This article describes a situation in which an MP4 file cannot be played correctly on a device that is not running a Windows-based system. We have released updates and hotfixes that have prerequisites to resolve this issue in Windows 7 or Windows Server 2008 R2.
This issue occurs if the MP4 file is longer than 429 seconds. Additionally, you may encounter a situation in which the MP4 file stops unexpectedly after it has played for some time (such as 25 seconds).
This issue occurs because of an overflow in the movie box atoms generator.
How to obtain this update or hotfix
Method 1: Windows UpdateThis update is available from Windows Update.
Method 2: Microsoft Download CenterThe following files are available for download from the Microsoft Download Center.
|All supported x86-based versions of Windows 7||Download the package now.|
|All supported x64-based versions of Windows 7||Download the package now.|
|All supported x64-based versions of Windows Server 2008 R2||Download the package now.|
For more 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 servicesMicrosoft 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 prevent any unauthorized changes to the file.
Method 3: Hotfix packageA 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: 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.
Update or hotfix information
PrerequisitesTo install this update or hotfix, you must first install Service Pack 1 for Windows 7 or Windows Server 2008 R2.
Registry informationTo apply this update or hotfix, you do not have to make any changes to the registry.
Restart requirementYou may have to restart the computer after you apply this update or hotfix.
Update replacement informationThis update or hotfix does not replace a previously released update.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.