Additional query strings for Windows Media Player (315959)



The information in this article applies to:

  • Microsoft Windows Media Player 6.4
  • Microsoft Windows Media Player 7
  • Microsoft Windows Media Player 7.1
  • Microsoft Windows Media Player for Windows XP Home Edition
  • Microsoft Windows Media Player for Windows XP Professional
  • Microsoft Windows Media Player 9 Series for Windows 98 Second Edition
  • Microsoft Windows Media Player 9 Series for Windows Millennium Edition
  • Microsoft Windows Media Player 9 Series for Windows 2000
  • Microsoft Windows Media Player 9 Series for Windows XP

This article was previously published under Q315959

SUMMARY

There are certain switches that you can use with Windows Media Player to assist you in troubleshooting issues. These switches are added in the form of a query string to the end of a requested URL.
  • WMThinning: Enables or disables Windows Media Player to automatically thin if network conditions dictate.

    Values: 0 (Disable) or 1 (Enable)
  • WMBitrate: Sets the maximum connection speed (BPS) that Windows Media Player can use.

    Values: Positive DWORD value
  • WMContentBitrate: Explicitly sets the bit rate of the content to be received (BPS).

    Values: Positive DWORD value
  • WMReconnect: Sets the number of times that Windows Media Player will try to automatically reconnect to content.

    Values: Positive integer
  • WMCache: Enables or disables Windows Media Player client caching and progressive streaming.

    Values: 0 (Disable) or 1 (Enable)
  • WMFecSpan: Sets the Forward Error Correction (FEC) span.

    Values: Positive DWORD value
  • WMFecPktsPerSpan: Sets the number of packets in a FEC span.

    Values: Positive DWORD value

MORE INFORMATION

Examples

To disable Windows Media Player thinning:
   mms://server/content.wmv?WMThinning=0
				
To specify that Windows Media Player has a 50 Kbps connection speed, and that it is trying to get a 100 Kbps stream from the content:
   mms://server/content.wmv?WMBitrate=50000&WMContentBitrate=100000
				

Supported Versions

The following table lists the supported Windows Media Player versions for the various switches:

Windows Media Player 6.4Windows Media Player 7.xWindows Media Player XPWindows Media Player 9 Series
WMThinning     X     X     X      X
WMBitrate     X     X     X      X
WMContentBitrate     X     X     X      X
WMReconnect                  X
WMCache                  X
WMFecSpan                  X
WMFecPktsPerSpan                     X

Modification Type:MajorLast Reviewed:8/4/2005
Keywords:kbDSWMM2003Swept kbinfo KB315959