Using Automation Blocks to Mirror Premiere Bins to Disk and Copy/Relink Media Automatically

Hey everyone, hope you're doing well.

I’ve been trying to build a custom automation inside Automation Blocks for Premiere Pro, and I wasn’t able to get a full working solution yet. I even tried using ChatGPT as a tutorial, but I still couldn’t make it work — so I’m hoping someone here can help or point me in the right direction.

Here’s the full concept I’m trying to achieve:

1. The workflow I’m imagining

I want to build a one-click media organizer that works directly from the Premiere Project panel.
The idea is to:

• Read the bin structure of the selected items

• Create the same folder structure on disk under the project folder

• Work only on selected items, not the whole project

• Copy media only if it doesn’t already exist

• If the file already exists, relink to it without creating duplicates

The expected workflow is:

1. Select clips in the Project panel

2. Run the Automation Block

3. It automatically:

   • Mirrors the bin hierarchy as folders

   • Copies missing media

   • Relinks everything to the new structure

The final result should be a clean, organized media folder that matches the bin layout inside Premiere.

2. Expected behavior step-by-step

• The script reads the selected items

• Builds the full bin path (TopBin / SubBin / SubSubBin)

• Uses the location of the .prproj file as the root folder

• Creates the folder tree if it doesn't exist

• Checks whether the media file is already in that folder

• If yes: relink only

• If no: copy and then relink

3. What I have tried so far

• I’m using Automation Blocks for Premiere Pro

• I created a block using “Run ExtendScript / JSX”

• I wrote a script that tries to:

  • Detect the project path

  • Detect the selected items

  • Get their parent bins

  • Build the folder structure

  • Copy media only when needed

  • Relink using changeMediaPath()

  • Wrap everything inside beginUndoGroup()

Right now, the idea is working conceptually, but the script does not run correctly inside Automation Blocks. That’s why I’m asking for help here.

If anyone has done something similar or knows the correct approach for Automation Blocks, I would really appreciate any guidance.
Thank you!