Seedance 1.5 Pro
Automatic Audio Matching for Seedance 1.5 Pro
Seedance 1.5 Pro intelligently generates audio that aligns with on-screen action. Voices, ambient sound, and effects are timed to key moments so every scene feels natural and immersive—balanced, high-quality audio without extra editing or manual sync.
Multilingual and Dialect Support in Seedance 1.5 Pro
Seedance 1.5 Pro supports a wide range of languages and regional dialects, including English, Mandarin, Japanese, Korean, Spanish, Indonesian, Shaanxi dialect, and Sichuan dialect. It maintains natural pronunciation, tone, and rhythm so generated speech sounds authentic and locally accurate across different regions.
BGM Style and Atmosphere Control
Seedance 1.5 Pro generates background music and ambient sound that match each scene. It selects suitable BGM styles, moods, and sound effects to support visual rhythm and strengthen the overall atmosphere of the video, creating a more immersive viewing experience.
Seedance 1.5 Pro Features for Cinematic Audio-Visual Creation
Native audio-visual generation
Seedance 1.5 Pro creates video and sound in a single pass, aligning dialogue, ambient effects, and music with on-screen action so every scene ships with natural timing and millisecond-level lip-sync.
Cinematic camera and lens control
Toggle fixed or dynamic lenses, define aspect ratios from 1:1 to 21:9, and pair 480p, 720p, or 1080p output with smooth camera choreography to keep motion stable and visually polished.
First and last frame guidance
Set opening and closing frames so Seedance 1.5 Pro preserves composition, character identity, and lighting across the full 4–12 second sequence, making narratives and transitions feel intentional.
Multilingual dialogue fidelity
Seedance 1.5 Pro supports English, Mandarin, Japanese, Korean, Spanish, and regional dialects while keeping pronunciation, tone, and rhythm authentic for global stories without post dubbing.
How to Use Seedance 1.5 Pro
Upload images (optional)
Add up to 2 references to lock framing, outfits, or product angles.
Write the prompt
Describe subject, action, lighting, dialogue. Keep it specific (max 5000 chars).
Select format
Pick aspect ratio and resolution before rendering.
Camera & audio
Enable Fixed Lens for stable framing; toggle Generate Audio for built-in VO/SFX/BGM.
Visibility
Choose public or private before you hit Create so access matches your workflow.
Submit
Click Create. Your render and audio land together in My Creations when ready.
Best for social
9:16 · 1080p · 8s
Cinematic shot
21:9 · 1080p · Fixed Lens
Fast preview
16:9 · 480p · 4s
Dialogue ready
Generate Audio · set language in prompt
Quick Tips
- Use Fixed Lens with 21:9 for cinematic establishing; toggle off for tracking/orbit moves.
- 4s clips preview motion fastest; 8–12s add story beats and smoother pacing.
- Prompt with camera angle, time of day, mood, and any dialogue lines for lip-sync accuracy.
- When Generate Audio is on, specify language ("Spanish VO") to tighten pronunciation.
Frequently Asked Questions
Seedance 1.5 Pro is ByteDance’s AI video model generating synchronized audio and visuals, enabling cinematic content creation from prompts with native lip-sync and storytelling capabilities. 
Seedance 1.5 Pro adds joint audio-video generation, multilingual lip-sync, cinematic camera control, faster inference, and stronger narrative consistency than Seedance 1.0. 
Yes. Seedance 1.5 Pro natively generates synchronized audio, dialogue, sound effects, and music together with video in a single production pipeline. 
Yes. Seedance 1.5 Pro supports first-frame guidance and start-to-end frame control for consistent motion, composition, and storytelling in generated videos. 
Yes. Seedance 1.5 Pro supports multilingual prompts and lip-sync across languages and dialects, including English, Chinese, Japanese, Korean, and Spanish.