What is HeyGen?
HeyGen explained
HeyGen lets you create AI-generated talking-head videos using a digital avatar that looks and sounds like a real person. You type a script, choose an avatar, and receive a polished video in minutes — no camera, microphone, or video editing skills required. HeyGen also offers video translation: upload any video and it re-lips the speaker in another language with synchronised mouth movement.
Korean context
HeyGen in Korea
Korean EdTech companies use HeyGen to produce course videos in multiple languages without re-filming instructors. The video translation feature is particularly popular among Korean YouTubers who want to reach English-speaking audiences — the AI re-dubs the Korean presenter in English with convincing lip sync. Corporate training departments use it to localise global onboarding content into Korean cheaply.