NVIDIA Audio2Face

NVIDIA Audio2Face is a neural audio-driven facial animation application released by NVIDIA as part of the Omniverse developer ecosystem. Built from research on audio-to-visual mapping and real-time inference, Audio2Face positions itself as a production-grade tool for converting speech into believable facial motion without requiring marker-based mocap. It is provided as an Omniverse Kit extension (the Audio2Face app) that runs on NVIDIA GPUs and integrates into USD-based pipelines. The core value proposition is rapid generation of synchronized facial animation directly from audio, reducing the need for time-consuming manual keying or expensive motion-capture sessions.

Under the hood Audio2Face uses a trained neural model to predict per-frame facial pose from audio input and exposes controls for retargeting, emotion, and intensity. Key features include a Mesh Input pipeline that maps predictions to custom blendshape or bone rigs, USD and FBX export for downstream tools, and live-playback inside Omniverse for iteration. The app provides viseme detection and per-frame mouth/jaw targets, an Emotion/Intensity control to bias expressions, and a Face Graph for layering corrective shapes or animation offsets. Audio2Face can run as a live inference node in Omniverse, streaming animation to connected apps via Live Link connectors for Maya, Blender, or Unreal Engine.

Audio2Face itself is available to download and use through the Omniverse Launcher at no direct license fee for the app; this free access covers non-commercial experimentation and many production use cases. For studios that require enterprise support, centralized deployment, or commercial licensing terms, NVIDIA offers Omniverse Enterprise (contact NVIDIA for custom per-seat pricing). There is no separate per-minute processing fee for Audio2Face, but real-world costs include NVIDIA RTX-class GPU hardware and, for on-premise or enterprise deployments, Omniverse Enterprise subscriptions and professional support which are quoted by NVIDIA sales.

Real-world users include character artists and technical directors who need to produce lip-sync across many lines quickly. For example, a Senior Character Artist using Audio2Face can produce synchronized mouth animation for dozens of NPC lines per day; a Technical Director (TD) can integrate live Audio2Face output into Unreal Engine via Omniverse Live Link to accelerate iteration for cinematic sequences. Studios that need frame-accurate performance capture for complex facial micro-expressions may still pair Audio2Face with high-end mocap systems; in that sense it compares as a lower-cost, faster alternative to FaceWare or FaceFX for many dialogue pipelines.