Microsoft KB Archive/831937

= FIX: Loss of audio or audio dropouts occur when you export DVCPRO 25 content by using an IEEE 1394 bus =

Article ID: 831937

Article Last Modified on 10/5/2005

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APPLIES TO


 * Microsoft DirectX 9.1 Software Development Kit Update

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SYMPTOMS
When you try to export content, you may experience loss of audio or dropouts in the audio when the following conditions are true:
 * The content was created by using a Panasonic DVCPRO 25 product.
 * You try to export by using an Institute of Electrical and Electronics Engineers (IEEE) 1394 connector.
 * You try to export to a digital video (DV) capture device.

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



CAUSE
This problem occurs because some third-party encoders do not preserve the value of the SPEED field in the audio auxiliary (AAUX) source pack as 1.0.



RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next release that contains this hotfix.

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

http://support.microsoft.com/contactus/?ws=support

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 following file is available for download from the Microsoft Download Center:

Download the DirectX9-KB831937-x86-ENU.exe package now.

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.

The English version of this hotfix 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 --  13-Feb-2004  12:47  6.5.1.903         311,808  Qdv.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Additional query words: &quot;DVC Pro&quot; &quot;pro25&quot; qdv DirectShow filter

Keywords: kbbug kbfix kbqfe KB831937

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