FIX: Windows Media Player 9 Series Does Not Play G.711 Content (814127)


The information in this article applies to:

  • Microsoft Windows Media Player 9 Series for Windows 2000
  • 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 XP
  • Microsoft Windows Media Format 9 Series SDK

SYMPTOMS

Windows Media Player 9 Series does not play back content that uses the G.711 audio format. The core components that the Windows Media Format SDK provides and that are used in the Windows Media Player cannot handle G.711 decoding.

CAUSE

This occurs because the underlying format assumes that all audio decoders can decode to both 8-bit and 16-bit PCM audio. The G.711 codec that is included with the operating system can only decode to 16-bit PCM audio and causes an error when it tries to decode back to 8-bit audio. At this point, an error is generated on the client.

RESOLUTION

A supported fix is now available from Microsoft, but it is only intended to correct the problem described in this article. Only apply it to systems that are experiencing this specific problem. This fix may receive additional testing to further ensure product quality. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The English version of this fix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel. 
   Date         Time   Version            Size    File name
   --------------------------------------------------------------
   04-Feb-2003  20:43  9.0.0.3000      2,058,888  Wmvcore.dll
The following files are available for download from the Microsoft Download Center:
DownloadDownload the wm814127.exe package now.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
Modification Type:MinorLast Reviewed:10/6/2005
Keywords:kbdownload kbfix kbBug kbQFE KB814127 kbAudDeveloper kbAudEndUser kbAudOEM
©2004 Microsoft Corporation. All rights reserved.