LTX-2.5-GGUF

LTX-2.5 (22B Distilled Transformer) - GGUF Quantizations

This repository contains GGUF quantizations for Lightricks/LTX-2.5, including the 22B distilled transformer model.

These weights are compatible with ComfyUI-GGUF.

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Converted Files & Models

1. Main Diffusion Models (diffusion_models/)

• Base Architecture: LTX-2.5 22B Distilled Transformer
• Directory: ComfyUI/models/diffusion_models/ (or ComfyUI/models/unet/)

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Example ComfyUI Workflows (workflows/)

This repository includes ready-to-use ComfyUI workflow JSON files in the workflows/ folder:

1. Text-to-Video (T2V):
   • File: workflows/video_ltx2_5_t2v-gguf.json
   • Generates video directly from text prompts using the GGUF transformer.
2. Image-to-Video (I2V):
   • File: workflows/video_ltx2_5_i2v-gguf.json
   • Animates a single source frame with synchronized audio and motion.
3. First & Last Frame to Video (FLF2V):
   • File: workflows/video_ltx2_5_flf2v-gguf.json
   • Interpolates seamless video transitions between two keyframe images.

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ComfyUI Setup & Requirements

Required Custom Nodes

• GGUF Loader: molbal/ComfyUI-GGUF (Registry: comfyui-gguf-reboot)
  • Node: UnetLoaderGGUF (select the .gguf transformer model)

Additional Model Dependencies

Ensure you place the upstream support weights into their respective folders:

• Text Encoder / CLIP: Gemma 4 12B with projection (ComfyUI/models/clip/ or text_encoders/)
• Video VAE: ltx-2.5-video-vae-bf16.safetensors (ComfyUI/models/vae/)
• Audio VAE: ltx-2.5-audio-vae-bf16.safetensors (ComfyUI/models/vae/)