Seedance 1.5 Pro AI Video Generator

Seedance 1.5 Pro uses a Dual‑Branch Diffusion Transformer (DB‑DiT) with 4.5 billion parameters. One branch handles video generation while the other handles audio, and a cross‑modal joint module keeps them perfectly synchronized throughout the diffusion process.

This means the audio isn't layered on afterward — it's an integral part of the generation. When a character speaks, their lips move in exact time with the sound. When something explodes on screen, you hear it at the precise moment it happens.

Create short films with coherent narratives across multiple shots. The model maintains character consistency — clothing, faces, and style stay the same across different scenes, making it possible to tell complete stories with a cinematic look and feel.

Combine this with the camera control system to shoot everything from dialogue‑heavy close‑ups to sweeping action sequences, all with synchronized audio.

Generate professional product demonstrations with voiceovers and polished camera movements. The model understands complex cinematography techniques like dolly zooms and tracking shots, giving your marketing materials a production‑quality finish without a film crew.

Create the same video in multiple languages with natural lip‑syncing for each one. No reshooting or dubbing needed — just describe the scene and specify the language or dialect. This is game‑changing for brands that need localized content at scale.

Animate still photos with synchronized speech, singing, or narration. The model analyzes facial structure and timing to match mouth movements with audio, whether it's a character delivering a monologue, a singer performing, or a narrator guiding a story.

The model isolates moving subjects from their environment, keeping backgrounds static and realistic while characters move. This prevents the warping and morphing artifacts that plague many video generation models, resulting in cleaner, more professional output.

Start with clear, descriptive prompts that explain what's happening in the scene. Include details about camera movement if you want specific cinematography.

For dialogue or speech, specify the language and any emotional tone. The more context you provide, the better the model can generate appropriate lip movements and audio.

If you're creating multiple shots for a story, describe character details consistently across prompts to help maintain visual continuity.

For image‑to‑video generation, use clear photos where faces and subjects are well‑defined. This helps the model create more accurate animations and lip‑sync.