Thread: AZW3 Manga to KEPUB
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Old 08-05-2017, 12:06 AM   #14
davidfor
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Join Date: Jul 2011
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Device: Kobo:Touch,Glo, AuraH2O, GloHD,AuraONE, ClaraHD, Libra H2O; tolinoepos
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Originally Posted by salamanderjuice View Post
I didn't use term organization. OP did.
Sorry, getting the posts mixed up.
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The whole cover thing kinda suggests a difference though...and I've stumbled on to quite a few. My O'reilly ePub's have that issue for instance.
If they do what I think they do, they put a smallish cover image on the first page at a fixed size. It doesn't stretch to fill the page. The device renders that and you get a small image surrounded by white. If you convert to kepub, the device will extract that image and display it at the sizes needed. Yes, the covers are handled differently, but, if the book is put together properly, it won't be noticeable.
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I just manually changed a book to rtl in the database as you described above. It changes the flipping direction in a non-kepub. But I don't think it'll pick it up on it's own or it requires a different method from kepubs and what works in ADE 4.5. That's probably another difference in handling.
No, I don't think the reading direction is pulled from the OPF for epubs. It might need a later version of the RMSDK, or it could be a bug they haven't fixed. Reporting it might get some action.

The reading direction can also be specified for parts of the book. I'm pretty sure I have a test book where different chapters page in different directions. I don't remember which this worked for.
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With fixed layouts and what epub comics do you don't need to be in full screen mode or have it enabled, nor to do you need to do anything to the image file itself to ensure the correct aspect ratio. It basically just creates a viewport the size of the image and then places it there. Sometimes they will shift it left or right depending on if it's a left or right hand page. It's pretty simple HTML-wise.
And that will work for an epub. Wrap the image in the right SVG code and it can fill the screen as much as possible depending on the aspect ratio and the area taken by the controls. What you can't do with epub is to get rid of the footer. Hence if you display an image with the same aspect ratio as the screen, you will get margins on the side. I'm not saying that kepub doesn't do it better, but, your original comments about epubs and images didn't fit with my experience.
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CBZ/CBR is okay, but there is no metadata,no TOC. There is no way to easily do RTL. And it's annoying to extract the image folder from a AZW3 and fiddle with it.
Those are good reasons and kepubs probably the simplest way to achieve them.

But...

Populating the metadata can be done via my Kobo Utilities. I'll probably add the direction as well as soon as I have time and work out the best method.

There is a ToC for CBR/CBZ on the device but it defaults to just "Page x". Fixing that would be "easy". The hardest part would be getting the actual ToC entries from somewhere.
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