Microsoft KB Archive/941827

= You may experience a decrease in performance in Windows Media Encoder 9 Series after you upgrade to Windows Media Player 11 =

Article ID: 941827

Article Last Modified on 10/1/2007

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APPLIES TO


 * Windows Media Encoder 9 Series

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SYMPTOMS
After you upgrade to Microsoft Windows Media Player 11, you may experience a decrease in performance in Microsoft Windows Media Encoder 9 Series.



CAUSE
This behavior occurs because the following improvements were made to Windows Media Player 11 to bring it into conformance with the VC-1 specification from the Society of Motion Picture and Television Engineers (SMPTE):
 * Windows Media Player 11 was made fully compliant with the following profiles in the VC-1 specification:
 * The Simple profile
 * The Main profile
 * The Advanced profile
 * Motion estimation was improved.
 * Support for multithreading by using up to four core processors was added.
 * Support for advanced codec optimization was added.

Therefore, Windows Media Encoder 9 Series may use more CPU resources than you expect in certain circumstances. For example, you may notice this behavior when you encode by using higher resolutions and by using higher bit rates.



WORKAROUND
To work around this behavior, follow these steps:
 * 1) In Windows Media Encoder 9 Series, click Options on the Tools menu.
 * 2) On the Performance tab, move the slider under Better performance closer to High, and then click OK.



STATUS
This behavior is by design.



MORE INFORMATION
The VC-1 specification is also known as SMPTE 421M.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

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