Seedance 2.0 is an advanced multimodal video generation model developed by ByteDance's Seed team. It serves as the core engine for the AI video features on the Dreamina platform (and its Chinese counterpart, Jimeng). The model is designed to produce cinematic, high-fidelity video content with a specific focus on physical accuracy, character consistency, and native audio synchronization. Unlike traditional text-to-video systems, Seedance 2.0 operates as a "multimodal director" capable of synthesizing complex, multi-shot sequences from a variety of reference materials.
Built on a unified multimodal audio-video architecture, the model utilizes a dual-branch Diffusion Transformer to jointly generate video and audio in a shared latent space. This architecture allows the model to process up to 12 reference files simultaneously across four modalities: text, image, video, and audio. By encoding these inputs into spatiotemporal tokens, the system ensures that visual events—such as an object colliding or a character speaking—are perfectly synchronized with corresponding sound effects and lip-syncing in the generated output.
A primary innovation of Seedance 2.0 is its Reference Cluster and Binding Logic system. Users can utilize the @ symbol in prompts to bind specific uploaded assets to narrative instructions, such as using an image for character identity, a video clip for camera movement, and an audio file for rhythmic guidance. The model includes an internal narrative planner that performs shot decomposition, allowing it to generate 4- to 15-second clips that feature natural cuts between different camera angles while maintaining stable lighting and character features across the entire sequence.
In addition to its structural consistency, the model demonstrates high proficiency in simulating real-world physics, including fluid dynamics, gravity, and complex human interactions like sports or dancing. It supports multiple aspect ratios (9:16, 16:9, and 1:1) and provides output resolutions ranging from 720p for social media workflows to 2K for professional cinematic applications.