Recommended: install VELVET VICE — LTX directly through ComfyUI Manager / Comfy Registry (velvet-vice-ltx), then restart ComfyUI and hard-refresh the browser with Ctrl+F5.

The complete Civitai release also includes the versioned one-click installer _START_HERE_INSTALL_V1.2.7.cmd as a manual/offline fallback. Never merge an older Velvet Vice LTX custom-node directory into a newer release.

Versioned autonomous prompt logic

The prompt Director exposes separate LTX 2.3 and LTX 2.5 profiles. The 2.3 profile adds no new control text and therefore retains the previous requests unchanged. The 2.5 profile treats the connected image as the exact first frame, emphasizes motion and chronological action instead of re-describing the source, keeps a continuous take, integrates caused audio, and prepares a grounded brief for the optional Gemma enhancer. Manual prompts remain exact passthrough text in either profile.

Starting with v1.2.5, the selector is optional at the backend boundary. ComfyUI can omit a visible widget from the submitted API prompt in some workflow states. When that happens, Velvet Vice resolves the profile from workflow metadata, then from unambiguous LTX 2.5 model markers, and finally falls back to LTX 2.3. An explicit selector value always takes precedence. This keeps existing v1.2.4 workflow files compatible without changing either prompt profile.

VRAM cleanup after Stop/Interrupt

ComfyUI skips downstream nodes when sampling is interrupted, so a cleanup node placed after pass 1, 2, or 3 would never run in the failure case. The pack therefore installs an interruption-only lifecycle hook. After an interrupted Velvet Vice prompt has unwound safely, it stops the render monitor, unloads all tracked ComfyUI models, collects Python objects, and clears the CUDA/IPC cache. Successful prompts and non-Velvet-Vice workflows are not changed by this hook.

LTX 2.5 prompt enhancer

The 2.5 workflow additionally loads text_encoders/LTX 2.5/gemma4_e2b_it_bf16.safetensors through ComfyUI's core TextGenerateLTX2Prompt node. The image-aware enhancer runs after the existing Velvet Vice Director and is enabled by default through a lazy switch. Disabling the switch passes the original Director prompt through unchanged. The negative prompt is not enhanced. Its model selector is exposed directly in the native VELVET VICE · CORE LOADOUT, so future compatible enhancer models can be selected without changing the prompt pipeline. The adjacent Prompt Enhancer ON / OFF control is enabled by default and drives the lazy switch. OFF avoids evaluating the enhancer branch and preserves the Director prompt unchanged.

Preserved functionality

The LTX 2.3 branch and the existing Director, Power LoRA, Player, Live Preview, Watermark, three-pass render, postprocessing and UI behavior remain unchanged.

The web directory contains exactly six JavaScript files.