The aspect ratio of an ASF file is lost when you try to select a different audio stream for the file in Windows Media Player in Windows 7 or in Windows Vista

Symptoms

In Windows 7 or in Windows Vista, you use Windows Media Player to open an ASF media file that has one video stream and two or more mutually exclusive audio streams. However, if you select a different audio stream during the ASF file playback, the aspect ratio of the file is lost unexpectedly.

Note ASF files typically have .wma or .wmv extensions.

Cause

This issue occurs because ASF files do not reset the media type tracker when the file is reused after playback.

Resolution

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=supportNote The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

To apply this hotfix, you must be running Windows 7 or Windows Vista Service Pack 2 (SP2).
For more information about how to obtain a Windows Vista service pack, click the following article number to view the article in the Microsoft Knowledge Base:

935791 How to obtain the latest Windows Vista service pack

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows Vista file information notes

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    11.0.600
    2.
    22xxx

    Windows Vista

    SP2

    LDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Vista" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Vista

File name

File version

File size

Date

Time

Platform

Mf.dll

11.0.6002.22522

2,873,856

10-Nov-2010

17:11

x86

Mferror.dll

11.0.6002.22522

2,048

10-Nov-2010

15:26

x86

Mfpmp.exe

11.0.6002.22522

24,576

10-Nov-2010

15:27

x86

Mfps.dll

11.0.6002.22522

98,816

10-Nov-2010

17:10

x86

Rrinstaller.exe

11.0.6002.22522

53,248

10-Nov-2010

15:26

x86

For all supported x64-based versions of Windows Vista

File name

File version

File size

Date

Time

Platform

Mf.dll

11.0.6002.22522

3,549,696

10-Nov-2010

17:40

x64

Mferror.dll

11.0.6002.22522

2,048

10-Nov-2010

16:03

x64

Mfpmp.exe

11.0.6002.22522

34,304

10-Nov-2010

16:03

x64

Mfps.dll

11.0.6002.22522

195,072

10-Nov-2010

17:39

x64

Rrinstaller.exe

11.0.6002.22522

60,416

10-Nov-2010

16:02

x64

Mf.dll

11.0.6002.22522

2,873,856

10-Nov-2010

17:11

x86

Mferror.dll

11.0.6002.22522

2,048

10-Nov-2010

15:26

x86

Mfpmp.exe

11.0.6002.22522

24,576

10-Nov-2010

15:27

x86

Mfps.dll

11.0.6002.22522

98,816

10-Nov-2010

17:10

x86

Rrinstaller.exe

11.0.6002.22522

53,248

10-Nov-2010

15:26

x86

Windows 7 file information notes

Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Mf.dll

12.0.7600.20796

3,182,080

09-Sep-2010

04:27

x86

For all supported x64-based versions of Windows 7

File name

File version

File size

Date

Time

Platform

Mf.dll

12.0.7600.20796

4,068,864

09-Sep-2010

05:29

x64

Mfps.dll

12.0.7600.20796

206,848

09-Sep-2010

05:29

x64

Mf.dll

12.0.7600.20796

3,182,080

09-Sep-2010

04:27

x86

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

To select a different audio stream during playback in Windows Media Player, click Play, click Audio and Language Tracks, and then select the language that you want to play.

For more information about the aspect ratio, visit the following Microsoft Developer Network (MSDN) website:

Information about the aspect ratio, output resolution, and scaling
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional file information

Additional file information for Windows Vista

Additional files for all supported x86-based versions of Windows Vista

File name

Update.mum

File version

Not Applicable

File size

2,373

Date (UTC)

11-Nov-2010

Time (UTC)

07:32

Platform

Not Applicable

File name

X86_77c4c05e6823b7e7f0d21e2e23a164f8_31bf3856ad364e35_6.0.6002.22522_none_ed99f3e0634b9ea0.manifest

File version

Not Applicable

File size

703

Date (UTC)

11-Nov-2010

Time (UTC)

07:32

Platform

Not Applicable

File name

X86_microsoft-windows-mediafoundation_31bf3856ad364e35_6.0.6002.22522_none_9ebbabf52313f612.manifest

File version

Not Applicable

File size

105,454

Date (UTC)

10-Nov-2010

Time (UTC)

17:28

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows Vista

File name

Amd64_589ae0a49c7c3403a32ba87f09e95450_31bf3856ad364e35_6.0.6002.22522_none_c2c6ca3a1ccf217a.manifest

File version

Not Applicable

File size

1,054

Date (UTC)

11-Nov-2010

Time (UTC)

07:32

Platform

Not Applicable

File name

Amd64_microsoft-windows-mediafoundation_31bf3856ad364e35_6.0.6002.22522_none_fada4778db716748.manifest

File version

Not Applicable

File size

105,810

Date (UTC)

10-Nov-2010

Time (UTC)

18:08

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

2,391

Date (UTC)

11-Nov-2010

Time (UTC)

07:32

Platform

Not Applicable

File name

X86_microsoft-windows-mediafoundation_31bf3856ad364e35_6.0.6002.22522_none_9ebbabf52313f612.manifest

File version

Not Applicable

File size

105,454

Date (UTC)

10-Nov-2010

Time (UTC)

17:28

Platform

Not Applicable

Additional file information for Windows 7

Additional files for all supported x86-based versions of Windows 7

File name

X86_73fc38a36d4f23900812bc47ab18bf12_31bf3856ad364e35_6.1.7600.20796_none_65f74040c92bdef1.manifest

File version

Not Applicable

File size

703

Date (UTC)

09-Sep-2010

Time (UTC)

17:15

Platform

Not Applicable

File name

X86_microsoft-windows-mediafoundation_31bf3856ad364e35_6.1.7600.20796_none_9cb5583a873a0c7b.manifest

File version

Not Applicable

File size

265,911

Date (UTC)

09-Sep-2010

Time (UTC)

17:19

Platform

Not Applicable

Additional files for all supported x64-based versions of Windows 7

File name

Amd64_f39db663ef2491adcf4eac8f11951c14_31bf3856ad364e35_6.1.7600.20796_none_02a444ff50f9fc6f.manifest

File version

Not Applicable

File size

1,056

Date (UTC)

09-Sep-2010

Time (UTC)

17:15

Platform

Not Applicable

File name

Amd64_microsoft-windows-mediafoundation_31bf3856ad364e35_6.1.7600.20796_none_f8d3f3be3f977db1.manifest

File version

Not Applicable

File size

265,915

Date (UTC)

09-Sep-2010

Time (UTC)

17:15

Platform

Not Applicable

File name

Wow64_microsoft-windows-mediafoundation_31bf3856ad364e35_6.1.7600.20796_none_03289e1073f83fac.manifest

File version

Not Applicable

File size

162,389

Date (UTC)

09-Sep-2010

Time (UTC)

17:15

Platform

Not Applicable

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