Character.AI has introduced AvatarFX, a new tool that transforms static images into dynamic videos with speech, singing, and expressive movements all with a single click. This technology, developed by Character.AI’s Multimodal team, allows users to create photorealistic videos with synchronized audio, smooth motion, and even long-form content featuring multiple speakers.

The tool is set to be integrated into Character.AI’s platform in the coming months, with early access planned for CAI+ subscribers.

How AvatarFX Works

Creating lifelike videos requires sophisticated technology. AvatarFX uses a flow-based diffusion model, built on a DiT architecture, to generate realistic lip, head, and body movements that align with an audio track. The team developed a unique approach to ensure high visual quality and consistent motion, even in extended videos.

The process starts with a robust dataset, carefully curated to include diverse video styles from realistic humans to mythical creatures and even objects with faces. This variety enables AvatarFX to handle a wide range of creative scenarios. The audio is powered by Character.AI’s proprietary text-to-speech model, ensuring seamless integration with the visuals.

To make the tool efficient, the team employed advanced techniques to reduce processing time without sacrificing quality, making video generation faster and more accessible.

What Sets AvatarFX Apart

AvatarFX stands out for its versatility and precision. It can produce high-quality videos of 2D animated characters, 3D cartoons, and non-human subjects like pets. The tool excels at maintaining consistent movement across faces, hands, and bodies, even in longer videos. Unlike many other platforms, AvatarFX can generate videos from existing images, giving users greater control over the final product.

Key Features:

1. High-quality video generation for animated and non-human characters.
2. Smooth, consistent motion in long-form videos.
3. Video creation from pre-existing images for enhanced customization.

Bringing AvatarFX to Users

Character.AI is focused on making AvatarFX user-friendly and widely available. The team is optimizing every aspect of the platform, from GPU management to media delivery, to ensure a seamless experience. The goal is to make video creation as simple as pressing a button, whether you’re a seasoned creator or a first-time user.

A Commitment to Safety

Safety is a top priority for Character.AI. AvatarFX includes strict measures to prevent misuse, such as deepfakes or harmful content. All user-uploaded dialogue is screened through safety filters, and the platform blocks video generation using images of minors, public figures, or recognizable individuals. Generated videos are watermarked to clarify they are not real, and users must adhere to strict terms of use that prohibit impersonation, bullying, or unauthorized use of protected content.

Character.AI plans to refine these safeguards as the tool develops, ensuring a safe and enjoyable experience for all users.

AvatarFX is poised to open new creative possibilities, empowering users to tell stories in vibrant, engaging ways. As Character.AI works to bring this tool to its platform, the focus remains on accessibility, ease of use, and community safety.