Seedance 1.5 Pro is a high-quality text-to-video and image-to-video generation model from ByteDance, designed for cinematic, coherent video creation with strong visual consistency. The model produces smooth motion, realistic visuals, and maintains subjects, environments, and style throughout a clip. 1.5 Pro adds native audio-visual generation, producing synchronized dialogue, sound effects, and ambient audio alongside video. This makes it well-suited for storytelling, marketing visuals, and concept-driven video where motion, timing, and sound work together.
Key Features
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Multi-Shot Video Generation
- Seedance 1.5 Pro supports generation of clips with coherent narrative flow, maintaining scene identity, character consistency, and stylistic continuity across video segments when guided by prompts.
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Start & End Frame Control
- Supports image-based start and end frames, allowing creators to define how a scene begins and ends.
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Native Audio-Visual Generation
- Generates synchronized dialogue, sound effects, ambient audio, and music tied to motion and camera direction all within one generation pipeline.
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Multilingual Lip-Sync Support
- Handles accurate lip-sync across multiple languages and dialects, which improves realism in narrative or dialogue-heavy scenes.
Technical Capabilities
- Modalities: Text to Video, Image to Video
- Audio Generation
- Resolution: Generates in 480p or 720p
- Durations: Supports 4 to 12 seconds
- First and Last frame
Best Use Cases
Narrative & Storytelling
Ideal for short narrative clips with synchronized audio, character interaction, and emotional pacing.
Storyboard Visualization
Turn written scripts or still images into visual sequences that approximate final video cuts, including camera movement and sound design.
Talking Head & Avatar Clips
Create expressive character videos or avatars with accurate lip-sync and natural audio vocalization.
Strengths and Limitations
Strengths
- Multi Shot Narrative Coherence: Seedance 1.5 Pro is designed for connected, story-driven outputs rather than isolated clips, enabling smooth visual flow across shots.
- Native Audio-Visual Sync: Generates audio and video jointly in one pass, eliminating separate audio editing and sync work.
- Image-to-Video Start/End Frame Conditioning: Allows users to anchor visuals to keyframes and animate intermediate motion with audio.
Limitations
- Audio Control Is Prompt-Driven: Although audio is generated natively, fine-grained control over exact timing, mixing levels, or specific sound cues is limited to descriptive prompting rather than explicit audio tracks.
Tips for Better Prompts
- Describe Audio Intent Explicitly: Include spoken lines, ambient effects, and music descriptors directly in your text.
- Structure Prompts by Shots: Clearly describe each shot in sequence to guide multi-shot generation and narrative flow.
- Think in Time and Transitions: Describe how scenes evolve with cuts, camera moves, or changes in perspective to help the model maintain temporal coherence.
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