This post was last modified: 2023-02-14, 12:10 by lightatwork. Edit Reason: Checking XMP files

Hi Gunther,

I've hit something that might be a bug.

Everything on iMac Pro (Intel) (OSX 12.6.3)
LRT version 6.3.0 (build 844)
LR Classic version 12.1
Camera Raw 15.1

I've worked with a a lot of long-term, JPG-based sequences before. I always first convert these to DNG files in Lightroom without any editing. Once DNGs, I load the sequence in LRT, initialize, set keyframes and drag to LR. There I edit keyframes, save metadata, back to LRT, auto transition, etc.

Before, I was always able to correct the white balance and tint of the keyframed DNG files in Lightroom. They are relative values, so default they are 0, and you correct +/- and let LRT interpolate between them.

Right now (repeatable, also after clearing metadata and starting from scratch following the FAQ meticulously (https://forum.lrtimelapse.com/Thread-key...vise-versa)), it seems, either LR is not writing the temp en tint values correctly in the XMP's, or LRT is having trouble in reading them. All in all, I see no correct WB corrections in my sequences once they are back in LRT. This was not an issue before.

I've manually opened an XMP file from a DNG that has a WB and Tint correction of +15 (just for testing) and I can not find this anywhere in the XMP file. So perhaps the issues lies with LR, not LRT.

Anyway, could you have a look into this? If you at least can find where the issue lies, I know which software (LR? LRT? CameraRaw?) to try to roll back to a version that works. Thanks!

Edit: I've found an old tread on the LRT forum which describes closely what I am experiencing: https://forum.lrtimelapse.com/archive/in...-4771.html

Edit 2: The "IncrementalTemperature" and "IncrementalTint" values described in the old thread are not present in the XMP files that LRT creates when initializing. Could that be a smoking gun?

Regards, Jorrit

it seems as if Adobe changed a tag that LRTimelapse uses to identify whether a DNG file is "flat" (baked in, relative Whitebalance) or contains "raw" data (absolute Whitebalance). I'll rework the detection in the next beta.
Until then please use the menu item "Metadata / Set Whitebalance Treatment" to manually set the mode for DNG sequences from JPGs to "Relatve WB-Treatment". You only need to do this once per sequence, best do it right after loading it for the first time.

This is fixed in LRTimelapse 6.4.0 beta 7, please test and let me know your feedback in the beta forum: https://forum.lrtimelapse.com/Thread-lrt...4-0-beta-7