Forcing thumbnail production

[Phil_Rose]

Hi all, I just downloaded the trial and it was making my catalog for so long that, in the end I hit Clear Processing Queues. Now a lot of my later folders have no thumbnails built and I can't see how to make it build thumbnails for the current folder and add them to the db. Is there a way to make it build thumbnails for my current folder I am viewing? Is there also a way to continue the db creation from the point I got to?

Thanks for helping out in any way you can!

Phil

[Mario]

You don't say how many files you were processing. 10,000 or 200,000 files? JPEG? RAW? Video?
If IMatch takes a very long time when processing files, the most likely cause is that there are many files with problems, or that some sort of anti-virus is blocking IMatch or ExifTool when processing your images.
See IMPORTANT: Virus Checkers

Te log file of that session contains important info, e.g. warnings and errors IMatch has logged.

If you have forcefully cleared the processing queues (which should be used as a last resort only) you can just select the images not processed and then press Shift+Ctrl+F5 => Force Rescan.

[Phil_Rose]

Oh yes, it wasn't choking. I was just impatient! I have now done the force rescan and that has worked. Thanks!

[Mario]

Excellent 

IMatch does a lot when ingesting images:

+ Reading the metadata
+ Producing a 'rich' XMP record for the database, by combing existing EXIF, legacy IPTC, GPS and other metadata and mapping it into XMP
+ Reading file system information
+ Calculating a checksum for the file
+ Calculating the visual query data
+ Creating a thumbnail
+ Optionally: producing a cache file
+ Optionally: doing face detection and recognition

Speed varies, depending on the file format you are using (RAW is slower than JPEG, and a 500 MB TIFF file takes longer than a 3 MB JPEG file).
IMatch can process maybe 100-300 JPEG files per minute, but only 20 to 60 RAW files (depending on the format).

The good news is, this process needs to be done only once.