ComfyUI-LTXVideo: LTX-Video Nodes for ComfyUI

ComfyUI-LTXVideo is a custom node collection by Lightricks that brings LTX-Video model support directly into ComfyUI. With built-in cinematic-quality 13B models, lightweight quantized variants, and multi-scale latent upscalers, it enables anyone to generate high-fidelity videos without writing any code, streamlining workflows for creators, educators, and AI enthusiasts alike.

Usage

1. ComfyUI Manager Install: Ensure ComfyUI is installed. If not, follow the official ComfyUI documentation to set up your environment.

2. Plugin Installation: In ComfyUI-Manager’s custom nodes tab, search for “ComfyUI-LTXVideo” and click Install to automatically configure dependencies.

3. Manual Setup (Optional):

   • Clone the repository:

git clone https://github.com/Lightricks/ComfyUI-LTXVideo.git

• • Install requirements:

cd custom_nodes/ComfyUI-LTXVideo
pip install -r requirements.txt

1. • Download a compatible model (e.g., ltx-video-2b-v0.9.1.safetensors) from Hugging Face and place it in models/checkpoints.

2. Official Resources: Visit the LTX-Video official site for detailed docs and sample workflows.

Features

• Cinematic-Quality Outputs: The 13B model (v0.9.7) renders high-resolution videos at breakthrough speeds, rivaling traditional video pipelines.

• Quantized Speed Mode: A memory-efficient 13B quantized variant enables rapid inference on consumer GPUs like the RTX 4090/5090

• Multi-Scale Latent Upscaling: Spatial and temporal upscalers operate in latent space, preserving detail while accelerating processing.

• Simplified Workflows: Preconfigured node flows—image-to-video, keyframe extension, frame interpolation—allow one-click setup and experimentation.

• Prompt Enhancer Node: Automatically refines text prompts to boost output coherence and creative variety.

Scenarios

• Content Creation: Rapidly produce smooth clips for ads, social media, or storytelling without complex editing.

• Educational Demos: Demonstrate diffusion-based video generation techniques in labs or classrooms.

• Prototype Validation: Designers and PMs create dynamic mockups to test UX flows and visual concepts.

• Marketing Automation: Generate branded animations or GIFs at scale for marketing campaigns.

• Hobbyist Exploration: AI enthusiasts experiment locally with various models and prompt strategies.