I'm trying to recover some missing images en mass from Lightroom's preview data.
Each .lrprev file contains a line similar to this:
fileTimeStamp = 346514038.2051,
I've already extracted all the images from the previews as .jpg files, but they contain no metadata. I was hoping to somehow convert this timestamp value to an actual date which I can insert into the new .jpg files via
The value given above will hopefully correspond to Dec 25th, 2011 at approx 13:25 but I've tried all manor of conversions from popular timestamp formats (unix epoch, days since year 0, etc) and nothing has given me the right answer.
So, is this timestamp value documented anywhere? Maybe it doesn't even correspond to anything useful? Could it be the date the photo was imported, or date the preview was generated maybe?