Video from a script
HeyGen generates video of a person or character speaking, from a written script. Choose an AI avatar, set the script, the voice, and the orientation, and it produces video with matching mouth movement and expression.
It can also build a digital twin from short footage and audio of you, reproducing your appearance, delivery, and gestures. You can then produce video of a different script without standing in front of a camera again.
Where it fits
- Explainer video for products and services
- Internal training, manuals, and teaching material
- Short vertical video for social platforms
- Localized versions of the same guidance in several languages
- Presenter video that speaks on your behalf
Not needing a location, lighting, a camera, and a presenter each time makes it well suited to producing the same format of video on an ongoing basis. It can also build video from an existing slide deck or PDF.
How it differs from video generation models
Models such as Sora and Veo focus on generating scenery, motion, and camera work from text or an image. HeyGen focuses on video of a person delivering a script, handling mouth movement, voice, and captions together.
Video generation models for cinematic scenes; HeyGen for making presenter-led explanation efficient. HeyGen also generates backgrounds and assets, so the boundary is narrowing.
Consent and cautions
Using a real person’s face or voice requires their explicit consent. Because it can show someone saying things they never said, it carries clear risks of deepfakes, impersonation, and misinformation.
Indicate the use of an AI avatar where appropriate when publishing, and be especially careful in news, endorsements, and contractual contexts where being misunderstood matters. Generation time and export quality depend on your plan and credits.