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Create lifelike avatars with HeyGen Avatar 4

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Demo summary

Demonstration of HeyGen's Avatar 4 model, showing how to use text prompts to control character gestures like pointing while lip-syncing.

Step-by-step

  1. Upload an image of your character
  2. Upload an audio file for the dialogue
  3. Enter a text prompt to control character gestures (e.g., 'the man points his finger')
  4. Select your preferred resolution
  5. Generate the video

Options

  • Choose between 720p or 1080p resolution

Tips

  • Add descriptive details to your gesture prompts, like 'in a threatening way', to make the avatar more expressive

Highlights

“it actually does a decent job of following your prompts compared to the other tools”

All demos from “Best AI Lip-Sync Tools in 2025 (Most Realistic)”

  1. 0:501:38Lip-sync an image with Dreamina OmnihumanThe creator demonstrates how to upload a character image and an ElevenLabs audio file to Dreamina's AI Avatar tool to generate a lip-synced video.DreaminaAI Lip Sync Generator
  2. 4:502:03Animate character dialogue in DzineA walkthrough of using Dzine's lip-sync feature, including manual face selection, audio uploading, and trimming the timeline for precise synchronization.DZine AIAI Lip Sync Generator
  3. 7:331:13Add lip-sync to an existing video in DzineThe user demonstrates uploading a pre-existing video of a character and overlaying audio to sync the mouth movements to the video's motion.DZine AIAI Lip Sync Generator
  4. 10:561:21Generate cinematic lip-sync with Hedra AIThe video shows the process of uploading an image and audio script to Hedra's video generation platform using the Hedra Character 3 model.HHedraAI Lip Sync Generator
  5. 13:241:26Create lifelike avatars with HeyGen Avatar 4CurrentDemonstration of HeyGen's Avatar 4 model, showing how to use text prompts to control character gestures like pointing while lip-syncing.HeyGenAI Avatar Video Generator
  6. 16:482:48Advanced character motion with HiggsfieldThe creator uses Higgsfield's 'Speak' feature to select specific character motions (static, walking, or angry) and sync them with audio.HiggsfieldAI Lip Sync Generator
  7. 21:551:50Video-to-video lip-sync with Kling AIA demonstration of Kling AI's lip-sync tool where audio is added to a pre-generated video of a character leaning back in a chair.Kling AIAI Lip Sync Generator
  8. 26:100:58Natural lip-syncing on video with PixverseThe user shows how to upload a video and dialogue file to Pixverse's speech feature to achieve natural-looking mouth movements on existing footage.PPixverse AIAI Lip Sync Generator
  9. Watch “Best AI Lip-Sync Tools in 2025 (Most Realistic)” →

AI Avatar Video Generator

  1. 8:011:14Sync audio to image using HeyGen Photo to VideoThe user demonstrates uploading a Midjourney image and an ElevenLabs audio file to HeyGen's Avatar 4 tool, including using a text prompt for directorial control over the character's expression.Curious Refuge
  2. 4:270:37Swap AI avatars and background musicA demonstration of changing the presenter avatar and background audio track within an existing HeyGen project to alter the video's tone.Joseph Martin
  3. 4:201:24Editing scripts and captions in HeyGen AI StudioThe creator walks through the HeyGen AI Studio editor, showing how to manually edit the generated script, adjust delivery style, and customize caption fonts and colors.Simon Crowe
  4. 6:260:49Adjusting avatar movement with HeyGen Motion EngineThe user demonstrates the Motion Engine settings in HeyGen, selecting different movement styles like 'excited' or 'welcoming' to change the avatar's physical energy.Simon Crowe
  5. 8:332:35Cloning a real person as an AI avatarThe tutorial demonstrates the step-by-step process of creating a 'digital twin' by recording a webcam video and reading a safety script to train a custom HeyGen avatar.Simon Crowe
  6. 15:231:50Creating a virtual character in HeyGenThe video shows how to design a stylized virtual character (Matteo) using AI prompts, selecting a Pixar-style aesthetic and assigning a specific voice from the library.Simon Crowe
  7. 13:241:26Create lifelike avatars with HeyGen Avatar 4CurrentDemonstration of HeyGen's Avatar 4 model, showing how to use text prompts to control character gestures like pointing while lip-syncing.Tao Prompts
  8. 1:111:10Generate a nature documentary with HeyGen and Seedance 2.0The creator uses the HeyGen AI agent to generate a nature documentary about puffins, demonstrating how the tool places his personal AI avatar into scenic cliffside shots.Joseph Martin
  9. 2:561:01Create a cinematic film set walkthroughA demonstration of HeyGen's AI agent and Seedance 2.0 generating a video of the creator walking through a Hollywood movie set while explaining production roles.Joseph Martin
  10. 1:181:04Create an AI Avatar with HeyGenThe creator demonstrates how to upload personal video footage to HeyGen to create a realistic digital clone or AI avatar.Ayushman Pandita
  11. 6:250:38Reviewing the AI-generated video outputThe final output generated by HeyGen is played, showing the AI avatar speaking the script with automated B-roll and captions.Ayushman Pandita
  12. 2:460:09Integrate Eleven Labs voices into HeyGenThe video shows the interface for selecting Eleven Labs voice profiles directly within the HeyGen video editor.Chris with Minn Media
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