Importing a jpg with metadata in XMP sidecar (from FastRawViewer) - LR seems to ignore the metadata

[DonH]

I just imported several jpg files to which I had added metadata in FastRawViewer which was stored in xmp files. 

When I imported these files to Lightroom Classic, the metadata was not read with the files.

I did a test of the same metadata fields, also in FastRawViewer, but for a .NEF raw file (and xmp) and that metadata was successfully imported into Lightroom.

I've not seen this problem when importing jpgs with metadata added in PhotoMechanic, but It looks like PhotoMechanic actually edits the jpg to add the metadata fields and does not create an XMP.

MacOS Sonoma, Current Lightroom CC updates, FastRawViewer 2.0.8

In summary,

FastRawViewer:  Raw+XMP - Lightroom reads the xmp

FastRawViewer:  JPG+XMP - Lightroom appears to ignore the xmp (I'm not shooting Raw+JPG, these are only JPG frames)

PhotoMechanic:  Raw+XMP - Lightroom reads the XMP

PhotoMechanic:  JPG file modified - Lightroom reads the metadata from the JPG.

Has anyone used Lightroom to import JPG+XMP, what is supposed to happen, and, and any ideas how to fix this?

Thanks,

Don

[Ian Lyons]

With JPEG files, LrC expects to find the metadata embedded within the file itself. Therfore, it ignores the XMP sidecar.

[DonH]

Thank Ian - is there any way to change that behavior in Lightroom (or force a read of the xmp for a selection of jpg files)?

I tried "read metadata from file" and it seems to re-ead metadata from the jpg and still ignore the xmp - not surprising? 

Separately, I'll also look into the other end of the problem and see whether I can get FastRawViewer to update the JPG itself instead of writing a sidecar.

[JohanElzenga]

I tried "read metadata from file" and it seems to re-ead metadata from the jpg and still ignore the xmp - not surprising? 

By @DonH

No, obviously not. It would be more surprising if Lightroom would read the XMP this time, while ignoring it on import.

[DonH]

A solution to the problem I raised above was given to me by the FastRawViewer forum - that is, there is an option in FRV (that I initially couldn't find) to write metadata to the JPG file and not XMP.   I've confirmed that Lightroom can read the metadata thus written to JPG.

Thanks for the responses below clarifying Lightroom's handling of JPG metadata.

[Ian Lyons]

Good that you found a solution. That being said, FRV should be writing the metadata into the JPEG by default.