ComfyUI Extension: ComfyUI Video Crop

Authored by snomiao

Created

Updated

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A ComfyUI custom node for cropping videos using FFmpeg with pixel-precise control.

Custom Nodes (0)

    README

    ComfyUI Video Crop

    A ComfyUI custom node for cropping videos using FFmpeg with pixel-precise control.

    Features

    • Pixel-precise cropping: Specify exact x, y coordinates and dimensions
    • Multiple output formats: MP4, WebM, AVI, MOV
    • Codec options: H.264, H.265, VP9, ProRes
    • Quality control: Adjustable quality/compression settings
    • Custom FFmpeg arguments: Add your own FFmpeg parameters
    • Frame rate control: Set output frame rate

    Installation

    1. Clone this repository into your ComfyUI custom_nodes directory:
    cd ComfyUI/custom_nodes
git clone https://github.com/snomiao/ComfyUI-Video-Crop.git

    1. Install FFmpeg if not already installed:

      • Ubuntu/Debian: sudo apt install ffmpeg
      • macOS: brew install ffmpeg
      • Windows: Download from https://ffmpeg.org/download.html

    2. Restart ComfyUI

    Usage

    1. Add the "Video Crop (FFmpeg)" node to your workflow
    2. Connect your video input (IMAGE tensor from video loader)
    3. Set crop parameters:
      • X, Y: Top-left corner coordinates in pixels
      • Width, Height: Crop dimensions in pixels
      • Output Format: Video container format
      • Codec: Video compression codec
      • Quality: Compression quality (lower = better quality)
      • FPS: Output frame rate
      • Extra FFmpeg Args: Additional FFmpeg parameters (optional)

    Node Parameters

    Required

    • video: Input video as IMAGE tensor
    • x: Crop X coordinate (pixels)
    • y: Crop Y coordinate (pixels)
    • width: Crop width (pixels)
    • height: Crop height (pixels)
    • output_format: Video format (mp4, webm, avi, mov)
    • codec: Video codec (libx264, libx265, libvpx-vp9, prores)
    • quality: Quality/CRF value (0-51, lower is better)

    Optional

    • fps: Output frame rate (default: 30.0)
    • extra_ffmpeg_args: Additional FFmpeg arguments

    Examples

    Basic crop

    • X: 100, Y: 50
    • Width: 640, Height: 480
    • Format: mp4, Codec: libx264, Quality: 23

    High quality crop with custom settings

    • Extra FFmpeg Args: -preset slow -tune film
    • Quality: 18 (higher quality)

    Requirements

    • ComfyUI
    • FFmpeg (system dependency)
    • Python packages: PIL, numpy, torch, ffmpeg-python

    Installation Notes

    This node uses the ffmpeg-python library instead of direct subprocess calls for better integration and error handling. The library still requires FFmpeg to be installed on your system.

    License

    MIT License

    Contributing

    Issues and pull requests welcome!