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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. 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
  6. Watch “Your LTX 2.3 ComfyUI Workflow Is Probably Wrong… Fix It Like This” →

AI Animation Generator

  1. 1:420:59Seed hunting with a multi-stage LTX 2.3 workflowThe creator demonstrates his custom ComfyUI workflow that generates four low-resolution LTX 2.3 samples simultaneously to find a 'golden seed' before upscaling to 1080p.Fox•Fur•Essence Films
  2. 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
  3. 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
  4. 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
  5. 0:510:36Configure Infinite Talk and Wan 2.1 models in ComfyUIThe user demonstrates loading the Infinite Talk model alongside the Wan 2.1 I2V 14B model within ComfyUI, including enabling block swap and torch compile for VRAM optimization.Olares
  6. 1:551:13Configure sampling and window settings for long video generationThe user walks through the Wan Video Wrapper sampling node, explaining how to set frame window size, motion frame overlap, and start steps for consistent video generation.Olares
  7. 0:310:46Generate cinematic video with LTX MSR workflowThe creator demonstrates using the LTX MSR workflow in ComfyUI to generate a video from multiple reference images and a prompt, highlighting the 3D camera movement and character consistency.Apex Artist
  8. 0:290:24Load source footage and models in ComfyUIThe user demonstrates importing source video footage and loading the necessary model nodes including WAN Video, VAE, and Clip Vision within the ComfyUI interface.ComfyUI
  9. 0:431:12Configure LTX-2.3 MSR LoRA and Prompt Relay in ComfyUIThe creator demonstrates setting up a ComfyUI workflow using the LTX-2.3 model with the MSR LoRA and Prompt Relay nodes to manage video generation on 8GB of VRAM.bigboss97
  10. 4:261:28Overview of the TensNodes Consistent Character Workflow in ComfyUIThe creator walks through a four-stage ComfyUI workflow utilizing TensNodes to process reference images and text for stable LTX video generation.SOTAI
  11. 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.SOTAI
  12. 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.SOTAI
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