Adding Closed Captioning to video using Silverlight, ASP.NET AJAX, WCF and an external data source

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In my previous Silverlight Closed Captioning screencast here, I showed you how to use Expression Encoder to import Closed Captioning information to produce a solution without writing a line of code.  What if you store your Closed Captioning information in an external data source (database, SAMI file, XML file, etc.) and want to keep it there?  Do you have to reprocess all of your videos using Expression Encoder?  Of course not, but you do have to write some code:).  In this screencast, I show you how to use Silverlight, ASP.NET AJAX, and the Windows Communication Foundation (WCF)  to solve this problem. 

You can download the sample code via my blog at http://devkeydet.spaces.live.com/blog/cns!1F72DA7294089597!452.entry.

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