Posted by: tranquilpc | April 28, 2011

Video Transcoding in WHS2011

One of the exciting benefits of WHS2011 is the internet streaming of media, or the delivery of media files to regular DLNA players (ie TVs) in the home.

Music and pictures can be delivered without any issues, but video (ie your Recorded TV files) demands a little more CPU power.

Watching your Recorded TV programs whilst away from home via any browser seems an exciting prospect (subject to your internet upload speed). But read on for further information regarding CPU demands.

Video Transcoding

For the technical minded – to stream video (lowest quality demand CPU with a score of 3, and to stream highest quality the CPU should score 6. Atom CPU scores around 3 and the i3-2100T scores around 6.

For further information on Windows demand for video streaming – please visit

Or read on….

To stream media from your home server you can use a computer that is running the Windows 7 operating system, or other home-networked devices such as digital media players, and Media Center Extenders such as XBOX 360. When you are away from home, use Remote Web Access Media Player to play files that are stored on the home server.

You also need relatively fast up-link speeds that vary from 200Kbps to 10 Mbps or more and media formats that your computer and devices can recognize and play. Not all devices, however, support the same video formats so there must be a way for your computer and devices to play whatever media files you happen to have. Windows Home Server 2011 contains a new transcoding support (inherited from Windows 7) that determines the capability of the computer or device you are using and then dynamically converts an unsupported video file into a supported one. In general, if Windows Media Player 12 can play the content on a computer that is running Windows 7, then the content on the home server will usually play on the network-connected device.

The format and bit rate chosen for transcoding is highly dependent on the performance of the home server processor. The processor performance is identified as part of the Windows Experience Index. To determine the performance score of your home serve, do one of the following:

  • On a computer running Windows 7 that has the same processor as your home server, go to the Control Panel, click Performance Information and Tools, and review the information given on the Rate and improve your computer’s performance page.
  • Contact the manufacturer of the processor.

For the best user experience, choose a video streaming resolution quality that is appropriate for your home server processor. The server will automatically adjust the bit rate to one of these settings:

  • Low if the processor score is less than 3.6.
  • Medium if the processor score is greater than 3.6 and less than 4.2.
  • High if the processor score is greater than 4.2 and less than 6.0.
  • Best if the processor score is greater than 6.0.

If you choose a video streaming resolution that requires more processing power than your server has, you may experience buffers and stops while streaming media from the home server.


To stream high definition video through Remote Access, you need a processor with a score of at least 6.0.


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