Microsoft: WPF/e = Silverlight

Microsoft announced the public release name for the technology/plug-in previously known by its code name “WPF/e” (Windows Presentation Foundation Everywhere) today as “Silverlight.” Although Microsoft has preferred that the technology not be compared with Adobe’s (formerly Macromedia) ubiquitous Flash plug-in, it’s hard not to make the comparison. Both plug-ins leverage vector based graphics and scripting languages to allow the delivery of richer-than-HTML multimedia experiences, and both have a focus on the delivery of video content.

I worked at Microsoft last year for a few months prior to returning to my post at Terralever. While there, I participated in a program in which Microsoft brought in multimedia designers to put Silverlight through its paces. They were working on a version of the plug-in that was still in development and were working without documentation. Even with those limitations, the resulting demos did show promise in the hands of the highly qualified multimedia designers.

But, who would consider Silverlight over Flash? Here’s some thoughts on Silverlight:

  • For designer-developers who are more fluent in JavaScript (or AJAX) Silverlight may be easier to transition to than Flash
  • For RIA’s (Rich Internet Applications) that involve communication between an HTML page and multimedia content housed within it, Silverlight may prove to be a more seamless solution as the Silverlight object is a part of the DOM
  • This is a v1 product for Microsoft, who usually starts firing on all cylinders around v3, and, Microsoft seem serious about its movement into this space
  • Video is the hot topic on the web right now. Flash is currently able to stream a maximum of 576 lines (per Ars Technica) whereas video encoded with Microsoft’s VC-1 codec can be streamed at 720 lines. Silverlight also handles scaling video while it is being viewed beautifully.

Silverlight’s biggest hurdle? Gaining the mind share of multimedia designers—and doing so with a PC-only development ecosystem (Microsoft Expression).

The cross-browser plug-in is currently available for both Internet Explorer and Firefox on the PC as well as Safari and Firefox on the Macintosh.

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