CRT-Nodes for ComfyUI

This repository contains a comprehensive suite of custom nodes for ComfyUI, designed to provide advanced capabilities in Image Post-Processing, Audio Processing, FLUX/WanVideo workflows, and general utility management.

Note: Some nodes can require specific external libraries including pedalboard (audio), ultralytics (face detection), color-matcher, and sageattention.

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Node List

Audio Processing

A collection of tools for manipulating audio, visualizing waveforms, and synchronizing audio with video frames.

| Node Name | Description | | :--- | :--- | | Tube Compressor | Advanced audio compressor with threshold, ratio, attack, release, and soft-clipping controls. Includes visual gain reduction metering. | | Parametric EQ (CRT) | 8-band parametric equalizer with interactive frequency response visualization. Supports Bell, Shelf, Pass, and Notch filters. | | Preview Audio (CRT) | Enhanced audio player with waveform visualization, VU meters, LUFS metering, and scrubbing. | | Audio/Manual Frame Count | Calculates the number of frames required for a video based on audio duration and FPS, with optional quantization for WanVideo models. | | Video Duration Calculator | Simple utility to calculate duration in seconds from FPS and frame count. |

Visual FX & Post-Processing

Nodes focused on image grading, effects, and restoration. The suite includes a primary All-In-One node and standalone effects.

| Node Name | Description | | :--- | :--- | | CRT Post-Process Suite | Master node containing 12+ effect categories: Levels, Color Wheels, Temperature/Tint, Sharpening, Glow, Glare, Chromatic Aberration, Vignette, Radial Blur, Film Grain, and Lens Distortion. | | Advanced Bloom FX | High-quality bloom effect with threshold, smoothing, radius, and intensity controls. | | Arcane Bloom FX | Stylized bloom effect with saturation and exposure controls for a dreamlike look. | | Clarity FX | Enhances local contrast and texture definition without affecting global brightness. | | Color Isolation FX | Isolates specific hues while desaturating others, with adjustable falloff and background options. | | Colourfulness FX | Adaptive saturation adjustment that prevents clipping using luma limits. | | Contour FX | Edge detection node capable of generating line art or overlays. | | Film Grain FX | Procedural film grain generator with shadow/highlight masking and color noise options. | | Lens Distort FX | Simulates physical lens distortion including barrel/pincushion and chromatic separation. | | Lens FX | Combined lens effects node offering chromatic aberration, vignette, and grain in a single pass. | | Prism FX | Spectral dispersion effect that separates color channels radially. | | Smart DeNoise FX | Reduces noise while preserving edges using sigma and threshold parameters. | | Technicolor 2 FX | Emulates the 2-strip Technicolor process for vintage color grading. | | Chroma Key Overlay | Basic green screen removal with spill suppression and background compositing. |

GenAI Tools

Workflows and samplers optimized for diffusion models.

| Node Name | Description | | :--- | :--- | | FLUX All-In-One (CRT) | Comprehensive node managing Models, LoRAs, ControlNet, Inpainting, Face Enhancement, and Upscaling in a tabbed interface. | | Flux Controlnet Sampler | Specialized sampler for Flux models with integrated ControlNet support. | | Flux Controlnet Sampler (Injection) | Extended sampler supporting noise injection for texture control. | | Flux Tiled Sampler (Advanced) | Tiled sampling implementation for high-resolution generation with reduced VRAM usage. | | Flux LoRA Blocks Patcher | Provides fine-grained control over Flux LoRA weights, allowing adjustment of specific Single and Double blocks via sliders. | | Flux Semantic Encoder | CLIP/T5 text encoding node supporting "Semantic Shifting" and token injection. | | Wan Batch Sampler | Specialized sampler for Wan2.1 video generation, managing High-Noise and Low-Noise model phases. | | Wan2.2 LoRA Compare Sampler | Tool for comparing different LoRA configurations for Wan2.2 models side-by-side. | | Wan Video Multi-LoRA Select | Interface for selecting and stacking multiple LoRAs for WanVideo workflows. | | Face Enhancement Pipeline | Automated pipeline using YOLO models to detect, crop, upscale, and restore faces in images. | | Pony Face Enhancement Pipeline | Variant of the face enhancement pipeline optimized for Pony-based models. | | Pony Upscale Sampler | Upscaling sampler specialized for Pony models with noise injection capabilities. | | Latent Noise Injection Sampler | Injects noise into latents at specific percentage steps during sampling to add detail or texture. | | KSampler Batch (CRT) | Batch processing sampler supporting parallel and sequential modes. | | Upscale using model adv (CRT) | Advanced model-based upscaler with tiling support and memory management. |

Loaders & Crawlers

Smart loading nodes that can scan directories and select files based on seeds or specific criteria.

| Node Name | Description | | :--- | :--- | | Audio Loader Crawl | Recursively scans a folder for audio files and selects one based on a seed value. | | File Loader Crawl | Recursively scans a folder for text files and selects one based on a seed. | | File Loader Crawl Batch | Batch version of the file loader, returning multiple strings from a directory. | | Image Loader Crawl | Recursively scans a folder for images and selects one based on a seed. | | Video Loader Crawl | Recursively scans a folder for video files and selects one based on a seed. | | Load Last Image | Automatically loads the most recently modified image file from a specified directory. | | Load Last Video | Automatically loads the most recently modified video file from a specified directory. | | Load Last Latent | Automatically loads the most recently modified .safetensors latent file from a directory. | | Load Video (V-Captioning) | Efficient video loader designed for captioning workflows, supporting frame skipping and limits. | | Load & Resize Image | Loads an image and immediately resizes it to a target dimension or multiple. | | LoRA Loader (String) | LoRA loader that outputs the LoRA name as a string for logging or logic purposes. |

Savers

Nodes for saving various data types with customizable paths and naming conventions.

| Node Name | Description | | :--- | :--- | | Save Image With Path | Saves images to a specific folder and subfolder structure. | | Save Video With Path | Saves video files to a specific folder using FFmpeg. | | Save Audio With Path | Saves audio waveforms to a specific folder as WAV files. | | Save Text With Path | Saves text strings to a specific folder as TXT files. | | Save Latent With Path | Saves latents to a specific folder as .safetensors files. |

Logic & Utilities

Helper nodes for string manipulation, math, and workflow logic.

| Node Name | Description | | :--- | :--- | | CRT String Batcher | Combines multiple string inputs into a single batch or concatenated string. | | CRT String Splitter | Splits a text block into multiple string outputs based on delimiters or newlines. | | CRT Dynamic Prompt Scheduler | Coordinate prompts and images for batch generation sequences. | | File Batch Prompt Scheduler | Reads text files from a folder to create a scheduled batch of prompts. | | Autoprompt Processor | Processes prompt strings with search/replace functionality and prefixing. | | Advanced String Replace | Performs multiple find/replace operations on a string with exclusion lists. | | Remove Trailing Comma | Cleans up prompt strings by removing trailing commas. | | Smart Preprocessor | ControlNet preprocessor wrapper that bypasses processing if strength is set to 0. | | Resolution Calculator | Calculates width and height based on aspect ratio and target megapixel count or side length. | | Image Dimensions from MP | Calculates target dimensions from a total megapixel count. | | Percentage Crop Calculator | Crops an image based on percentage values rather than pixels. | | Quantize and Crop Image | Crops and resizes images to standard bucket sizes (e.g., 512, 768, 1024). | | Get First & Last Frame | Extracts the start and end frames from a batch of images. | | Seamless Loop Blender | Blends the start and end of an image batch to create a seamless loop. | | Simple Toggle | Boolean switch for controlling workflow logic. | | Simple Knob | Float value controller with a knob UI. | | Boolean Invert | Inverts a boolean value (True -> False). | | Boolean Transform | Converts numbers or strings into boolean values. | | Strength to Steps | Calculates start/end steps based on a percentage strength value. | | Mask Empty Float | Logic gate that outputs a float value depending on whether a mask is empty. | | Mask Pass or Placeholder | Passes a mask if valid, or generates a placeholder mask if missing. | | Enable Latent | Gate node to pass or block a latent based on a boolean toggle. | | Empty Context | Generates a null context object for WanVideo workflows. | | Toggle LoRA Blocks (L1/L2) | Helper nodes for generating block selection strings for LoRA patching. | | Sampler Scheduler Selector | Simple dropdown selector for sampler and scheduler names. | | Sampler & Scheduler Crawler | Iterates through sampler/scheduler combinations based on a seed for testing. | | Smart Style Model Apply | Applies style models with caching and dual-input support. | | Smart ControlNet Apply | Applies ControlNet with intelligent bypassing if strength is zero. | | Clear Dual Style Cache | Utility to clear the cache of the Smart Style Model node. | | Add Text Overlay | Adds text/settings overlays to images for comparison grids. | | Fancy Note | A sticky note node for the graph with customizable colors and text size. | | Fancy Timer | Displays execution time for workflows. |