With Silverlight and video on demand there is a delay of about 15 seconds when you jump back within the video.
When using Windows Media player it is working without any issues.
A url which exhibits this issue is the following one:
On a slow internet link without a proxy you will see the same problem. With a fast internet link the problem is not there.Here are a few observations observed when comparing a packet trace for a direct connection and one when going through a proxy.
direct connection capture : the client is setting accelbw to a maximum value for 20sec duration and server responds with 3.5Mbps for 20sec duration
Client going via a proxy : 1Mbps accelbw for 10sec duration.
Setting bypass_cache(yes) and setting max-fast-bandwidth on the blue coat to 3500kbps improves the performance to a certain degree. One option is to modify the Silverlight plugin configuration and somehow force it to use a ‘connection-speed’ higher than 1Mbps. On WM player, this is usually at Tools->Options->Performance->Connection speed->choose your connection speed.There does not appear to be a way to modify this on the silverlight plugin. It's quite likely the silverlight plugin uses packet-pair bandwidth estimation. The SG does not support this since we only support 1.0 version of WM-HTTP protocol, and the plugin uses 1.1 version to server.
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