Where does KOReader store extracted book covers?
I have an idea of applying these covers to cc.db so that Kindle can show books with covers in main menu.
I used sqlite on Kindle to replace an Entries called p_thumbnail with a path a random screenshot for specific book with:
Code:
sqlite3
UPDATE Entries SET p_thumbnail='/mnt/us/screenshot_2020_02_11T02_29_37-0500.png' WHERE p_location='/mnt/us/documents/fb2 books/Юваль Харари - Sapiens.fb2.zip';
.quit
Have a look at the attached screenshot: the second book has a screenshot as a cover. It Works!
So if I can reach book covers extracted by KUAL, I can make a script to attach these covers in Kindle menu.