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ComfyUI: Configure LTX 2.3 foundational parameters

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Demo summary

A walkthrough of setting dimensions, frame counts, and loading core models including the LTX 2.3 distill model and audio VAE within a ComfyUI workflow.

Step-by-step

  1. Set the width, height, frame count, and FPS in the foundational parameters zone
  2. Toggle the text-to-video mode to false to maintain character consistency from an uploaded image
  3. Upload the first frame image to be automatically resized and compressed
  4. Input the prompt describing the character's action
  5. Combine the base model with the LTX 2.3 distill LoRA
  6. Load the video VAE and the audio VAE model
  7. Map the upscale model and text encoder to their respective variables

Options

  • Toggle text-to-video mode to true to ignore uploaded images and rely solely on prompts
  • Adjust the LoRA weight to control video smoothness

Watch out for

  • LTX 2.3 has strict constraints on output dimension ratios that must be followed
  • Text-to-video mode must be false if you need to lock in character face consistency from an image

Tips

  • Combine the base model directly with the LoRA distill instead of using the stock model to allow for weight tweaking
  • Use the audio VAE model to ensure flawless AV sync

Highlights

“clearing the runway for the next step”

All demos from “Your LTX 2.3 ComfyUI Workflow Is Probably Wrong… Fix It Like This”

  1. 2:590:13Search and load LTX 2.3 templates in ComfyUIThe creator demonstrates how to use the template search feature in ComfyUI to find and load the LTX 2.3 image-to-video workflow.ComfyUIImage to Video
  2. 3:411:25Configure LTX 2.3 foundational parametersCurrentA walkthrough of setting dimensions, frame counts, and loading core models including the LTX 2.3 distill model and audio VAE within a ComfyUI workflow.ComfyUIAI Animation Generator
  3. 5:060:37Process visual and audio inputs in ComfyUIThe demo shows how to use the LTX V image-to-video condition node and empty latent audio node to prepare data for the generation engine.ComfyUIAI Animation Generator
  4. 5:431:03Generate synced AV with LTX V concat nodeThe creator demonstrates using the LTX V concat AV latent node to bind video and audio together before sampling to ensure perfect synchronization.ComfyUIAI Video Generator
  5. 10:250:53Optimize step count and sigma coefficientsThe creator demonstrates adjusting the configuration to 12 steps and tuning sigma coefficients in ComfyUI to improve character consistency.ComfyUIAI Image Generator
  6. 12:200:26Integrate independent video upscale workflowThe demo shows how to replace the standard LTX resampling block with a dedicated video upscale workflow for cleaner high-resolution results.ComfyUIAI Video Upscaler
  7. Watch “Your LTX 2.3 ComfyUI Workflow Is Probably Wrong… Fix It Like This” →

AI Animation Generator

  1. 2:070:23Load Wan 2.2 Animate workflow and install nodesThe user demonstrates how to drag and drop the Wan 2.2 Animate workflow into ComfyUI and use the Manager to install missing custom nodes.MDMZ
  2. 2:551:05Configure video input and output settingsThe demo shows how to upload a source video to ComfyUI, set the frame count, and adjust the output dimensions to match the original aspect ratio.MDMZ
  3. 16:361:56Setting up HunyuanVideo 1.5 in ComfyUIThe video demonstrates how to update ComfyUI and import the HunyuanVideo 1.5 JSON workflow files to create a node-based generation environment.AI Search
  4. 20:151:53Text-to-Video generation in ComfyUIA step-by-step demo of configuring the Hunyuan nodes in ComfyUI, entering a prompt for a 'giant cat', and rendering the final 720p video.AI Search
  5. 29:151:33Running HunyuanVideo with GGUF (Low VRAM)The video shows how to use the GGUF loader node to run a compressed version of HunyuanVideo 1.5, enabling video generation on GPUs with as little as 6GB of VRAM.AI Search
  6. 0:594:52Configure LTX 2.3 in ComfyUIThe creator walks through the ComfyUI node setup for LTX 2.3, explaining the GGUF model loader, VAE settings, and how to adjust resolution and frame counts for optimal rendering.AIKnowledge2Go
  7. 1:230:41Setting up LTX-2.3 in ComfyUIThe creator demonstrates how to browse templates in ComfyUI, search for LTX 2.3, and download the required missing models for the text-to-video workflow.MDMZ
  8. 13:071:21Applying LoRA to Wan 2.2 video generationThe video shows how to integrate a LoRA (Low-Rank Adaptation) into a Wan 2.2 workflow to achieve specific cinematic movements like a face zoom.pixaroma
  9. 31:133:44Text-to-video with LTX-2The video walks through setting up the LTX-2 model in ComfyUI to generate high-resolution video clips from text prompts and images.pixaroma
  10. 39:075:27Cloud-based ComfyUI on RunPod/RunHubThe video shows how to run complex video workflows in the cloud using RunHub AI, demonstrating the interface and execution of InfiniteTalk and Wan 2.2 without local hardware.pixaroma
  11. 2:351:46Configure Infinite Talk models in ComfyUIThe creator demonstrates how to organize the necessary models within the ComfyUI workflow, including the Lightning LoRA, quantized Infinite Talk UNET models, and the Wan 2.1 VAE and Clip Vision nodes.Aiconomist
  12. 11:060:26Combining audio, images, and promptsA demonstration of layering a specific action prompt (patting stomach) over a specific audio timestamp to create a fully directed AI scene.What Dreams Cost
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