LTExperiments

Context-window sampling for LTXV / LTX-2 (LTXAV) video models in native ComfyUI, including the multimodal (video + audio) path and IC-LoRA guide splitting — guides placed at arbitrary positions are spliced into each window they overlap.

This is a self-contained extraction of the work in Comfy-Org/ComfyUI#13325. It plugs into ComfyUI's existing extension points (model_options["context_handler"] + sampling wrappers) and does not edit or monkey-patch core. It works whether or not that PR is merged into your ComfyUI: when the base model provides the guide hooks it defers to them, otherwise it uses its own bundled implementation.

Node

LTEx LTXV Context Windows — drop it between your model and the sampler. Inputs are in real (pixel) frames; context_length snaps to 8n+1, context_overlap to multiples of 8. retain_first_frame keeps latent sub-pos 0 in both the conditioning and the noise latent (the right combo for inplace-style LTX-2 first-frame / AnimateDiff-style I2V). Advanced settings (stride, closed_loop, freenoise) are collapsed by default.

IC-LoRA guides

Guide support consumes the conds produced by the native LTXVAddGuide node — no extra setup beyond adding your guide(s) as usual. Guides are stripped from the working latent, then re-injected only into the windows they overlap, with keyframe_idxs / guide_attention_entries regenerated per window (downscaled IC-LoRA guides included).

Requirements

Native ComfyUI with LTXV / LTX-2 support. No extra Python dependencies.