Creating media player in flash

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Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions. All rights reserved. Join Sign In. Date: Nov 15, You can adapt the simple shapes available in Flash Catalyst, providing them with the power of interaction to make them serve as play, pause, and stop player buttons.

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The Flash player is ready for use! My Music Tools. Related [an error occurred while processing this directive]. Ask our expert How to share screen videos online? How to sort duplicate music files by ID3 tags? How to get quick updates on movies by director?

How to rotate videos? With Flash based components a screen reader is normally unable to interpret the function of a display object and users can become lost when navigating within the movie. Assistive technology adds capabilities that the computer doesn't usually have. For example, a visually impaired user might employ assistive technology such as a screen reader and voice recognition, rather than directly using the application with the mouse and screen. The Microsoft Active Accessibility API was first introduced to Windows as a means of allowing assistive technologies access to control and read applications as well as non-standard UI components.

It provides a method for identifying and manipulating user interface controls through non-standard means and allows the same components to alert the system when they change state, e. The MSAA API allows user controls or visual components to be assigned specific roles; these help the accessibility API to determine what the control does, its current state and how any assistive technologies can best interact with it.

The first step in making a Flash component accessible is to tag it with the necessary name and description, when the component becomes focused it will inform the screen reader of its descriptive name and how to operate it. Flash provides this functionality as part of the AccessibilityProperties class. Interacting with the screen reader is done via the Accessibility class. When a web page is loaded, a screen reader will take a snapshot of the page and maintain it in a virtual buffer, this needs to be kept in sync when the page changes.

For static HTML a screen reader can simply traverse the DOM but in Flash we must manually call back to the screen reader to inform it when the movie updates. This call need only be sent once to prevent spamming the screen reader with alerts, normally after all UI components have been initialised.

As mentioned above, Flash conforms to the MSAA spec which allows display objects to be tagged with specific roles, in Flash this can be done by the AccessibilityImplementation class. By tagging a component with an accessibility implementation a screen reader can query it to determine its function, its current state and its default action when activated. The AccessibleButtonImplementation. The button implementation is a very basic example of what can be achieved but shows that you can cater the functionality of a Flash component to better suit the needs of an accessible user if required.

You should avoid overcomplicating an interface, avoid nesting accessible components or controls with too many operations, sticking to simple buttons and form elements makes for a better experience and quicker navigation via the keyboard. Occasionally you may wish to inform a screen reader that an operation has taken place without prior user interaction, in the case of a media player this could mean a buffering spinner or error message has been displayed.

To avoid confusing the user as to why playback has been interrupted we want to send an audible alert to the screen reader. This can be easily achieved by taking advantage of screen reader support for HTML, by adding a Flash ExternalInterface callback to the webpage we can dynamically create hidden HTML alerts which are detected and read aloud by the screen reader. Code Example — Using an External Interface to send screen reader alerts.

A working example of all of the concepts discussed can be found on GitHub , or try out our full accessibility implementation using a screen reader on the BBC iPlayer website.

However there are many other products available including Microsoft Narrator, Nokia Talks, WindowEyes, ZoomText and Supernova, all have varying levels of support for Flash and should be considered when testing.

Support for Macintosh users with VoiceOver enabled is unfortunately not available as VoiceOver support for Flash was never implemented and Adobe recently announced their intention to scrap development of an accessible Flash Player for Macintosh.