DeepMotion AI

What is DeepMotion AI?

DeepMotion AI is a cloud-based motion capture and 3D animation platform that generates character animations from video and text input. Founded with the mission to democratize digital human motion, DeepMotion offers two core products: Animate 3D, which extracts full-body, hand, and facial animation from a single 2D video, and SayMotion, which generates 3D animations directly from text prompts using generative AI. Unlike traditional motion capture solutions that require expensive suits, depth cameras, or studio setups, DeepMotion works entirely in a web browser — you upload a video or type a description, and the AI produces a rigged 3D animation ready for export.

DeepMotion is used by indie game developers, filmmakers, VTubers, and 3D artists who need character animation without the hardware overhead. The platform supports up to eight people tracked from a single video, includes face and hand tracking, and exports to standard formats including FBX, BVH, GLB, and MP4. It also offers a Rotoscope Pose Editor for frame-by-frame correction, giving users control over the AI output rather than treating it as a black box.

Key Features

AI Motion Capture from Video (Animate 3D)

DeepMotion's flagship feature extracts 3D skeletal animation from a single 2D video recorded on any device — smartphone, webcam, or DSLR. No motion capture suit, depth sensor, or studio lighting is required. The AI tracks body joints, fingers, and facial expressions simultaneously, and supports up to eight people in a single video. This makes it one of the most accessible multi-person mocap solutions available.

Text-to-3D Animation (SayMotion)

SayMotion generates 3D character animations from text prompts. You type a description like "a person doing a cartwheel and landing in a fighting stance," and the AI produces a corresponding animation. The Inpainting tool lets you extend, blend, or modify existing animations by adding new text prompts, going beyond what static motion libraries offer. This is particularly useful for rapid prototyping and generating custom motions that would be difficult to capture or keyframe manually.

Face and Hand Tracking

DeepMotion captures facial expressions and hand gestures alongside body motion. Face tracking adds 0.5 credit per second of animation, and hand tracking costs the same. This enables full performance capture — body, hands, and face — from a single video source, which is rare among browser-based mocap tools.

Rotoscope Pose Editor

The patent-pending Rotoscope Pose Editor allows frame-by-frame correction of the AI-generated animation. You can trace the character's pose directly over the input video to fix tracking errors, adjust joint positions, and improve accuracy. This addresses the main criticism of AI mocap — imperfect tracking — by giving users a manual refinement tool rather than forcing them to accept the AI output as-is.

Custom Character Support

Users can upload their own FBX, GLB, or VRM characters, or create avatars using built-in integrations with Ready Player Me and Avaturn. The AI automatically retargets animations onto whatever character you choose, regardless of proportions or skeleton structure. This eliminates the need for manual retargeting in external 3D software.

Physics Simulation and Ground Contact

DeepMotion includes physics simulation features such as foot locking (preventing feet from sliding through the floor), hand-to-ground contact detection, and motion smoothing. These post-processing features improve the realism of the output animation and reduce cleanup work in downstream tools like Unreal Engine or Blender.

API and Real-Time SDK

DeepMotion offers an API for integrating AI motion capture into custom applications, as well as a Real-Time SDK for applications that need live motion capture streaming. This makes it suitable for game studios, VR/AR applications, and enterprise workflows that need programmatic access to the mocap pipeline.

Who Should Use It

Indie game developers who need character animations for their games but cannot afford a mocap studio or dedicated animator. DeepMotion's credit-based pricing and free tier make it accessible for small budgets.

Filmmakers and content creators who need quick previs animations or want to animate characters for short films, music videos, or social media content without learning complex 3D animation software.

VTubers and virtual influencers who need real-time or near-real-time facial and body tracking for live streaming. DeepMotion's face tracking from a webcam provides a low-cost entry point.

3D artists and animators who want to use AI mocap as a starting point and refine the output in tools like Blender, Maya, or Unreal Engine. The Rotoscope Pose Editor and standard export formats support this workflow.

Students and educators in game design, animation, or visual effects programs who need access to motion capture for learning and projects without institutional budgets.

Pricing

DeepMotion operates on a credit-based pricing model where 1 credit equals 1 second of animation or 1 3D pose. Face tracking and hand tracking each cost an additional 0.5 credit per second.

• Freemium (Free): No credit card required. 60 seconds of animation per month. Personal, non-commercial use only. Accounts do not expire.
• Paid Plans: Monthly credit allowances with higher limits and commercial licensing. Credits reset monthly and do not carry over.
• Studio Plan: Unlimited credits for unlimited animation creation. The first 7,200 credits per month are processed at Highest Job Priority; remaining credits are processed at Low Job Priority.
• API Plans: Available for high-volume usage. Contact DeepMotion for pricing.

Users can also earn free credits through the Free Animation Credit Program by providing high-quality text labels for their videos and correcting animations in the Rotoscope Pose Editor. Pricing details for specific plans are available on the DeepMotion website.

Pros & Cons

Pros

• No hardware required. Works with any video from any device — smartphone, webcam, or downloaded footage. This is the biggest advantage over traditional mocap.
• Multi-person tracking. Up to eight people from a single video, which competitors like RADiCAL and Plask do not match at this price point.
• Face + hands + body from one video. Full performance capture from a single camera source, which typically requires multiple cameras or specialized hardware.
• Rotoscope Pose Editor. Frame-by-frame correction gives users control over AI output quality, addressing the "black box" problem of AI tools.
• Free tier available. 60 seconds per month with no credit card is enough for evaluation and small projects.
• Text-to-animation (SayMotion). Generative AI for motion from text prompts is a genuinely new capability that traditional mocap cannot provide.

Cons

• Credit system can be limiting. 1 credit = 1 second means a 30-second animation costs 30 credits. Face and hand tracking add extra costs. Heavy users will need paid plans.
• Quality depends on input video. Results degrade significantly with poor lighting, occlusion, fast motion, or non-frontal camera angles. Cleanup in the Pose Editor is often needed.
• No real-time output on free tier. The Real-Time SDK requires contacting sales, and the standard workflow is asynchronous (upload, wait for processing, download).
• Commercial use requires paid plan. The free tier is personal/non-commercial only, which limits its usefulness for professional work without upgrading.
• Browser-based limitations. No offline mode, dependency on internet connection, and processing times vary based on server load and subscription tier.

Alternatives

RADiCAL (Subscription)

RADiCAL offers similar AI motion capture from video with a focus on single-person tracking and higher accuracy for professional use. It provides a Unity plugin for real-time integration and supports export to FBX and BVH. RADiCAL tends to produce cleaner results for single-person videos but does not support multi-person tracking or text-to-animation. It is a better choice for professional animators who prioritize quality over versatility.

Plask (Freemium)

Plask is a browser-based AI mocap tool that offers video-to-animation with a built-in 3D scene editor. It includes a library of characters and environments, making it more of an all-in-one animation tool than DeepMotion's focused mocap approach. Plask is easier for beginners but has fewer advanced features like the Rotoscope Pose Editor or text-to-animation. It is a good alternative for content creators who want to produce finished animations within a single tool rather than exporting to external software.

iClone AI (Freemium/Paid)

iClone by Reallusion is a desktop 3D animation suite with AI mocap from video, facial animation, lip sync, and crowd simulation. Unlike DeepMotion's cloud-only approach, iClone runs locally on Windows and offers a full animation production environment. It has a steeper learning curve and requires a more powerful computer, but provides far more control over the final animation. iClone is better suited for users who need a complete animation pipeline rather than just motion capture. Browse more 3D modeling and animation tools on PureAINav.

Ready to explore more AI-powered 3D animation tools? Visit the 3D Modeling category on PureAINav for a curated selection of the best AI tools for 3D creators.