Understanding Silverlight for Web Hosting Companies
Silverlight is a versatile web technology that provides cross-browser and cross-platform capabilities for creating rich internet applications. It allows for XML-based graphics, animation, audio, video, and event handling, scripted with JavaScript. Integration with web servers via AJAX design patterns makes Silverlight a valuable tool for web hosting companies. Media formats, streaming vs. progressive download, MIME types, web analytics integration, CDN integration, and additional services related to RIA construction are essential aspects that web hosting companies should know about Silverlight.
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Silverlight for Web Hosting Companies Michael S. Scherotter Microsoft Corporation mischero@microsoft.com
What is Silverlight? Cross Browser: Safari, FireFox, Internet Explorer Cross Platform: Mac, Windows XP, Windows Vista, and now Suse Linux (Moonlight) XML-based graphics, animation, audio, video, and events (XAML) scripted with JavaScript Integrates with Web Servers via AJAX design patterns
What do Web Hosting Companies Need to Know? 1. Media Formats 2. Streaming vs. Progressive Download 3. MIME Types 4. Integrating with Web Analytics 5. Integrating with Content Delivery Networks (CDNs) 6. Additional Services around RIA Construction
Media Formats: Video WMV1: Windows Media Video 7 WMV2: Windows Media Video 8 WMV3: Windows Media Video 9 WMVA: Windows Media Video Advanced Profile, non-VC-1 WMVC1: Windows Media Video Advanced Profile, VC-1 + Multiple Bit Rate (MBR)
Media Formats: Audio WMA 7: Windows Media Audio 7 WMA 8: Windows Media Audio 8 WMA 9: Windows Media Audio 9 MP3: ISO/MPEG Layer-3 see Silverlight SDK for additional detail
Media Formats: Encoding Use Expression Encoder Has command-line interface so it can be scripted as part of a media workflow Encode from .3g2 .mod .3gp .mov .asf .mp4 .avi .mpeg .dv .mpg .dvr-ms .ts .m2v .vob .m4v .wmv .aiff .m4A m4B bwf mp3 wav wma Use Windows Media Encoder Use any other encoder that creates supported formats
Streaming vs. Progressive Download Progressive Download Put a media file on any server vanilla hosting Can only view content that s been download so far Cannot monitor consumption from server Streaming On demand/live media Can monitor consumption from server Windows Media Server IIS Add-on Random-access: Can fast forward/move around content immediately
MIME Types You must at the MIME type for XAML to the website configuration to support Silverlight .XAML = application/xaml+xml
Integrating with Web Analytics Measuring the performance of your website with respect to business goals. Most web analytics services use JavaScript page tags JavaScript page tags can be triggered by Silverlight events Scenarios: Track user interaction behavior Track media drop-off with progressive download
Web Analytics: User Interaction Analytics can be introduced at any stage of the web development process With compiled RIA formats, analytics must be introduced before design is created. Add Event handlers that then call page tags
Web Analytics: Media Drop-Off Use invisible media markers every 5 seconds inserted in media when it is initially loaded. Media markers trigger JavaScript events JavaScript events call page tags
Web Analytics: A/B Testing Design in XAML is separated from the code in JavaScript Very easy to try different XAML in controlled tests Upcoming webinar on Silverlight + Web Analytics Tuesday, Oct 16 2007, 11:00 AM PST Detail on my blog: http://blogs.msdn.com/synergist
Integrating with CDNs What should be on CDNs? Images Video Audio What shouldn t be on CDNs? XAML Cross-domain access security issues Microsoft is working on a solution
Additional Services around Silverlight RIA Design & Development using Expression Blend Media Encoding using Expression Encoder Media Storage
Resources Silverlight Community: http://silverlight.net My Blog: http://blogs.msdn.com/synergist Thank You! Michael S. Scherotter mischero@microsoft.com
