ComfyUI: Sampling and Scheduler Configuration

Demo summary
The creator shows the sampling process in ComfyUI, specifically demonstrating how to select the correct scheduler and set sampling steps to avoid face distortion.
Step-by-step
- Navigate to the sampling process section
- Select a scheduler from the drop-down list
- Set the sampling steps to nine
- Clone the extension repository into your custom nodes folder if the scheduler is missing
- Install the required Python dependencies
- Restart ComfyUI to refresh the scheduler list
Options
- Use the official custom Sigma method
Watch out for
- Using the official custom Sigma method often results in distorted, blurry, or deformed faces
- The specific scheduler required may not be in the default drop-down list without an extension
Tips
- Avoid the custom Sigma method for better results in face swapping
- Set sampling steps to nine based on extensive testing for optimal output
Highlights
“The installation is very simple”
All demos from “How to Face Swap in LTX 2.3 (Full ComfyUI Guide)|I Put LTX 2.3 Face Swap Through 5 Extreme Tests”
2:081:55Configuring LTX 2.3 Face Swap Workflow in ComfyUIThe creator walks through a custom ComfyUI workflow, showing how to load the LTX 2.3 model with the face swap LoRA and set up resolution scaling and frame count calculations.ComfyUI· AI Face Swap Generator
4:031:00Generating Guide Videos with BFS NodeThe demo shows how to use the BFS Node extension to combine a reference face image and a driving video into a green-screen guide video required for the LTX sampling process.ComfyUI· Video to Video
5:030:47Injecting Latent Constraints with Add Guide MultiThe video demonstrates using the 'Add Guide Multi' node from the KJ Node extension to inject the guide video constraints and VAE-encoded latents into the sampling pipeline.ComfyUI· Video to Video
5:500:56Sampling and Scheduler ConfigurationCurrentThe creator shows the sampling process in ComfyUI, specifically demonstrating how to select the correct scheduler and set sampling steps to avoid face distortion.ComfyUI· AI Image Generator
8:090:41Close-up Face Swap TestA demonstration of a close-up face swap where the LTX 2.3 model transfers facial expressions and lip movements from a driving video to a target portrait.ComfyUI· AI Face Swap Generator
9:521:03Testing Face Swap with Scene CutsThe video demonstrates how the LTX 2.3 face swap LoRA handles a reference video with a camera cut and clothing change, showing its ability to maintain character features across transitions.ComfyUI· AI Face Swap Generator
10:550:39Underwater Environmental Interference TestA demonstration of the face swap effect in an extreme underwater environment, showing the model's ability to reveal and swap a face through water surface interference.ComfyUI· AI Face Swap Generator- Watch “How to Face Swap in LTX 2.3 (Full ComfyUI Guide)|I Put LTX 2.3 Face Swap Through 5 Extreme Tests” →
AI Image Generator
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25:330:32Importing workflows from image metadataShows how to drag an existing AI-generated image into the ComfyUI canvas to automatically reconstruct the entire node workflow used to create it.AI Search
58:094:05Controlling character poses with ControlNetDemonstrates using the OpenPose pre-processor and ControlNet Union model to force a generated princess character into a specific pose from a reference image.AI Search
1:360:57Install custom workflows and missing nodes in ComfyUIThe video demonstrates how to drag and drop a JSON workflow file into ComfyUI and use the Manager to identify and install missing custom nodes.Sebastian Kamph
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4:590:55Navigating the ComfyUI workspace and UI settingsShows how to use zoom, fit view, pan modes, and toggle link visibility or themes (light/dark mode) within the ComfyUI interface.Sebastian Kamph
11:311:49Adding and connecting nodes in ComfyUIThe video demonstrates adding a 'Load Image' node via the library or right-click menu and connecting it to other nodes like 'Save Image' using spaghetti links.Sebastian Kamph
19:431:34Converting widgets to inputs in ComfyUIShows how to convert a node's internal settings (like seed) into an external input pin and connect a 'Primitive' node to control it.Sebastian Kamph
25:032:06Managing seeds and randomizationShows the difference between 'Randomize' and 'Fixed' seed settings in the KSampler to either generate new variations or reproduce the same image.Sebastian Kamph
36:450:34Saving images to specific foldersShows how to use the 'Save Image' node and file path syntax to organize output images into custom subfolders.Sebastian Kamph
ComfyUI