Due to popular demand we have just released an update to Silverlight Streaming that allows you to bypass the transcoding service when uploading a VC-1 compliant video without using the workaround described in my previous blog post about this matter.
When you go to the "Manage Videos" page on the Silverlight Streaming admin web site you will now see a checkbox below the video file name text box. Simply check it if you wish to bypass the transcoding service and upload your video to Silverlight Streaming "as is". This would apply to all WMV files encoded using Expression Encoder for example.
Remember, you should make sure you run your video through the transcoding service -and leave the checkbox unchecked- for videos that are not VC-1 compliant and Silverlight-ready. This would be the case for any non-WMV files and some WMV files. When in doubt, leave the checkbox unchecked.
Note that there is a glitch (we'll fix it shortly) that clears the video file name when refreshing the upload control after your check the checkbox, so check it before you actually browse to the video file you wish to upload to Silverlight Streaming, so you don't have to go look for it a second time.