AI video glossary

Generative video terms, explained in plain English.

Clear definitions for AI video generation, text to video, image to video, talking avatars, lip sync, neural voices, dubbing, and more.

Term index

AI dubbing
Automatically re-voicing a video into a new language, ideally with matched lip-sync and the original speaker's vocal identity.
What is AI dubbing?
AI presenter
A virtual on-camera spokesperson generated by AI — used for explainer videos, product demos, courses, and internal communications.
What is an AI presenter?
AI video generator
Software that creates video from prompts, scripts, images, audio, or existing footage. It may generate one shot or plan and assemble a complete multi-scene video.
What is an AI video generator?

Deepfake
Synthetic media where a person's face or voice is swapped or animated by AI. Consent-based talking avatars are a legitimate use of the same tech.
What is a deepfake?

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.
What is lip sync?

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.
What is a neural voice?

Photo-to-video
Generating a moving video from a single still photograph — most commonly by animating the subject's face to speak.
What is photo-to-video?

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.
What is a talking avatar?
Talking-head video
A video format where one person (or avatar) talks directly to camera — the dominant format for tutorials, sales, courses and social explainers.
What is a talking-head video?
Text-to-speech (TTS)
Technology that converts written text into spoken audio. Modern neural TTS voices sound nearly human and power most talking-avatar tools today.
What is text-to-speech?
Text-to-video
A workflow that turns a written script into a finished video — usually generating a voiceover, animating a face or scene and assembling the result.
What is text-to-video?

Voice cloning
Synthesizing a new voice that sounds like a specific real person, typically from a short audio sample.
What is voice cloning?