This article describes an issue that occurs if a file is created by MPEG-4 file sink in Windows 8.1, Windows RT 8.1, or Windows Server 2012 R2. An update rollup and a hotfix are available to resolve this issue. The hotfix has a prerequisite.

Symptoms

This issue occurs when a file has a video track that is longer than the audio track. When the file plays back in a standard-compliant player, the time slider may display incorrectly. Therefore, a user cannot seek the part of the timeline that is not displayed.

Resolution

To resolve this issue,we have released an update rollup and a hotfix for Windows 8.1 or Windows Server 2012 R2.

Note The update rollup and the hotfix only resolve this issue for newly created files.

The update rollup fixes many other issues in addition to the issue that the hotfix fixes. We recommend that you use the update rollup. The update rollup is larger than the hotfix. Therefore, the update rollup takes longer to download.

Get the update rollup for Windows 8.1 or Windows Server 2012 R2To resolve this issue, install the update rollup that is dated December 2014.

Get the December 2014 update rollup for Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2

Get the hotfix for Windows 8.1 or Windows Server 2012 R2 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 this specific problem.

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, submit a request to 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 website:

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.

PrerequisitesTo apply this update, you must have update 2919355 installed in Windows 8.1 or Windows Server 2012 R2.

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

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

Hotfix replacement informationThis hotfix does not replace a previously released hotfix.

More Information

The global 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 8.1 and Windows Server 2012 R2 file information and notes

Important Windows 8.1 hotfixes and Windows Server 2012 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 8.1/Windows Server 2012 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" section. MUM, MANIFEST, and the associated security catalog (.cat) files, are very 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 8.1

File name

File version

File size

Date

Time

Platform

Mfmp4srcsnk.dll

12.0.9600.17483

786,120

07-Nov-2014

03:20

x86

For all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File name

File version

File size

Date

Time

Platform

Mfmp4srcsnk.dll

12.0.9600.17483

952,896

07-Nov-2014

03:58

x64

For Windows RT 8.1

File name

File version

File size

Date

Time

Platform

Mfmp4srcsnk.dll

12.0.9600.17483

660,136

07-Nov-2014

02:23

Not applicable

Additional file information

Additional file information for Windows 8.1 and for Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1

File property

Value

File name

X86_84bf58e6d990a7a615a072b173d8814c_31bf3856ad364e35_6.3.9600.17483_none_bcf6f248c5eda6c4.manifest

File version

Not applicable

File size

699

Date (UTC)

07-Nov-2014

Time (UTC)

18:35

Platform

Not applicable

File name

X86_microsoft-windows-mfmp4srcsnk_31bf3856ad364e35_6.3.9600.17483_none_9b4ea65ac9aff579.manifest

File version

Not applicable

File size

63,224

Date (UTC)

07-Nov-2014

Time (UTC)

03:28

Platform

Not applicable

Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2

File property

Value

File name

Amd64_7025d8bb7b0dfd797bbc1430dc826ab0_31bf3856ad364e35_6.3.9600.17483_none_7c3b8a8b41bb445d.manifest

File version

Not applicable

File size

1,048

Date (UTC)

07-Nov-2014

Time (UTC)

18:42

Platform

Not applicable

File name

Amd64_microsoft-windows-mfmp4srcsnk_31bf3856ad364e35_6.3.9600.17483_none_f76d41de820d66af.manifest

File version

Not applicable

File size

63,228

Date (UTC)

07-Nov-2014

Time (UTC)

04:17

Platform

Not applicable

File name

Wow64_microsoft-windows-mfmp4srcsnk_31bf3856ad364e35_6.3.9600.17483_none_01c1ec30b66e28aa.manifest

File version

Not applicable

File size

22,716

Date (UTC)

07-Nov-2014

Time (UTC)

03:28

Platform

Not applicable

Additional files for Windows RT 8.1

File property

Value

File name

Arm_f37017f3707fbd744c818b87e26c06dd_31bf3856ad364e35_6.3.9600.17483_none_8705ca84fe2ec191.manifest

File version

Not applicable

File size

699

Date (UTC)

07-Nov-2014

Time (UTC)

18:37

Platform

Not applicable

File name

Arm_microsoft-windows-mfmp4srcsnk_31bf3856ad364e35_6.3.9600.17483_none_9b5118b2c9ad143f.manifest

File version

Not applicable

File size

63,224

Date (UTC)

07-Nov-2014

Time (UTC)

02:30

Platform

Not applicable


Status

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

References

See the terminology that Microsoft uses to describe software updates.

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