Lightroom Edit Interpolator

This tool interpolates the .xmp files generated by Lightroom to have "in-between" edits. Ideal for timelapses.

How to use

1. Edit the first and last photo of your timelapse or series of photos.
2. Copy the first edit settings to all the photos except the last one, this is to make sure that not interpolable values are also set, for example "Film Simulation" for fujifilm.
3. Export your photos from lightroom as "original + settings" that should save your raw files alongside with your settings.
4. Save a backup of your photos, this script will make its own backup to /bak, but photos are valuable and better to be safe.
5. Run the script

cd folder_with_all_xmp
npx lightroom-interpolator .

6. Import your photos again, you might need to delete the original ones.

It reads all the .xmp files on the folder, finds the first and last one by ordering them by name, and interpolates all the rest. It saves a copy of every .xmp to a new ./bak folder.

How it works

The scripts find "interpolable" values on the .xmp file, those values are defined on the ./interpolator-settings.json file.

Here is an excerpt of an .xmp file.

crs:SaturationAdjustmentRed="+11"
crs:SaturationAdjustmentOrange="+9"
crs:SaturationAdjustmentYellow="+11"
crs:SaturationAdjustmentGreen="+42"
crs:SaturationAdjustmentAqua="0"
crs:SaturationAdjustmentBlue="+29"
crs:SaturationAdjustmentPurple="+35"
crs:SaturationAdjustmentMagenta="+24"

Then saves the values from the first and last .xmp files, and writes all of them depending on their position on the list of files sorted by name.