MobileRead Forums - View Single Post - Error message: Following books are virtual

davidfor · 11-08-2012, 08:19 AM

@agama: I don't know what happened with the second link. It works here, so I don't know. But, other than the text, they are the same.

For some other reason I also pulled one apart since I sent them to you. I can see what you mean about there being very few differences to an ePub. I thought there were more differences, but I suspect I have learnt a bit more since the last time I looked.

The spans with the id are used for Kobos bookmarking system. These get synced between devices. I don't know if they are used for anything else.

An annoying thing with this is the file names. On the devices, the file names are just a GUID without an extension.

With all that, it should be possible to bring kepubs without DRM into calibre. A conversion to epub would be basically just dropping the extra files. Or adding them to the manifest. A conversion to kepub is only complicated by the ids and whether to add the other files in.

11-08-2012, 08:19 AM	#15
davidfor Grand Sorcerer Posts: 24,905 Karma: 47303824 Join Date: Jul 2011 Location: Sydney, Australia Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos	@agama: I don't know what happened with the second link. It works here, so I don't know. But, other than the text, they are the same. For some other reason I also pulled one apart since I sent them to you. I can see what you mean about there being very few differences to an ePub. I thought there were more differences, but I suspect I have learnt a bit more since the last time I looked. The spans with the id are used for Kobos bookmarking system. These get synced between devices. I don't know if they are used for anything else. An annoying thing with this is the file names. On the devices, the file names are just a GUID without an extension. With all that, it should be possible to bring kepubs without DRM into calibre. A conversion to epub would be basically just dropping the extra files. Or adding them to the manifest. A conversion to kepub is only complicated by the ids and whether to add the other files in.