You can also use the style attribute to specify px or % width and height values (I’ll use both in the examples that follow). But, just as with img tags, it’s always best to specify the height and width attributes so that the page doesn’t need to reflow. When the browser has downloaded enough of a video to determine its native height and width, it resizes the video accordingly. It’s much simpler-just plain HTML that needs very little explanation. In the days of using Flash or Silverlight for video playback, the simplest possible markup to display a video (video.mp4 in this case) would have looked something like this: Ĭompare those nested object, param and embed tags with this HTML5 video tag used to play the same h.264-encoded video:
#FIREFOX HTML5 AUDIO ANDROID#
Some Android devices include Flash, but Adobe has recently discontinued its mobile Flash efforts, which means that HTML5 will be the only way to play media on mobile devices in the future. In addition, mobile devices running Windows Phone 7.5, Apple iOS and Android (as well as the Metro-style browser in Windows 8) support media playback only through HTML5 video and audio. Moreover, media that uses HTML5 video and audio performs better than media played through plug-ins such as Flash or Silverlight, resulting in longer battery life and smoother playback. HTML5 media has built-in support for captions and subtitles using the new track element, and proposals for additional features-such as direct byte access for video manipulation-are already being considered. If you can create buttons in HTML and control them with JavaScript, you already know all you need to develop HTML5 media. The advantage of using HTML5 for media is that you can leverage your HTML, CSS and JavaScript skills rather than learning Flash or Silverlight. In this article, I’ll explore the benefits of using HTML5 for media playback, show some sample code, address some major issues that developers face and present solutions to those problems.
Even retrofitting existing Flash and Silverlight video content for HTML5 playback has become fairly simple. Browsers and JavaScript libraries have matured to the point where you can-and should-use HTML5 media as the default for any projects that will display audio and video content.
#FIREFOX HTML5 AUDIO CODE#
The tags were great for companies writing experimental code or doing cross-browser media development, but the HTML5 media API was too unreliable for general use.
When the HTML5 audio and video tags were first introduced, codec and browser incompatibilities made them difficult to use and unrealistic to deploy on large-scale Web sites. Volume 27 Number 02 Building HTML5 Applications - Practical Cross-Browser HTML5 Audio and Video
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