SilverLight is programming model which is used for developing and distributing rich Internet applications (RIA) that use graphics, animations or video in the .NET framework. By Microsoft a new plug in is developed for delivering videos files .The SilverLight plug-in is both cross-browser and cross-platform. SilverLight allows the of Al the multimedia distribution are allowed by SilverLight which is part of an application with supporting high definition (HD) video at 720p resolution. By using Microsoft's new Dynamic Language Runtime (DLR) SilverLight also supports Python, Ruby, and JavaScript in a .NET environment, including the upcoming dynamic version of Visual Basic, VBx. Both the Python and Ruby. Microsoft's decision to new platform.