ComfyUI: Multi-character lip-sync workflow in InfiniteTalk
ComfyUI
Demo summary
The tutorial demonstrates the multi-audio workflow, showing how to assign different audio files to specific characters (parallel vs. add types) for a multi-person scene.
Step-by-step
- Switch the model type to 'multi' before proceeding
- Input the first audio file for the character on the left
- Input the second audio file for the character on the right
- Select the multi-audio type (Parallel or Add)
- Mute the respective character's audio when the other is speaking if using Parallel mode
Options
- Use 'Parallel' type for audio files of the same length where characters alternate speaking
- Use 'Add' type to sequence audio files one after another to increase total video duration
Watch out for
- Requires at least 12 GB of VRAM to run the multi-workflow smoothly
Tips
- If errors occur, refer to the logic explained in the 2.1 tutorial as this builds on the same foundation
- Use Parallel type to keep the final video length equal to the individual audio length rather than doubling it
Highlights
“Infinite Talk builds on the same logic, just slightly heavier.”
All demos from “InfiniteTalk + WAN 2.1 Full Setup Tutorial (Single, Video & Multi workflow) in ComfyUI | 8GB VRAM”
- 4:580:42Image preparation and resizing for InfiniteTalkThe video shows how to select a forward-facing image and resize/crop it to 832x480 resolution to ensure compatibility with 8GB VRAM constraints.ComfyUI· AI Crop Image
- 7:490:49Configure WAN Video Sampler for image and video inputsThe creator walks through setting the 'start_frame' and 'light X2V LoRA' steps in the WAN video sampler to match the motion of the input source.ComfyUI· AI Animation Generator
- 8:381:53Multi-character lip-sync workflow in InfiniteTalkCurrentThe tutorial demonstrates the multi-audio workflow, showing how to assign different audio files to specific characters (parallel vs. add types) for a multi-person scene.ComfyUI· AI Lip Sync Generator
- Watch “InfiniteTalk + WAN 2.1 Full Setup Tutorial (Single, Video & Multi workflow) in ComfyUI | 8GB VRAM” →
AI Lip Sync Generator
10:070:59Lip-syncing with custom audioThe creator demonstrates importing an audio file into the timeline and using a specific prompt structure to synchronize the character's mouth movements with the audio track.What Dreams Cost
6:310:34Animate talking avatar with LTX 2.3The creator uploads the generated image and audio into the ComfyUI LTX 2.3 workflow and runs the generation to produce a lip-synced video.Prince does AI
14:523:11Lip-syncing audio to images with LTX 2.3The tutorial shows how to upload an MP3 file and a character image to generate a lip-synced video, including a demonstration of the voice isolation subgraph in ComfyUI.AIKnowledge2Go
36:000:39Singing characters with LTX-2 and custom audioThe creator demonstrates how to use LTX-2 to make a character sing by providing a custom audio file and a specific singing prompt.pixaroma- 8:381:53Multi-character lip-sync workflow in InfiniteTalkCurrentThe tutorial demonstrates the multi-audio workflow, showing how to assign different audio files to specific characters (parallel vs. add types) for a multi-person scene.Atelier Darren
4:460:35Installing and using the Sync custom node in ComfyUISebastian walks through installing the Sync custom node via Git URL in ComfyUI and setting up a workflow with video/audio input nodes and the Sync generate node.Sebastian Kamph- 5:291:09Combining image-to-video models with Sync in ComfyUIThe video demonstrates a complex workflow using Krea.ai to transform a shot into a cinematic style before passing the generated video into Sync for final lip-syncing.Sebastian Kamph
5:411:07Configure frame window and motion settings for Infinite TalkThe user demonstrates how to adjust the frame window size and motion frame overlap to balance video smoothness, lip-sync consistency, and VRAM usage.pixaroma- 8:411:11Create a multi-person talking video in ComfyUIThe creator demonstrates the multi-talk version of the workflow, showing how to assign separate audio files to two different characters in a single image using the multimodel setting.pixaroma
3:270:37Two-person image to video conversation in ComfyUIThe creator demonstrates how to use the 'add' setting in the ComfyUI node widget to load separate audio files for a back-and-forth conversation between two characters.ComfyUI Studio- 4:041:22Parallel audio lip-sync for two charactersThe video shows how to use the 'PAR' setting in the WAN workflow to merge audio tracks for simultaneous or perfectly timed character interactions, including masking two faces in the node.ComfyUI Studio
4:341:29Video-to-video lip sync with Infinite TalkThe creator shows how to use a vid-to-vid workflow to analyze an audio file and automatically synchronize a character's mouth and expressions in an existing video clip.Yaroflasher