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DjzDatamoshV4.md

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DjzDatamoshV4 Node

Description

The DjzDatamoshV4 node is an advanced image effects node that performs motion vector-based style transfer between images. It can extract motion vectors from a source sequence of images and apply them to a target sequence, creating unique datamoshing effects. This node is particularly useful for creating artistic glitch effects and style transfers between different image sequences.

Parameters

Required Inputs

  1. target_images (IMAGE)

    • The sequence of images that will receive the motion vector effects
    • These are the base images that will be modified

  2. source_images (IMAGE)

    • The sequence of images to extract motion vectors from
    • These images define the movement patterns that will be applied

  3. mode (Dropdown)

    • Options:
      • extract_and_transfer: Extract vectors from source and apply to target
      • extract_only: Only extract vectors from source images
      • transfer_only: Only apply previously saved vectors to target images
    • Controls the operation mode of the node

  4. vector_file (STRING)

    • Default: "vectors.json"
    • The filename to save or load motion vectors
    • Used for storing extracted vectors or loading previously saved ones

  5. method (Dropdown)

    • Options:
      • add: Add the motion vectors to existing motion
      • replace: Replace existing motion with new vectors
    • Determines how motion vectors are applied to the target images

  6. gop_period (INTEGER)

    • Default: 1000
    • Range: 1-10000
    • Step: 1
    • Controls the Group of Pictures (GOP) period for MPEG encoding
    • Higher values create longer segments of related frames

Output

  • Returns a modified IMAGE sequence with the applied motion vector effects

Usage

Basic Workflow

  1. Connect a sequence of source images (for motion vector extraction)
  2. Connect a sequence of target images (to receive the effects)
  3. Choose the desired operation mode
  4. Set the vector file name if you want to save/load vectors
  5. Select the application method (add/replace)
  6. Adjust the GOP period if needed

Mode-Specific Usage

Extract and Transfer Mode

  • Extracts motion vectors from source images and immediately applies them to target images
  • Best for direct style transfer between two image sequences

Extract Only Mode

  • Only extracts and saves motion vectors from source images
  • Useful when you want to save motion patterns for later use

Transfer Only Mode

  • Applies previously saved motion vectors to target images
  • Requires an existing vector file from a previous extraction

Notes

  • The node requires external tools (ffgac and ffedit) for motion vector processing
  • Vector files are saved in the 'custom_nodes/motion_vectors' directory
  • Processing may take some time depending on the number and size of images
  • If processing fails, the node returns the unmodified target images