Seedance 1.5 Pro AI Video Generator
ByteDance's revolutionary joint audio-video model with 4.5 billion parameters. Generate cinematic videos with perfectly synchronized lip-sync, immersive 3D soundscapes, and 15+ professional camera movements in a single pass.
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Key Features
Joint Audio-Video Generation
Generate synchronized video and audio in one pass using the Dual-Branch Diffusion Transformer (DB-DiT) architecture, processing both streams in a shared latent space
Millisecond-Precise Lip Sync
True lip-sync technology locks phonemes to visemes with millisecond precision, supporting 8+ languages including English, Japanese, Korean, Spanish, Portuguese, Indonesian, and Chinese dialects
Cinematic Camera Control
Execute 15+ professional camera movements including tracking shots, dolly zoom, push-ins, crane movements, and Hitchcock techniques — intelligently applied based on narrative context
3D Spatial Sound Design
Intelligent scene analysis generates layered environmental sounds with professional depth and immersion
Multilingual Voice Support
Native support for English, Japanese, Korean, Spanish, Portuguese, Indonesian, plus Chinese dialects like Cantonese, Sichuanese, and Shaanxi
Physics-Audio Synchronization
Automatically sync audio spikes to visual events — glass shatters, footsteps, and impacts perfectly aligned
Seedance 1.5 Pro Video Gallery
Explore videos created with this model
Pricing
Transparent credit-based pricing
No Audio
credits per video
With Audio
credits per video
No Audio
credits per video
With Audio
credits per video
No Audio
credits per video
With Audio
credits per video
No Audio
credits per video
With Audio
credits per video
No Audio
credits per video
With Audio
credits per video
No Audio
credits per video
With Audio
credits per video
How to Use
Create cinematic videos with synchronized audio in three steps
Choose Input Type
Select text-to-video for prompts or image-to-video to animate still photos
Craft Your Prompt
Describe the scene, dialogue, sound effects, and camera movements you want
Generate & Download
Generate your video with synchronized audio and download when ready
Choose Input Type
Select text-to-video for prompts or image-to-video to animate still photos
Craft Your Prompt
Describe the scene, dialogue, sound effects, and camera movements you want
Generate & Download
Generate your video with synchronized audio and download when ready
Technical Specifications
Use Cases
Short Drama & Narrative
Create compelling short dramas with synchronized dialogue, emotions, and cinematic storytelling
Commercials & Ads
Produce professional product promos with perfect audio-visual sync and brand messaging
Localized Content
Generate region-specific content with native dialect support for global markets
Game Cutscenes
Create immersive game cinematics with spatial audio and dynamic camera work
Social Media
Generate engaging short-form content for TikTok, Reels, and YouTube Shorts
Stage Performances
Produce stage-style performances with synchronized music, dialogue, and sound effects
Related Video Models
Frequently Asked Questions
Find answers to common questions about this model
Seedance 1.5 Pro is ByteDance's advanced joint audio-video generation model with 4.5 billion parameters. Unlike traditional "video + dubbing" approaches, it uses a Dual-Branch Diffusion Transformer (DB-DiT) architecture to synthesize sound and vision simultaneously in a single unified process.
It features true lip-sync with millisecond precision, physics-audio synchronization where audio spikes match visual events exactly, and 3D spatial soundscapes with layered environmental effects based on scene depth.
The model natively supports English, Japanese, Korean, Spanish, Portuguese, Indonesian, and multiple Chinese dialects including Cantonese, Sichuanese, and Shaanxi for authentic localized storytelling.
It generates videos of 4-15 seconds in 480p or 720p resolution across multiple aspect ratios (16:9, 9:16, 1:1, 4:3, 3:4, 21:9). Production-quality 720p videos are generated in approximately 2-3 minutes thanks to 10x inference acceleration.
The model executes 15+ professional cinematic techniques including close-ups, full shots, tracking shots, dolly zoom, push-ins, crane movements, and POV perspectives — intelligently chosen based on narrative context.
It supports both Text-to-Video (T2V) and Image-to-Video (I2V), with additional features like video extension and end-frame conditioning for precise creative control.
While other models focus on world-building or physics simulations, this model excels at precise audio-visual synchronization. It's designed as a production tool for creators who need tight audio-video integration, with native dialect lip-sync being a unique capability as of 2026.
It is ideal for short narratives, commercials, product promos, localized short dramas, stage-style performances, game cutscenes, and any content benefiting from tight audio-visual integration.
Start Creating with Seedance 1.5 Pro
Experience the future of AI video generation with synchronized audio-visual content