doubao-seedance-1-5-pro-251215
API Overview
The DouBao video generation model Seedance 1.5 Pro is a professional-grade audio-visual synchronization video generation model launched by ByteDance, positioned as a “cinematic-level narrative creation engine.” Leveraging exclusive audio-video joint generation technology, it achieves millisecond-level audio-visual alignment and cinematic-quality dynamic expression, redefining the standards for AI video creation.
- High-Precision Audio-Visual Synchronization: Supports multi-element millisecond-level alignment of ambient sounds, action sounds, human voices, musical instruments, and more, generating videos with audio or pure videos at lower costs compared to similar models.
- Cinematic-Level Narrative Capability: Features a uniquely developed start-and-end-frame control technology, allowing users to lock the visual style, composition, and character positioning by setting the start and end frames, driving the generation of smooth, dynamic videos and significantly enhancing creative controllability.
- Multilingual Dialogue Support: Covers 6 languages including Chinese, English, Japanese, Korean, as well as Shaanxi dialect and Sichuan dialect, achieving precise lip-sync in multi-person dialogue scenarios and making it suitable for professional applications such as film and television production and advertising.
- Enhanced Dynamic Expression: Building on the multi-camera narrative capabilities of Seedance 1.0 Pro, it boosts motion amplitude and emotional expression, accurately capturing action details (such as synchronizing the “splash” sound of waves hitting the shore with the “plop” sound of a character stepping into the water).
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Core Capabilities
🎬 Audio-Visual Joint Generation
Exclusively supports synchronized output of audio and video; automatically matches ambient sounds (such as the “whooshing” of sea breeze), action sounds (such as the “crackling” of footsteps in water), and human voices, enabling “sound effects that dynamically change with the visuals.”
🎭 Professional Multilingual Dialogue
Supports multi-person dialogue scenarios with lip-sync accuracy reaching cinematic standards, and natural dialect performance (for example, a Shaanxi-dialect character says: “This headscarf is giving me a headache”).
🎥 Start-and-End Frame Cinematic Control
Locks the narrative tone through the start frame (a glowing square door shrouded in smoke) and the end frame (a character walking toward a light source), generating coherent shots with camera movements and evolving character emotions.
⚡Cost-effective deployment
Low batch inference cost, supporting up to 10 concurrent tasks, meeting the high-frequency creation needs of e-commerce advertising, webtoon production, and other applications.
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Performance Comparison (Seedance Series)
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Effect Demonstrations
API Console
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