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Let's GoHeyGen Avatar 4
- Avatar IV
byHeyGen
Transform static portraits into expressive talking presenters with realistic head dynamics, clean lip synchronization, and studio-grade voiceover
How HeyGen works
Turn any front-facing studio headshot into a fully synchronized talking presenter in three straightforward configuration steps.
Upload a Studio Portrait
Select a front-facing headshot with direct gaze, balanced lighting, and a neutral resting expression.
Supply Audio or Script
Provide a close-miked voice recording or type a text script paired with a professional narrator voice.
Configure Motion and Render
Choose between stable or expressive talking styles, set aspect ratios up to 1080p resolution, and burn captions.
What HeyGen is good at
Diffusion-based facial dynamics, dual motion styles, and flexible audio-driven synchronization engineered for high-definition video output.
Diffusion-Driven Facial Dynamics
Generates organic neck torsion, subtle brow movement, and natural breathing micro-expressions directly from a reference headshot rather than flat mouth-warping.
Dual Talking Styles
Select stable mode for measured compliance lectures and corporate briefings, or switch to expressive mode for energetic social hooks and shoulder-level gesture.
Audio-Driven Synchronization
Sync mouth geometry and pacing to uploaded studio speech files, inheriting every emotional inflection and natural pause from custom voice tracks.
Multi-Ratio 1080p Delivery
Output up to 1080p resolution across 16:9 widescreen, 9:16 vertical, and 1:1 square aspect ratios with optional burned-in captions for universal accessibility.
Made with HeyGen
Explore realistic talking presenters animated across corporate briefings, creative editorials, and social campaigns.
Cinematic commentary portrait with nuanced facial micro-expressions
High-definition product explainer presenter in clean studio lighting
Editorial presenter headshot with organic breathing motion
Design case study walk-through with expressive head-and-neck cadence
Musician audio liner notes delivered with tight lip synchronization
What people build with HeyGen
From globalized ad campaigns to scalable enterprise training, discover how creators build automated presenter pipelines.
Frequently Asked Questions
Yes, Avatar IV is the Roman-numeral designation for HeyGen Avatar 4. Both names refer to the same diffusion-based single-photo avatar generation framework that transforms static portraits into realistic talking presenter videos.
Use a high-resolution, front-facing portrait with balanced studio lighting, open eyes, and a closed mouth in a neutral resting expression. Avoid 3/4-angle shots, side profiles, sunglasses, heavy forehead fringes, or wide open-mouth grins, as pre-existing visible teeth or angled facial geometry can warp during speech synthesis.
You can provide speech either by uploading a clean, close-miked studio audio recording in WAV or MP3 format, or by entering a text prompt and selecting from over a hundred built-in voices such as Warm Pro Narrator. When an audio file is uploaded, it automatically sets the video duration and preserves the vocal emotion and pacing of the track.
Stable mode delivers a calm, formal presentation with minimal sway, making it ideal for technical documentation, compliance training, and corporate briefings. Expressive mode introduces larger head tilts, natural shoulder gestures, and animated micro-expressions, suited for short-form social media ads and marketing campaigns.
Avoid using this model for scenes requiring dramatic emotional acting, hand-to-face contact, physical walking or pointing, multi-character dialogue, or heavily stylized anime illustrations. It is specifically optimized for single-subject talking-head presenter videos.
Try HeyGen on Fuser
Transform static portraits into expressive talking presenters with realistic head dynamics, clean lip synchronization, and studio-grade voiceover