InfiniteTalk AI Talking and Singing: Complete Guide
Today, I am excited to share a new model called Infinite Talk. This model takes AI talking and singing generation to a whole new level.
Not long ago, I mentioned that Fantasy Portrait was the best lip-syncing tool available. But now, my opinion has completely changed. Infinite Talk is far superior. It doesn't have the common problems like the sliding window effect or flashing issues after passing 81 frames. Instead, it smoothly runs as long as you want, creating a flawless talking or singing experience.
This guide will cover everything about Infinite Talk, including how to set it up, key features, step-by-step usage, and tips for generating high-quality talking and singing videos.
What is InfiniteTalk AI?
Infinite Talk AI is a model designed for lip-syncing and video generation, capable of both talking and singing.
It works with two main workflows:
- Image-to-Video: Create talking or singing videos from static images.
- Video-to-Video: Modify an existing video by replacing the lip movements and audio with new ones.
One of its strongest points is how cleanly it overwrites existing lip movements, giving you a completely natural look. You wouldn't even know it was the same video after processing.
Key Highlights of InfiniteTalk
Here's why Infinite Talk stands out:
| Feature | Description |
|---|---|
| Talking & Singing | Supports both talking and singing video generation. |
| Unlimited Frame Length | Runs smoothly for as long as needed without flashing or glitches. |
| Image-to-Video Workflow | Generates a realistic talking video from a single image. |
| Video-to-Video Workflow | Replaces lip movements and audio in an existing video. |
| GGUF & FP8 Model Support | Works with different model formats for flexibility. |
| High-Quality Outputs | Delivers superior quality with Fusion X and Coors Vid integration. |
| Works with Adobe Premiere | Combine processed videos with original audio tracks for clean results. |
Setting Up InfiniteTalk in ComfyUI
Step 1: Access Infinite Talk in ComfyUI
When you open ComfyUI, you'll see options for:
- Multi-Talk
- Infinite Talk
For this tutorial, select Infinite Talk. The system will automatically detect your input settings if it's set to Auto.
Step 2: Upload the Model
- Navigate to the Infinite Talk section.
- Upload the Infinite Model you want to use.
You can choose between GGUF and FP8 versions:
- GGUF Version:
- Make sure you also have a GGUF file in your video model loader.
- Note: Some higher versions like Light 2X may not work with GGUF. Lower versions tend to work more reliably.
- FP8 Version:
- Recommended for better quality.
- Use the Fusion X version because it includes Coors Vid for enhanced performance.
Step 3: Manage VRAM Settings
If you have low VRAM, set Block Swap to around 40.
- Lower values may cause the system to fail.
Step 4: Required Additional Files
Make sure you have these essential files installed:
- 1.2.1 VA Safe Tensor
- UMT5 XXL Text Encoder
- Clip Vision H
Tip: You can find the links to these resources online.
Enable Sage Attention to increase processing speed if your computer supports it.
Step 5: Prepare the Image
- Create your base image using any design tool like Whisk.
- Keep the dimensions square for best results.
- Upload the image to ComfyUI.
Step 6: Prepare the Audio
- Generate your desired voice using a service like 11 Labs:
- Choose a voice type. For example, a warrior-type male voice.
- Type your script and generate the voice.
- Download the generated audio.
- Upload the audio into ComfyUI alongside your image.
Step 7: Match Video Length with Audio
- Check your audio length. Example: If it's 16 seconds, set the video length to match:
- Video length = 16 seconds
- Frames = 16 × 25 = 400 (since we want 25 frames per second)
Update both:
- Number of Frames:
400 - Frame Rate:
25
Step 8: Add a Prompt
Keep your prompt simple. Example:
Beautiful woman
Simple prompts lead to cleaner results.
Creating Singing Videos with InfiniteTalk
Step 1: Generate a Song
- Use UDO:
- Choose Create.
- Select Female Singer and Folk Song.
- Leave it on Auto-Generate or add your custom lyrics.
- Generate and download the song as MP3.
Step 2: Isolate Vocals
- Use a Vocal Remover tool to split the song into:
- Vocal Track
- Instrumental Track
- Save only the vocal track for use in ComfyUI.
This method is better than trying to separate vocals inside ComfyUI, as external tools are more reliable.
Step 3: Upload to ComfyUI
- Upload your image and vocal track to Infinite Talk.
Step 4: Combine Tracks in Video Editing Software
After processing the video:
- Import the video into Adobe Premiere or similar software.
- Place the original song as a separate audio track.
- Mute the processed video's audio.
- Final output = clean music video with perfect lip-syncing.
Recommended Models for InfiniteTalk
Here are the exact models needed for different formats:
| Model Type | File Size | Description |
|---|---|---|
| FP16 | 5 GB | High-quality but large file size |
| Light X2Vs | Smaller | Required for some workflows |
| Fusion X (FP8) | Optimal | Includes Coors Vid for best results |
All three repositories are created by Kai Jai, though they are spread across different locations.
Example Use Case: Cartoon Singing Video
I experimented with a cartoon singing video using this exact workflow:
- Created a cartoon image in Whisk.
- Generated a song in UDO.
- Separated vocals.
- Uploaded the cartoon and vocal track into Infinite Talk.
The result was surprisingly accurate:
- Even background characters appeared to dance naturally.
- My prompt was: Dancing cartoon line with stereo.
Video-to-Video Workflow
The video-to-video workflow is ideal for:
- Changing dialogue in an existing video.
- Modifying a speaker's voice.
- Fixing lip-sync issues.
Steps:
- Upload Original Video
- Import the existing video into ComfyUI.
- Prepare New Audio
- Example script:
"Brothers, the time has come to rise beyond these walls."
- Example script:
- Process the Video
- Infinite Talk completely rewrites the lip movements and syncs them to the new audio.
- Final Output
- Resulting video looks natural and clean.
- Perfect for re-editing old movies or correcting audio issues in professional content.
Websites & Resources
- Running Hub:
- Contains various workflows for Infinite Talk, including camera movement and other enhancements.
- Great resource for exploring creative ideas.
Tips for Best Results
- Use FP8 Fusion X models for top-quality outputs.
- Keep prompts short and simple.
- Use external tools for audio preparation instead of relying solely on ComfyUI.
- Match video length accurately with audio duration.
- If VRAM is limited, adjust Block Swap settings.
Frequently Asked Questions (FAQs)
1. What is Infinite Talk used for?
Infinite Talk is used for generating talking and singing videos from images or modifying existing videos with new lip-sync and audio.
2. Which models work best with Infinite Talk?
- FP8 Fusion X is recommended for quality.
- GGUF works but may have compatibility issues with higher versions.
3. Can I create music videos with Infinite Talk?
Yes. Simply separate the vocals from music and sync them using ComfyUI, then merge everything in video editing software like Adobe Premiere.
4. How do I fix VRAM errors?
Increase Block Swap to 40 or higher if your GPU has limited VRAM.
5. Can I replace dialogue in old videos?
Yes. The video-to-video workflow allows you to rewrite lip movements and audio, making it perfect for re-editing old footage.
Final Thoughts
Infinite Talk is a powerful tool for generating AI-driven talking and singing videos. From static images to existing videos, it provides a flexible and clean workflow for content creators, musicians, and editors.
By following the steps above—selecting the right models, preparing your audio carefully, and using video editing tools—you can create professional-quality results quickly and effectively.