MobileRead Forums - View Single Post - Calibre crashes with some books when extracting Cover.

iridius · 03-08-2011, 01:00 AM

Okay, I have a theory:

Corrupted PDF files that cannot be opened in Adobe Acrobat Pro do not cause a crash, but nor (obviously) can a cover be extracted from them.

Twice I have had a crash (Calibre shutsdown in the middle of the bulk processing) when the PDF file had a huge first page (the cover picture) and all following pages were smaller. So maybe trying to extract too big a picture for the cover is causing this issue. When I copy the page in Adobe Acrobat I can paste it in the edit individual metadata section fine, and when I view from Calibre, it opens the file with Adobe Acrobat just fine, but if I try to extract/get cover from the file, it crashes. In bulk and individual edit metadata mode.

Any idea how to shrink the initial (cover) page in a PDF file so it's the same size as the other pages)

03-08-2011, 01:00 AM	#4
iridius Connoisseur Posts: 86 Karma: 10 Join Date: Feb 2011 Device: Kindle 3, iPhone (to get Dell Streak & iPad)	Okay, I have a theory: Corrupted PDF files that cannot be opened in Adobe Acrobat Pro do not cause a crash, but nor (obviously) can a cover be extracted from them. Twice I have had a crash (Calibre shutsdown in the middle of the bulk processing) when the PDF file had a huge first page (the cover picture) and all following pages were smaller. So maybe trying to extract too big a picture for the cover is causing this issue. When I copy the page in Adobe Acrobat I can paste it in the edit individual metadata section fine, and when I view from Calibre, it opens the file with Adobe Acrobat just fine, but if I try to extract/get cover from the file, it crashes. In bulk and individual edit metadata mode. Any idea how to shrink the initial (cover) page in a PDF file so it's the same size as the other pages)