New ePubs have no covers in Calibre

[snarkophilus]

Hi folks,

I've got a number of epubs added to Calibre from various sources (Kobo, Overdrive, darknet) that Calibre doesn't find the cover for. These almost always have a cover (usually called "cover.jpg"!).

I would have guessed the problem was in content.opf but here are two examples that are reasonably similar. On a book with no cover, the relevant parts of content.opf that mention "cover" are:

  <metadata ...
    ...
    <meta content="cover.jpg" name="cover" />
    ...
  <manifest>
    ...
    <item href="Images/cover.jpg" id="cover.jpg" media-type="image/jpeg" />

and an epub with a cover is quite similar:

  <metadata 
    ...
    <meta content="cover" name="cover" />
    ...
  <manifest>
    <item href="Images/cover.jpeg" id="cover" media-type="image/jpeg" />

I've left out references to cover.html or cover.xml.

I also have some epubs that don't have the meta content part, and only seem to have a cover.html (and related jpeg).

Any suggestions why Calibre isn't finding covers? A search of mobileread didn't turn up anything useful.

For a bonus, is there an easy way go assign "cover.jpg" or "cover.jpeg" from an existing epub as the cover. I've got a number of books I want to do this for, and manually exploding the epub to extract the cover is a bit tedious.

Cheers,
Simon.

[kovidgoyal]

Presumably you turned off reading metadata from inside files in the preferences. Turn it on again and you can use the bulk metadata edit dialog to add covers from files easily.

[snarkophilus]

Originally Posted by kovidgoyal

Presumably you turned off reading metadata from inside files in the preferences. Turn it on again and you can use the bulk metadata edit dialog to add covers from files easily.

Hi Kovid,

Under "Adding books" I already have a tick next to "Read metadata from file content rather than file name".

But using the bulk metadata editor I can add the covers from the ebook files just fine.

Cheers,
Simon.