- #Html5 accessibility screen reader update#
- #Html5 accessibility screen reader upgrade#
- #Html5 accessibility screen reader full#
- #Html5 accessibility screen reader software#
- #Html5 accessibility screen reader windows#
Now, with funding provided by the Reader's Digest Partners for Sight Foundation, NCAM has combined TTS technology with advances in markup languages and applied them in new and innovative ways to deliver accessible supplemental information that helps make science- or math-focused video materials more accessible to blind and visually impaired users. These users must not only be alerted to the presence of these on-screen resources, but the resources themselves must be accessible to assistive technology. While this can be a useful and exciting way to give students supplemental information in real-time, users who are blind or visually impaired may be completely unaware that these enhancements are opening on the page.
#Html5 accessibility screen reader windows#
These days, some authors are experimenting with not just passively playing video on a Web page, but instead are launching supplemental materials, or enhancements, on the page in real time while the video continues to play: for example, while a video of a biology lecture about Eastern Cricket Frogs plays on a page, pop-up windows appear at appropriate intervals showing maps of the frog's habitat, or Wikipedia entries about Eastern Cricket Frogs, or pictures of predators. For examples of how TTS descriptions can be integrated into Web-based video, see the solutions from IBM-Research Tokyo and the Carl and Ruth Shapiro Family National Center for Accessible Media (NCAM) at WGBH that illustrate effective methods for using HTML5 and Javascript to deliver text-based audio descriptions. New approaches to creating and delivering video descriptions are now in development, such as those which replace human narration with machine-generated, text-to-speech (TTS) narration. When it comes to making video accessible to blind and visually impaired audiences, the use of video descriptions (also known as audio descriptions) has been the traditional route. Accessible video, while not exactly mainstream, is slowly becoming more available thanks to innovative approaches to delivering captions and video descriptions as well as new regulations and legislation, such as the Twenty-First Century Communications and Video Accessibility Act.
#Html5 accessibility screen reader full#
Much as how browser emulators and simulators are not an effective solution for testing full support, proxy assistive technology solutions aren't sufficient to fully guarantee functionality.The use of video is now an established method for delivering information and entertainment on the Web, and its inclusion in Web pages and other electronic materials has been greatly simplified thanks to the introduction of new technology and markup, such as HTML5's video element. It is also important to test your authored ARIA with actual assistive technology. Because of this, it is important to use semantic HTML elements whenever possible, as semantic HTML has far better support for assistive technology.
#Html5 accessibility screen reader upgrade#
It is also important to acknowledge that some people who rely on assistive technology are reluctant to upgrade their software, for fear of losing the ability to interact with their computer and browser.
#Html5 accessibility screen reader software#
Older software versions may not support certain ARIA roles, have only partial support, or misreport its functionality. In addition, the version of the operating system, browser, and assistive technology are contributing factors. Support is based on the operating system and browser being used, as well as the kind of assistive technology interfacing with it. Like any other web technology, there are varying degrees of support for ARIA. It would have been much simpler to use the native element instead: The above progressbar needs to be styled to make it look like a progressbar. Similarly, no features should be included targeting assistive technology users that aren't also accessible to those not using assistive technologies. function updateProgress ( percentComplete ) Īll content that is available to non-assistive technology users must be made available to assistive technologies.
#Html5 accessibility screen reader update#
setAttribute ( "aria-valuemax", 100 ) // Create a function that can be called at any time to update // the value of the progress bar. getElementById ( "percent-loaded" ) // Set its ARIA roles and states, // so that assistive technologies know what kind of widget it is.