Auto supported) | 480p, 720p | 9 | 3 | 3 | Prompt testing, batch exploration, quick drafts |
| Seedance 2.0 Mini Lower-cost high-volume variant | 15s | 480p, 720p | 9 | 3 | 3 | High-volume generation with the same multimodal workflow |
| Seedance 1.5 Pro Cinematic audio-video model | 12s | 480p, 720p, 1080p | First and last frame | — | Optional synced audio | Cinematic text-to-video and image-to-video with optional generated audio |
| Seedance 1 Pro Pro text and image to video | 12s | 480p, 720p, 1080p | First and last frame | — | — | 1080p cinematic clips with a controllable camera |
| Seedance 1 Pro Fast Faster Seedance 1 Pro | 12s | 480p, 720p, 1080p | First frame | — | — | Quicker, lower-cost drafts from a prompt or one image |
| Seedance 1 Lite Lightweight reference model | 12s | 480p, 720p, 1080p | 4, or first and last frame | — | — | Lower-cost clips guided by up to four reference images |
What this workflow is good at
Reference-Guided Consistency
Use reference images for style and identity, reference videos for motion or edit intent, and reference audio for timing cues.
Spoken product demos
Pair dialogue prompts with native audio generation for product explainers that do not need a separate dubbing pass.
Reference-led ad variants
Keep character styling and camera language stable across multiple campaign outputs using uploaded reference images and clips.
Audio-driven short-form video
Use reference audios for lip-sync, beat timing, or pacing when generating reels, vertical ads, and presenter clips.
Image-to-video with defined ending
Combine first-frame and last-frame images to steer the clip from a known starting composition to a specific final shot.
How it works
1
Step 1: Write the shot and audio intent
Describe scene layout, subject motion, camera language, and any spoken dialogue. For dialogue, use double quotes so the model can align speech and mouth movement.
2
Step 2: Add reference assets
Upload optional first-frame, last-frame, reference images, motion reference videos, or reference audio clips depending on how much control you need.
3
Step 3: Let the Seedance 2.0 model render
Choose a resolution, set an aspect ratio or Adaptive, then render with Seedance 2.0 for 1080p final output or Seedance 2.0 Fast for quicker 480p/720p iteration.
How to use it
The Seedance 2.0 Family is ByteDance's multimodal video lineup for creators who need native audio, reference-driven control, and flexible output quality. Seedance 2.0 is the higher-quality path, while Seedance 2.0 Fast is the quicker variant for iteration.
The biggest practical change is native audio generation. Instead of treating sound as a separate post-process layer, the Seedance 2.0 Family can generate dialogue, ambience, and effects together with the visual sequence. That makes these models a stronger fit for presenter clips, spoken product demos, dubbed creative, and sound-led short-form ads.
Reference images help hold onto character identity, wardrobe, style, and scene composition. Reference videos help transfer motion, pacing, or edit intent. Reference audio gives the model timing cues for lip-sync and beat matching. When combined carefully in the prompt, these references reduce guesswork and make outputs more repeatable.
If you need quicker iteration, Seedance 2.0 Fast uses the same input structure and multimodal controls while prioritizing speed over top-end quality. That makes it useful for prototyping, batch exploration, and high-volume content pipelines before switching back to Seedance 2.0 for final renders.
The Seedance 2.0 Family also introduces intelligent duration control. Sending duration as -1 lets the model choose a suitable output length instead of forcing a fixed clip length too early. This is useful when the prompt and reference material imply a natural beat that is hard to pre-size manually.
On framing, Seedance supports adaptive aspect ratio in addition to fixed ratios like 16:9, 9:16, and 1:1. Adaptive is useful when you want the model to infer the most appropriate layout from your inputs, especially when working with mixed reference media.
A good Seedance 2-family prompt usually does three things clearly: identify the primary subject, describe the intended motion or edit behavior, and tell the model how to interpret any attached references. The more explicit that mapping is, the more consistent the results tend to be.
Keep exploring Seedance
- Seedance 2.5 Generator
Generate up to 30-second clips with larger reference sets and native synced audio.
- Seedance 2.0 Family
Generate with Seedance 2.0, 2.0 Fast, and 2.0 Mini in one shared studio workflow.
- AI Video Generator
Switch between Seedance 2.5 and the Seedance 2.0 family in the studio.
- Seedance 2.5 vs 2.0
Read a practical comparison of duration limits, reference caps, and output quality.
- Seedance 2.0 vs 1.5 Pro
See how the multimodal 2.x family differs from the earlier cinematic baseline.
- Seedance 2.0 Prompt Examples
Review prompt patterns for dialogue, references, and audio-led scenes.
Frequently Asked Questions
Start generating
Generate videos with Seedance 2.0 and Seedance 2.0 Fast using native synced audio, reference images, reference videos, reference audio tracks, adaptive aspect ratio, and auto duration.