Avatar IV
Create lifelike videos from a single photo and voice input with HeyGen's AI.
What is Avatar IV? Complete Overview
Avatar IV is a revolutionary AI tool from HeyGen, designed to transform digital storytelling by enabling quick, lifelike video creation from minimal input. Utilizing just one photo and voice input, Avatar IV generates highly realistic videos with natural facial movements, hand gestures, and synchronized audio. This tool is perfect for creating short, engaging messages such as personal introductions or timely updates. Powered by a diffusion-inspired audio-to-expression engine, Avatar IV analyzes vocal cues to produce photorealistic animations. It supports various formats, including portrait, half-body, and full-body options, making it versatile for different use cases. Avatar IV is ideal for businesses, content creators, and individuals looking to enhance their video content with minimal effort.
Avatar IV Interface & Screenshots

Avatar IV Official screenshot of the tool interface
What Can Avatar IV Do? Key Features
Photo to Video
Transform a single photo into an animated video with natural voice synchronization. The AI engine ensures that the facial movements and gestures match the audio input, creating a seamless and realistic video.
Realistic Animation
Avatar IV includes lifelike facial movements, head tilts, pauses, and micro-expressions, along with natural hand gestures, providing an immersive and realistic viewing experience.
Format Flexibility
Supports multiple video formats including portrait, half-body, and full-body options, allowing users to choose the best fit for their content needs.
AI-Powered Engine
Leverages a diffusion-inspired audio-to-expression engine that analyzes vocal tone, rhythm, and emotion to produce nuanced animations that reflect the speaker's intent.
Fast & Easy
Designed for speed and simplicity, Avatar IV generates videos in seconds, making it ideal for quick content creation without the need for complex setups or editing.
Best Avatar IV Use Cases & Applications
Personal Introductions
Create engaging and personalized introduction videos for social media profiles, websites, or professional networks using just a single photo and voice input.
Timely Updates
Quickly produce updates or announcements for your audience with lifelike videos that convey your message naturally and effectively.
Educational Content
Enhance e-learning materials with animated avatars that deliver lessons or explanations in a more engaging and interactive manner.
Marketing Campaigns
Use Avatar IV to create realistic promotional videos featuring brand ambassadors or spokespersons without the need for expensive video shoots.
How to Use Avatar IV: Step-by-Step Guide
Upload a clear photo of the subject you want to animate. Ensure the photo is high quality for the best results.
Write a script or upload an audio file that will be used to generate the voice for the video. The script should be clear and concise.
Select a preferred voice from the available options. HeyGen offers a variety of voices to match different tones and styles.
Generate your video! The AI will process the inputs and create a lifelike video, typically ready in seconds.
Avatar IV Pros and Cons: Honest Review
Pros
Considerations
Is Avatar IV Worth It? FAQ & Reviews
No, videos created with Avatar IV cannot be edited in HeyGen Studio. They are generated as-is from the inputs provided.
The Free plan allows a maximum video length of 10 seconds and a limit of 3 videos per month.
Yes, Avatar IV supports multiple languages and accents, depending on the voice options available in HeyGen.
Yes, but usage is subject to the terms of your HeyGen subscription plan. Commercial use may require a paid plan.
Videos are typically ready in seconds, making it a fast and efficient tool for quick content creation.