Glossary
Plain-English answers to every talking-avatar question.
Quick definitions for the terms that show up when you start making AI videos — lip-sync, neural voices, photo-to-video, and more.
Talking avatar
A digital character — usually built from a single photo — whose lips, jaw, and expressions are animated by AI to match a chosen voice or script.
Read more →Lip sync
The frame-by-frame alignment of a face's mouth movements to a target audio track so that the speaker visibly forms the right sounds.
Read more →Text-to-video
A workflow that turns a written script into a finished video — usually by generating a voiceover, animating a face or scene, and assembling the result automatically.
Read more →Photo-to-video
Generating a moving video from a single still photograph — most commonly by animating the subject's face to speak.
Read more →AI presenter
A virtual on-camera spokesperson generated by AI — used for explainer videos, product demos, courses, and internal communications.
Read more →Voice cloning
Synthesizing a new voice that sounds like a specific real person, typically from a short audio sample.
Read more →Neural voice
A text-to-speech voice generated by a deep neural network, producing more natural intonation and emotion than older concatenative or formant TTS.
Read more →AI dubbing
Automatically re-voicing a video into a new language, ideally with matched lip-sync and the original speaker's vocal identity.
Read more →Deepfake
Synthetic media where a person's face or voice is swapped or animated by AI. Talking avatars built from your own photo with consent are a legitimate, ethical use of the same underlying tech.
Read more →Text-to-speech (TTS)
Technology that converts written text into spoken audio. Modern neural TTS produces voices indistinguishable from human recordings and is the audio engine behind most talking avatars.
Read more →AI video generator
A tool that produces finished video files from inputs such as text prompts, scripts, photos, or audio — without filming. Talking-avatar generators are one of the most practical sub-categories.
Read more →Talking-head video
A video format where a single person (or avatar) talks directly to camera — the dominant format for tutorials, sales outreach, course modules, and social explainers.
Read more →