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Old 03-28-2009, 01:00 PM   #46
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And I'm saying that the standard is being idiotic. It's not possible to have a unique ID for every ebook file ever created. And any reader system that relies on this aspect of the standard is going to fall flat on its face.
Do you think that the intended purpose of this is to "globally identify" every book ever created, or simply to provide a unique ID for every book that's likely to be in a user's catalog or on a library system? The latter would be quite straightforward to achieve.
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Old 03-28-2009, 01:35 PM   #47
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Do you think that the intended purpose of this is to "globally identify" every book ever created, or simply to provide a unique ID for every book that's likely to be in a user's catalog or on a library system? The latter would be quite straightforward to achieve.
The spec doesn't say. I have been assuming it is for the latter (i.e. to identify a book in a small collection), but, who knows.
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Old 03-28-2009, 01:56 PM   #48
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I do not see why it is a problem generating a unique id. If you have an ISBN use that. Otherwise use MAC address, time and uid on the computer you are using to build up the identifier. I doubt that you in practice will get any collisions.
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Old 03-28-2009, 02:40 PM   #49
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Returning to the original thread it is possible to already get books from Project Gutenberg by going to the site http://manybooks.net. The books are in a dozen or more different formats from PDF to Mobipocket (prc and mobi) to epub and ereader to name just a few choices.
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Old 03-28-2009, 04:34 PM   #50
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Originally Posted by timezone View Post
Returning to the original thread it is possible to already get books from Project Gutenberg by going to the site http://manybooks.net. The books are in a dozen or more different formats from PDF to Mobipocket (prc and mobi) to epub and ereader to name just a few choices.
Their formatting is quite poor and there are absolutely no inside illustrations on these books.
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Old 03-29-2009, 12:35 PM   #51
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Just a little reminder: The bigger PG Epubs won't work on Sony Reader because the PG Epubs aren't split up to respect the 300kb size limit of the reader. Can that only be considered an accident, then?

Nothing like that in sight as far as Mobis are concerned (works on Kindles, BeBooks, Cybooks, you name it)
I didn't know that Sony reader has this limitation for ePUB files - 300 KB. I opened illustrated book in ePUB format with size 6.5MB and had no problem to read it - just takes some time to open it. 300KB seems very small size especually for ebooks with many pictures.
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Old 03-29-2009, 12:48 PM   #52
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Originally Posted by Kris777 View Post
I didn't know that Sony reader has this limitation for ePUB files - 300 KB. I opened illustrated book in ePUB format with size 6.5MB and had no problem to read it - just takes some time to open it. 300KB seems very small size especually for ebooks with many pictures.
That is a little misunderstanding: The 300 kb size limit does not apply to the size of the book. We are only talking here about the size of the text chunks. An epub file has its text files not in one piece, but is split up. The size of these chunks is not allowed to go over the 300kb limit. The Gutenberg Epubs ignore that size limit and are not split up.
Last edited by mtravellerh; 03-29-2009 at 12:50 PM.
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Old 03-29-2009, 12:49 PM   #53
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I didn't know that Sony reader has this limitation for ePUB files - 300 KB. I opened illustrated book in ePUB format with size 6.5MB and had no problem to read it - just takes some time to open it. 300KB seems very small size especually for ebooks with many pictures.
300KB is not the maximum size for the ePUB file, it's the maximum size for each single XHTML file inside the ePUB (each "chapter"). Images do not matter here, I think their maximum size is 10MB.
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Old 03-29-2009, 01:05 PM   #54
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Originally Posted by mtravellerh View Post
That is a little misunderstanding: The 300 kb size limit does not apply to the size of the book. We are only talking here about the size of the text chunks. An epub file has its text files not in one piece, but is split up. The size of these chunks is not allowed to go over the 300kb limit. The Gutenberg Epubs ignore that size limit and are not split up.
I see. Thanks for explanation.
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Old 03-29-2009, 01:12 PM   #55
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300KB is not the maximum size for the ePUB file, it's the maximum size for each single XHTML file inside the ePUB (each "chapter"). Images do not matter here, I think their maximum size is 10MB.
I tried to compare the same illustrated books in ePUB and Mobi format and verry often books in ePUB format looks better but it takes more time to load it(after loading it works very fast).

It is interesting what is the % of non DRMed books available in ePUB and Mobi format now? and what will be this % in 1-2 years?
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Old 03-29-2009, 01:57 PM   #56
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It is interesting what is the % of non DRMed books available in ePUB and Mobi format now? and what will be this % in 1-2 years?
For ebooks you buy, there are still many more MOBIs. This is because long standing DRM-free sources, such as Baen and FictionWise, don't provide DRM-free ePub. Don't forget that there is currently no device that is ePub only, and several that are essentially MOBI-only.

However, for DRM-free ebooks in the US this is almost a non-issue because format shifting for personal use is almost universally thought to be a fair use under copyright law. MOBI to ePub, or better yet LIT to ePub, works very well. The reverse, ePub to MOBI is good enough for many uses but can hit the limits of the MOBI format.

For technical ebooks, the only reason there are any MOBIs is the Kindle. Without it, these would be exclusively PDF and ePub. This is because MOBI isn't up to displaying complex tables and code fragments. What O'Reilly and other publishers are going it converting all their "advanced" formatting into images optimized for the Kindle screen. A terrible approach, but they can't ignore the Kindle market.
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Old 03-29-2009, 03:28 PM   #57
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For ebooks you buy, there are still many more MOBIs. This is because long standing DRM-free sources, such as Baen and FictionWise, don't provide DRM-free ePub. Don't forget that there is currently no device that is ePub only, and several that are essentially MOBI-only.

However, for DRM-free ebooks in the US this is almost a non-issue because format shifting for personal use is almost universally thought to be a fair use under copyright law. MOBI to ePub, or better yet LIT to ePub, works very well. The reverse, ePub to MOBI is good enough for many uses but can hit the limits of the MOBI format.

For technical ebooks, the only reason there are any MOBIs is the Kindle. Without it, these would be exclusively PDF and ePub. This is because MOBI isn't up to displaying complex tables and code fragments. What O'Reilly and other publishers are going it converting all their "advanced" formatting into images optimized for the Kindle screen. A terrible approach, but they can't ignore the Kindle market.
I didn't find any company who sell non DRMed books in ePub format yet but
FictionWise for example sell non DRMed books in Mobi format. Any reason why they don't add ePub to the list of Multiformat books?
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Old 03-29-2009, 03:31 PM   #58
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I didn't find any company who sell non DRMed books in ePub format yet but
FictionWise for example sell non DRMed books in Mobi format. Any reason why they don't add ePub to the list of Multiformat books?
actually, PanMacMillan already sells drm-free epub. so do a few others, including the excellent O'Reilly, but these are technical books so not necessarily of interest to the general public.

i'm sure more will follow soon.
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Old 03-29-2009, 03:36 PM   #59
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actually, PanMacMillan already sells drm-free epub. so do a few others, including the excellent O'Reilly, but these are technical books so not necessarily of interest to the general public.

i'm sure more will follow soon.
There is a german book-seller who also offers drm-free german e-pubs
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Old 03-29-2009, 07:46 PM   #60
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They really do need an open source format for ebooks, which has been agreed upon by the major manufacturers. (not proprietary like PDFs are).

At the moment there is a mish mash of formats which work on some devices and are a pain in the butt for readers.
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