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Old 04-27-2009, 05:52 PM   #46
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And yet you cannot pigeonhole the standard to 2007 and set arbitrary limits on content files. Ten years from now (probably a lot sooner) even embedded devices will have more than enough resources to parse any kind of epub file, so such limitations would be a hindrance.
Sorry if i'm interfering but nobody says that they should include limitations. Though they could make clear what is the expected handling on devices with low resources. Sax and StAX, HTTP 1.1, MIME and a lot other specifications provide implicit solutions for low-resource devices. Why should a format specification like ePub doesn't take care of such concerns?

From the OPS specification:
Quote:
The specification is intended to give content providers (e.g. publishers, authors, and others who have content to be displayed) and publication tool providers, minimal and common guidelines that ensure fidelity, accuracy, accessibility, and adequate presentation of electronic content over various Reading Systems.
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Old 04-27-2009, 06:06 PM   #47
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Though they could make clear what is the expected handling on devices with low resources.
Tell me, what do you think should be the expected handling for huge single file epub books on a device like the Sony Reader?
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Old 04-27-2009, 06:07 PM   #48
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For me it's not so much SONY's 300KB file size limit that cause me concern, itt's the failed expectation that as long as I have an ePUB file I can read it on any ePUB device.
But that's unrealistic, you cant both have flexibilty and "read on any device", because flexibility requires processing power/memory to back it up. In the long run, I think flexibility is far more important that read anywhere.
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Old 04-27-2009, 06:07 PM   #49
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Originally Posted by Valloric View Post
Tell me, what do you think should be the expected handling for huge single file epub books on a device like the Sony Reader?
fallback to non CSS based rendering. in that case you dont have to load the whle html tree into memory
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Old 04-27-2009, 06:11 PM   #50
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As for the question of extensions, I think having one extension with various incompatible DRM schemes is an excellent thing. The time of ebooks and EPUB has come, nothing is going to stop them. This sort of craziness will hurt only one thig, DRM.
The problem, though, is that the same extension is also used for DRM-free ePubs. Perhaps we should use .epubf (or .fpub) for DRM-free ePubs and not worry about what the DRM vendors are doing. We would then need a logo and icon for DRM-free ePubs. This is =X='s branding point, but I don't see IDPF as likely to take the lead.
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Old 04-27-2009, 06:18 PM   #51
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The problem, though, is that the same extension is also used for DRM-free ePubs. Perhaps we should use .epubf (or .fpub) for DRM-free ePubs and not worry about what the DRM vendors are doing. We would then need a logo and icon for DRM-free ePubs. This is =X='s branding point, but I don't see IDPF as likely to take the lead.
So why not also do the same for all the other formats?
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Old 04-27-2009, 06:19 PM   #52
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Tell me, what do you think should be the expected handling for huge single file epub books on a device like the Sony Reader?
Well, i'm not a contributor of the ePub-specification and can only speak for myself. Why doesn't the reading software use a stax-like aproach when parsing XHTML for example? Why does the epub-producer have to split the file into parts if just those parts that are required could be read? It's not easy to implement such solutions (not because of the XML but because of the CSS-selectors for example) but developers do this day for day if they know that the targeted plattform is low on resources. A specification can take account of such concerns and include (or point to) best practices for such scenarios. It can also explain such scenarios in a more abstract manner than i did here.
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Old 04-27-2009, 06:22 PM   #53
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For me it's not so much SONY's 300KB file size limit that cause me concern, itt's the failed expectation that as long as I have an ePUB file I can read it on any ePUB device.
It is certainly a failure on Adobe's part that they will add their DRM to an ePub which isn't readable by their own mobile Adobe Digital Editions.

For DRM-free ePubs the situation is a bit different. Anyone can call their ebook an ePub, and there will be "standard conforming" ePubs that don't display on all devices. On the other hand, Calibre has demonstrated that a desktop-based format shifter can customize an ePub for a given device and Savory on the Kindle 2 is an indication that the same could be done on handheld devices directly.
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Old 04-27-2009, 06:23 PM   #54
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fallback to non CSS based rendering. in that case you dont have to load the whle html tree into memory
Then you would have users complaining how the epub doesn't display properly.
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Old 04-27-2009, 06:27 PM   #55
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So why not also do the same for all the other formats?
We could, but ePub is the only one not owned by a single vendor. I don't know that there is the same expectation that a DRM-free MOBI (say) will be readable by non-MobiPocket readers.
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Old 04-27-2009, 06:28 PM   #56
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Then you would have users complaining how the epub doesn't display properly.
Better than complaining tha it doesn't display at all
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Old 04-28-2009, 09:32 AM   #57
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How about:

.epub = non-drm

.crap = with drm

No confusion there
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Old 04-28-2009, 10:17 AM   #58
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How about:
.epub = non-drm
.crap = with drm
No confusion there
I heartily agree.
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Old 04-28-2009, 10:20 AM   #59
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.epub = non-drm

.crap = with drm
Wonderful! Two small words, describing whatever needed
Just add some kind of X (.crapA for Adobe crap, .crapF for Fictionwise crap, etc)
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Old 04-28-2009, 12:26 PM   #60
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The problem, though, is that the same extension is also used for DRM-free ePubs. Perhaps we should use .epubf (or .fpub) for DRM-free ePubs and not worry about what the DRM vendors are doing. We would then need a logo and icon for DRM-free ePubs. This is =X='s branding point, but I don't see IDPF as likely to take the lead.
That's a great idea! What a V8 moment. We have some talented graphic artists here anybody want to take a first stab?

I'll create a new thread.

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