Seedance 1.5 Pro
Generate cinematic videos with native audio in a single pass. Multilingual lip-sync, expressive motion, and cinematic camera control -- powered by a 4.5B parameter model.
What is Seedance 1.5 Pro?
Seedance 1.5 Pro is ByteDance's next-generation AI video model built on a 4.5B parameter Dual-Branch Diffusion Transformer (DB-DiT). Unlike other models that generate video only, Seedance produces synchronized video and audio in a single forward pass -- making it the first native audio-visual joint generation model.
Key Capabilities
What makes Seedance 1.5 Pro stand out from other AI video models
Native Audio Generation
Generates synchronized sound effects, ambient audio, and speech with accurate lip-sync in a single pass. No post-processing needed.
Multilingual Lip-sync
Supports lip-synced speech in 8+ languages including English, Chinese, Japanese, Korean, Spanish, Portuguese, and Indonesian.
Cinematic Camera Control
Execute professional camera movements like Hitchcock zooms, tracking shots, and whip pans -- all described in natural language prompts.
Expressive Human Motion
Captures nuanced micro-expressions, emotional shifts, and rhythm-aware body movement with film-grade acting quality.
Character Consistency
Maintains consistent character appearance, clothing, and identity across multiple shots and scene transitions.
Flexible Output Options
Generate videos from 4 to 12 seconds at 480p or 720p, with 6 aspect ratios including ultrawide 21:9 for cinematic content.
Frequently Asked Questions
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