InfinityHuman - Long video digital human generation model launched by Bytes in collaboration with ZJU

What is InfinityHuman?

InfinityHuman is a commercial-grade long time-series audio-driven character video generation model jointly launched by ByteDance and Zhejiang University. The model is audio-driven and can generate high-resolution, long duration and visually consistent character videos. The model features natural hand movements, identity consistency and mouth synchronization, and is capable of generating videos with diverse character styles.InfinityHuman is suitable for virtual anchors, online education, customer service, film and television production, virtual social networking, and other fields, bringing new breakthroughs in the field of AI digital humans.

InfinityHuman Features

• Long duration video generation: Supports the generation of high-resolution, long-duration character animation videos, maintaining visual consistency and stability, suitable for a variety of application scenarios.
• Natural hand movements: Based on a hand-specific reward mechanism, it generates natural, accurate and speech-synchronized hand movements to enhance the realism of the video.
• identity consistency: Using pose-guided refiners and first frames as visual anchors reduces cumulative errors and ensures long-term consistency of character identities across long duration videos.
• lip sync: Ensure that the lip movements of the characters in the generated video are highly synchronized with the audio, enhancing the overall naturalness of the video.
• Diverse character styles: Support different styles of character generation to meet the needs of a variety of application scenarios, such as virtual anchor, online education, customer service and so on.

InfinityHuman's Core Benefits

• high stabilityThe unique generation method can effectively reduce the accumulation of errors in the long-time generation, so that the video remains stable throughout the whole process, avoiding the "collapse" of the screen.
• Hand movement optimization: Based on a special mechanism to make hand movements natural and smooth, and highly synchronized with voice and expression to make avatar communication more realistic.
• Identity remains preciseThe following is an example: visual anchors and stabilizing gesture sequences ensure that the character identity remains consistent over long periods of time without "face-switching".
• Lip Synchronization and Precision: Using low-resolution motion guides and refiners, lip movements are highly matched to the audio, enhancing the overall naturalness of the video.
• leading performance: Outperforms existing technologies in a number of key metrics, demonstrating superior video generation quality and advancing the industry.
• wide range of adaptability: It can generate multiple styles of roles to meet the needs of different scenarios, with strong versatility and flexibility.

What is InfinityHuman's official website?

• Project website:: https://infinityhuman.github.io/
• arXiv Technical Paper:: https://arxiv.org/pdf/2508.20210

Who InfinityHuman is for

• content creator: Rapidly generate high-quality avatar video content, improve the efficiency of creation, suitable for producing virtual anchor video, animated short films and so on.
• educator: Used in the development of more interactive and engaging online education courses, allowing AI teachers to teach in a more natural and lively way to improve teaching effectiveness.
• Film & TV Production Team: The ability to quickly generate high-quality character animation in the production of animated movies, TV series, etc., reducing manual drawing and post-production restoration workload.
• Customer service industry practitioners: Provide a more vivid image of digital customer service image for the customer service field, so that the communication between customers and customer service is more natural and humanized, and enhance the customer experience.
• Virtual Social Platform Developer: In virtual reality (VR) and augmented reality (AR) virtual socialization scenarios, it provides users with a more realistic and immersive avatar interaction experience and enhances communication between users.