ComfyUI-LTXVideo Official Nodes

Editor's Note: The official ComfyUI node pack from Lightricks for LTX 2.3. Covers installation methods, core nodes, workflow examples, and troubleshooting common issues.

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A collection of powerful custom nodes that extend ComfyUI's capabilities for the LTX-2 video generation model.

LTX-2 is built into ComfyUI core (see it here), making it readily accessible to all ComfyUI users. This repository hosts additional nodes and workflows to help you get the most out of LTX-2's advanced features.

To learn more about LTX-2 See the main LTX-2 repository for model details and additional resources.

Prerequisites

Before you begin using an LTX-2 workflow in ComfyUI, make sure you have:

• ComfyUI installed (Download here](https://www.comfy.org/download)

• CUDA-compatible GPU with 32GB+ VRAM

• 100GB+ free disk space for models and cache

We recommend using the LTX-2 workflows available in Comfy Manager.

• Open ComfyUI

• Click the Manager button (or press Ctrl+M)

• Select Install Custom Nodes

• Search for “LTXVideo”

• Click Install

• Wait for installation to complete

• Restart ComfyUI

The nodes will appear in your node menu under the “LTXVideo” category. Required models will be downloaded on first use.

Example Workflows

The ComfyUI-LTXVideo installation includes several example workflows. You can see them all at:

LTX-2.3 Workflows:

• Text/image to video full/distilled model; single stage

• Text/image to video distilled model; two stages (with upsampling)

• IC-LoRA distilled model depth + human pose + edges

• IC-LoRA distilled model I2V motion tracking

Older Workflows (LTX-2.0):

• Text to video full model

• Text to video distilled model (Fast)

• Image to video full model

• Image to video distilled model (Fast)

• Video to video detailer

• IC-LoRA distilled model (depth + human pose + edges)

• IC-LoRA distilled model with downscaled reference latents

Union IC-LoRA Model

We introduce a new Union IC-LoRA model that combines depth and edge (canny) control conditions into a single unified LoRA.

Key Features

• Unified Control: A single LoRA that supports multiple control conditions (depth or edges).

• Downsampled Latent Processing: The union LoRA operates on a downsampled latent size, which reduces memory usage and significantly speeds up inference while maintaining quality.

How It Works

The union LoRA is trained to understand and respond to both control signals (depth maps and edge maps) within a single model. The model learns to:

• Parse multiple conditions: Identify which control signals are present in the input

• Process at reduced resolution: Work on downsampled latents to improve efficiency

Required Models

Download the following models:

LTX-2.3 Model Checkpoint - Choose and download one of the models to COMFYUI_ROOT_FOLDER/models/checkpoints folder.

• ltx-2.3-22b-dev.safetensors

• ltx-2.3-22b-distilled-1.1.safetensors

Spatial Upscaler - Required for current two-stage pipeline implementations in this repository. Download to COMFYUI_ROOT_FOLDER/models/latent_upscale_models folder.

• ltx-2.3-spatial-upscaler-x2-1.1.safetensors

• ltx-2.3-spatial-upscaler-x1.5-1.0.safetensors

Temporal Upscaler - Required for current two-stage pipeline implementations in this repository. Download to COMFYUI_ROOT_FOLDER/models/latent_upscale_models folder.

• ltx-2.3-temporal-upscaler-x2-1.0.safetensors

Distilled LoRA - Required for current two-stage pipeline implementations in this repository (except DistilledPipeline and ICLoraPipeline). Download to COMFYUI_ROOT_FOLDER/models/loras folder.

• ltx-2.3-22b-distilled-lora-384-1.1.safetensors

Gemma Text Encoder Download all files from the repository to COMFYUI_ROOT_FOLDER/models/text_encoders/gemma-3-12b-it-qat-q4_0-unquantized.

• Gemma 3

LoRAs Choose and download to COMFYUI_ROOT_FOLDER/models/loras folder.

• ltx-2.3-22b-ic-lora-union-control-ref0.5.safetensors

• ltx-2.3-22b-ic-lora-motion-track-control-ref0.5.safetensors

• ltx-2-19b-ic-lora-detailer.safetensors

• ltx-2-19b-ic-lora-pose-control.safetensors

• ltx-2-19b-lora-camera-control-dolly-in.safetensors

• ltx-2-19b-lora-camera-control-dolly-left.safetensors

• ltx-2-19b-lora-camera-control-dolly-out.safetensors

• ltx-2-19b-lora-camera-control-dolly-right.safetensors

• ltx-2-19b-lora-camera-control-jib-down.safetensors

• ltx-2-19b-lora-camera-control-jib-up.safetensors

• ltx-2-19b-lora-camera-control-static.safetensors

Advanced Techniques

Sources

• ComfyUI-LTXVideo Official Repository