Hello Martin Herrman,
Thank you for the details. Silverlight MediaElement actually doesn't support "real" streaming even when using with mms (it'll fallback to http) - more on this here
, this means that when seeking you have to wait for http downloading the video and etc. Windows Media Player won't fallback and this way you'll have real streaming. If you need real streaming you can think of using Smooth Streaming media
, which is supported by RadMediaPlayer.
If you have further questions please contact us.
the Telerik team
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