A collection of high-performance custom nodes for ComfyUI designed to detect blur, calculate sharpness scores, and automatically extract the best frames from videos or image batches.

This pack includes two distinct approaches:

Parallel Video Loader: A multi-threaded, path-based loader for processing massive video files directly from disk (Low RAM usage).
Standard Sharpness Duo: A classic filter setup for processing images/latents inside your existing workflow.

🚀 Key Features

1. New: Parallel Video Loader (Path-Based)

Zero-RAM Scanning: Scans video files directly from disk without decoding every frame to memory.
Multi-Threaded: Uses all CPU cores to calculate sharpness scores at high speed.
Batching Support: Includes a "Page" system to process long movies in chunks (e.g., minute-by-minute) without restarting ComfyUI.
Smart Selection: Automatically skips "adjacent" frames to ensure you get a diverse selection of sharp images.

2. Standard Sharpness Duo (Tensor-Based)

Workflow Integration: Works with any node that outputs an IMAGE batch (e.g., AnimateDiff, VideoHelperSuite).
Precision Filtering: Sorts and filters generated frames before saving or passing to a second pass (img2img).

📦 Installation

Clone this repository into your custom_nodes folder:

cd ComfyUI/custom_nodes/
git clone https://github.com/ethanfel/ComfyUI-Sharp-Selector.git