Access Violation After MWP 6.4 Buffers 100 Percent of an ASF File Encoded as MPEG4 (324178)


The information in this article applies to:

  • Microsoft Windows Media Player 6.4
This article was previously published under Q324178

SYMPTOMS

An access violation may occur in Mpg4ds32.ax immediately after the Windows Media Player 6.4 buffers 100 percent of an Advanced Streaming Format (ASF) file. This problem only occurs if the video is encoded as MPEG4.

CAUSE

This problem occurs when the DirectShow filter renders planar YUV and incorrectly follows a non-planar code path that contains function pointers that have not been initialized.

RESOLUTION

A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.

To resolve this problem immediately, download the fix by clicking the download link later in this article or 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
   --------------------------------------------------
   07-Jun-2002  14:30                    509  Control.xml
   23-May-2002  15:46                 11,175  Eula.txt
   03-Jun-2002  15:19  7.10.0.3069   258,048  Mpg4ds32.ax
   01-May-2001  10:08  7.1.0.3055    274,432  Setup_wm.exe
   07-Jun-2002  10:38                  1,927  Wmqfe.inf
The following file is available for download from the Microsoft Download Center:

DownloadDownload Wm324178.exe now

Release Date: Jan-04-1999

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to Obtain Microsoft Support Files from Online Services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.

STATUS

Microsoft has confirmed that this is a problem in Windows Media Player 6.4.

MORE INFORMATION

This problem does not occur in Microsoft Windows XP.
Modification Type:MinorLast Reviewed:8/9/2004
Keywords:kbdownload kbbug kbfix kbQFE KB324178
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