<h3 id="important-notice">Important Notice</h3>Optimized to work with the latest version of ComfyUI (v0.18.1 + Frontend 1.42.8).The latent upscaler ltx-2.3-spatial-upscaler-x2-1.1 has been released. Version 1.0 had an issue where a strange overlay appeared at the end when generating long videos (241F+), but this has been fixed in 1.1. Updating is strongly recommended.<h3 id="overview">Overview</h3>A simple LTX-2.3 workflow. It uses the Distilled GGUF model for fast generation. <h3 id="latest-news-(v1.4)">Latest News (v1.4)</h3>Major feature update! An experimental extension feature has been added. You can extend videos by looping a specified length and number of iterations. Prompts can be defined for each chunk, enabling scenario-based generation.Added a Double-Frame Mode. For use with intense motion. By rendering at twice the frame rate, facial distortion is less likely to occur.<h3 id="core-features">Core Features</h3>Single / Extend Generation ModeYou can choose whether to generate the video once or extend it afterward.Three prompt input modes<ol><li>Prompt enhancement using Ollama</li><li>Native LTX prompt enhancement</li><li>Plain (no enhancement)</li></ol>If Ollama is not needed, you can disconnect it from the Ollama SubGraph node or simply delete the node.1-pass / 2-pass selection<ul><li>1-pass: Generates at the specified resolution (e.g., 1280×736).</li><li>2-pass: Recommended by Comfy / LTX. Generates at half resolution and then performs 2× upscaling.</li></ul><h3 id="optional-features">Optional Features</h3>Preview Switch: Displays a preview during sampling.Audio-driven: Generates a video that matches an existing audio file.T2V Switch: Ignores the start image and generates the video using text-to-video.Full Mode: Generated using Steps 15 and CFG 3.0. This takes a very long time. While the camera work and motion may be slightly improved, the generation time is not practical.<h3 id="note">Note</h3>If you encounter the error, please update ComfyUI-KJNodes to the latest version.For HD generation in 2-pass mode, please use 1280×768 or 768×1280. If the shorter side is 734, it will be truncated to 704.

LTX-2.3 Long Video Generation (Distilled GGUF) workflows

v1.4.6 : Added Double Frame Mode.v1.4.3 : Added input video mode to the extension source.

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