Thread: EPUB container
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Old 08-11-2024, 04:11 AM   #6
Quoth
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Posts: 14,412
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Join Date: Jun 2017
Location: Ireland
Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper
Quote:
Originally Posted by KevinH View Post
If it is an epub3, and if the remote resource is an actual video and not a link to a web page with the video embedded, simply go to the opf manifest for this file and add "remote-resources" under properties. This tells the ereader that that specific xhtml page accesses a remote resource.

Then add a manifest entry to point to the remote resource.
Yes, that works but is pointless. What you have is useless without the internet and a decent webpage will work better, without having to find an epub3 app that does multimedia.

There are many things that work in epub3 that simply use epub3 as a kind of app framework for an epub3 app (player), but that doesn't mean that they are genuine ebooks that can be distributed as ebooks.
A PDF is an electronic document, not an ebook. Simulating that in epub3 or kfx etc doesn't make a real ebook (reflowable), but just something that on Amazon doesn't use Adobe DRM.
You can make a perfectly working interactive multimedia presentation with epub3, but it's not an ebook, even though epub3 can be used to produce perfect ebooks with extra sematics for TTS compared to epub2, or "prettier" and more complex layout.

So epub3 allows broadly 4 kinds of things:
  1. An ebook that still works fine on an epub2 renderer.
  2. An ebook that only works (or properly works) on an epub3 renderer.
  3. A fixed layout mimicking what a PDF does. Electronic, but not an ebook.
  4. An interactive and/or multimedia experience. This is not an ebook. Available since later 1980s even on DOS. Frameworks for iOS/Android, but the epub3 is easier to learn. Some good programs to author since win 3.1 (not Powerpoint), oddly fewer now on Win1x as replaced by browser based authoring.

#1 will redistribute on all ebook platforms
#2 will redistribute on some ebook plaforms
#3 will redistribute on Amazon as a Kindle ebook, but of eink Kindles, only to the Scribe.
#4 will not redistribute as an ebook. It needs a compliant epub3 app.

Anything with major or important content online (i.e. anything more than link to publisher or other books) is better as either a web page or an app that needs the internet. It's not a ebook and no-one will distribute it as an ebook. It's also useless without the internet.
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