February 2012
Beginner to intermediate
94 pages
2h 45m
English
Content preview from Accessible EPUB 3Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 3. It’s Alive: Rich Content Accessibility
It’s now time to turn our attention to the features that EPUB 3 introduces to expand on the traditional reading experience; the excitement around EPUB 3 doesn’t come from text and images, after all.
This section takes focus on the dynamic aspects of EPUB 3. Rich media, audio integration, and scripted interactivity are all new features that have been added in this version. Some of these features, like audio and video support and scripting, introduce new accessibility challenges, while others, like overlaying audio on your text content and enhancing text-to-speech rendering, improve access for all. (The members of this latter group are also commonly referred to as accessibility superstructures, because they are added on top of core EPUB content to enhance accessibility.)
But let’s get back to business of being accessible…
The Sound and the Fury: Audio and Video
The new built-in support for audio and video in EPUB 3 has its pros and cons from both mainstream and accessibility perspectives. The elements simplify the process of embedding multimedia, but come at the expense of complicating interoperability, and by extension accessibility—specifically as relates to video.
There is currently no solution for the general accessibility problem of video, namely that not all reading systems may natively play your content. The video element permits any video format to be specified, but not all reading systems will support all formats. Support for one ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.