Hi Kovid,
The database App I use on my phone (but surely there are better ones, hope someone will point it out) import / export images fields as BLOB. The "code" of the image is in the dump file.
I was just asking if someone knew of to have the path transformed into the BLOB to import the covers into the DB...
Personaly, I find the way Calibre works perfect, so it is more a matter of a third party conversion than a Calibre "per se" problem
Thanks for any hint of idea
François