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

Applies to: Windows 7 EnterpriseWindows 7 Home BasicWindows 7 Home Premium More

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: Note 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.
    VersionProductSR_LevelService branch
    11.0.600
    2.
    22xxx
    Windows Vista SP2LDR
  • 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 nameFile versionFile sizeDateTimePlatform
Mf.dll11.0.6002.225222,873,85610-Nov-201017:11x86
Mferror.dll11.0.6002.225222,04810-Nov-201015:26x86
Mfpmp.exe11.0.6002.2252224,57610-Nov-201015:27x86
Mfps.dll11.0.6002.2252298,81610-Nov-201017:10x86
Rrinstaller.exe11.0.6002.2252253,24810-Nov-201015:26x86
For all supported x64-based versions of Windows Vista
File nameFile versionFile sizeDateTimePlatform
Mf.dll11.0.6002.225223,549,69610-Nov-201017:40x64
Mferror.dll11.0.6002.225222,04810-Nov-201016:03x64
Mfpmp.exe11.0.6002.2252234,30410-Nov-201016:03x64
Mfps.dll11.0.6002.22522195,07210-Nov-201017:39x64
Rrinstaller.exe11.0.6002.2252260,41610-Nov-201016:02x64
Mf.dll11.0.6002.225222,873,85610-Nov-201017:11x86
Mferror.dll11.0.6002.225222,04810-Nov-201015:26x86
Mfpmp.exe11.0.6002.2252224,57610-Nov-201015:27x86
Mfps.dll11.0.6002.2252298,81610-Nov-201017:10x86
Rrinstaller.exe11.0.6002.2252253,24810-Nov-201015:26x86
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 nameFile versionFile sizeDateTimePlatform
Mf.dll12.0.7600.207963,182,08009-Sep-201004:27x86
For all supported x64-based versions of Windows 7
File nameFile versionFile sizeDateTimePlatform
Mf.dll12.0.7600.207964,068,86409-Sep-201005:29x64
Mfps.dll12.0.7600.20796206,84809-Sep-201005:29x64
Mf.dll12.0.7600.207963,182,08009-Sep-201004:27x86

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 nameUpdate.mum
File versionNot Applicable
File size2,373
Date (UTC)11-Nov-2010
Time (UTC)07:32
PlatformNot Applicable
File nameX86_77c4c05e6823b7e7f0d21e2e23a164f8_31bf3856ad364e35_6.0.6002.22522_none_ed99f3e0634b9ea0.manifest
File versionNot Applicable
File size703
Date (UTC)11-Nov-2010
Time (UTC)07:32
PlatformNot Applicable
File nameX86_microsoft-windows-mediafoundation_31bf3856ad364e35_6.0.6002.22522_none_9ebbabf52313f612.manifest
File versionNot Applicable
File size105,454
Date (UTC)10-Nov-2010
Time (UTC)17:28
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows Vista
File nameAmd64_589ae0a49c7c3403a32ba87f09e95450_31bf3856ad364e35_6.0.6002.22522_none_c2c6ca3a1ccf217a.manifest
File versionNot Applicable
File size1,054
Date (UTC)11-Nov-2010
Time (UTC)07:32
PlatformNot Applicable
File nameAmd64_microsoft-windows-mediafoundation_31bf3856ad364e35_6.0.6002.22522_none_fada4778db716748.manifest
File versionNot Applicable
File size105,810
Date (UTC)10-Nov-2010
Time (UTC)18:08
PlatformNot Applicable
File nameUpdate.mum
File versionNot Applicable
File size2,391
Date (UTC)11-Nov-2010
Time (UTC)07:32
PlatformNot Applicable
File nameX86_microsoft-windows-mediafoundation_31bf3856ad364e35_6.0.6002.22522_none_9ebbabf52313f612.manifest
File versionNot Applicable
File size105,454
Date (UTC)10-Nov-2010
Time (UTC)17:28
PlatformNot Applicable

Additional file information for Windows 7

Additional files for all supported x86-based versions of Windows 7
File nameX86_73fc38a36d4f23900812bc47ab18bf12_31bf3856ad364e35_6.1.7600.20796_none_65f74040c92bdef1.manifest
File versionNot Applicable
File size703
Date (UTC)09-Sep-2010
Time (UTC)17:15
PlatformNot Applicable
File nameX86_microsoft-windows-mediafoundation_31bf3856ad364e35_6.1.7600.20796_none_9cb5583a873a0c7b.manifest
File versionNot Applicable
File size265,911
Date (UTC)09-Sep-2010
Time (UTC)17:19
PlatformNot Applicable
Additional files for all supported x64-based versions of Windows 7
File nameAmd64_f39db663ef2491adcf4eac8f11951c14_31bf3856ad364e35_6.1.7600.20796_none_02a444ff50f9fc6f.manifest
File versionNot Applicable
File size1,056
Date (UTC)09-Sep-2010
Time (UTC)17:15
PlatformNot Applicable
File nameAmd64_microsoft-windows-mediafoundation_31bf3856ad364e35_6.1.7600.20796_none_f8d3f3be3f977db1.manifest
File versionNot Applicable
File size265,915
Date (UTC)09-Sep-2010
Time (UTC)17:15
PlatformNot Applicable
File nameWow64_microsoft-windows-mediafoundation_31bf3856ad364e35_6.1.7600.20796_none_03289e1073f83fac.manifest
File versionNot Applicable
File size162,389
Date (UTC)09-Sep-2010
Time (UTC)17:15
PlatformNot Applicable