Audio-Driven Avatars Animate the Whole Body From Speech, Not Just the Lips

A developer compares two ways of building talking-head videos for demos and tutorials: the conventional text-to-speech plus lip-sync pipeline, and audio-driven animation. The traditional approach mainly moves the mouth while the rest of the face and body stay static or loop, which can look unnatural. The article highlights ByteDance's OmniHuman 2.0 as an example, where one reference image and an audio track generate lip sync, facial expressions, gestures, and body movement together at 720p. The author notes that this trades fine-grained frame-level control for coherence, shifting the work toward preparing good input images, audio, and prompts. The piece is written by someone who runs an independent web app for OmniHuman 2.0, a disclosure the author provides.