Streaming issues that are related to Microsoft Media Foundation in Windows 7

A hotfix is available for Microsoft Media Foundation in Windows 7. This hotfix resolves the following streaming issues that relate to Media Foundation:

Issue 1

You cannot stream some audio files to multiple devices at the same time. These audio files use Audio Compression Manager (ACM) codecs. If the ACM codecs are used for decoding the files, this issue affects the following audio formats: Adaptive Delta Pulse Code Modulation (ADPCM), Mu-law, and Microsoft GSM 6.10 Audio (GSM 610). If the ACM codecs are used for encoding, this issue affects MPEG-1 Audio Layer 3 (MP3).

Issue 2

You trigger an unrecoverable issue when you seek through a digital video in Audio Video Interleave (AVI) format. Therefore, you cannot use video editing.

Issue 3

When you use the Media Foundation (MF) source reader to seek by calling the SetCurrentPosition function, the function fails and you receive an E_INVALIDARG error message. This issue occurs after you perform a dynamic format change.

Issue 4

When you use the MF source reader to decode a video that has dynamic format changes, you encounter a corrupted frame issue or you receive an unrecoverable error. This issue occurs after you perform a dynamic format change.

Issue 5

You enable the Direct3D and the DirectX Video Acceleration (DXVA) decoder for decoding Windows Media Video (WMV) content. After you use the MF source reader to seek through a video, you notice that the frame output of the video from the decoder is incorrect.

Issue 6

You receive an incorrect media type for a stream when you use the MF source reader to obtain the media type. The incorrect media type is not selected for the stream output.

Cause of Issue 1

This issue occurs because the ACM wrapper only lets one instance of the codecs to be active at a time.

Cause of Issue 2

This issue occurs because Media Foundation only recognizes the first stream even though AVI contains multiple streams.

Cause of Issue 3

This issue occurs because the MF source reader sets an incorrect media type on the media source after you perform a dynamic format change.

Cause of Issue 4

This issue occurs because the MF source reader resets the video sample allocator at the wrong time after you perform a dynamic format change.

Cause of Issue 5

This issue occurs because of an error in the DXVA decoder for WMV content.

Cause of Issue 6

This issue occurs because of an error in the MF source reader.

Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only 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 software update that contains this hotfix.

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

Prerequisites

No prerequisites are required.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File 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 7 and Windows Server 2008 R2 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 Server 2008 R2 and for Windows 7" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are very important to maintaining the state of the updated component. 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

For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2

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

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

Additional file information

Additional file information for Windows 7 and for Windows Server 2008 R2

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

Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2