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Windows Media Photo encoder generates a lossless compressed image instead of a lossy compressed image as expected


View products that this article applies to.

Symptoms

You have a computer that is running Windows 7, Windows Vista, Windows Server 2008 R2, or Windows Server 2008. On this computer, you use Windows Media Photo encoder to generate a lossy compressed version of an image. In this scenario, the image is compressed under the lossless coding mode. Therefore, the size of the generated image file is much larger than expected.

Note This issue only affects the following image formats: 16 bits per pixel (bpp) integer grayscale, CMYK, or N-Channel.

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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, your computer must be running one of the following operating systems:
  • Windows Vista Service Pack 2 (SP2)
  • Windows Server 2008 Service Pack 2 (SP2)
  • Windows 7
  • Windows Server 2008 R2
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
For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
968849� How to obtain the latest service pack for Windows Server 2008

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 Vista and Windows Server 2008 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.
    Collapse this tableExpand this table
    VersionProductSR_LevelService branch
    6.0.600 2 . 22xxxWindows Vista and Windows Server 2008SP2LDR
  • 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 and 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 Server 2008 and of Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Wmphoto.dll7.0.6002.22351369,66422-Mar-201017:02x86
For all supported x64-based versions of Windows Server 2008 and of Windows Vista
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Wmphoto.dll7.0.6002.22351449,02422-Mar-201017:08x64
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 extremely 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
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Wmphoto.dll6.1.7600.20618318,46415-Jan-201020:06x86
For all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Wmphoto.dll6.1.7600.20618392,19215-Jan-201020:05x64
For all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Wmphoto.dll6.1.7600.20618792,57615-Jan-201009:40IA-64

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Status

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

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More information

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 and for Windows Server 2008

Additional files for all supported x86-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File nameX86_f1fb0b8a9d05bee47c3a08b9e7ff03cc_31bf3856ad364e35_7.0.6002.22369_none_a1673a700cc99c0c.manifest
File versionNot applicable
File size705
Date (UTC)23-Mar-2010
Time (UTC)01:08
PlatformNot applicable
File nameX86_microsoft-windows-photo-image-codec_31bf3856ad364e35_7.0.6002.22369_none_92e265bde711f1ae.manifest
File versionNot applicable
File size12,134
Date (UTC)22-Mar-2010
Time (UTC)19:07
PlatformNot applicable
Additional files for all supported x64-based versions of Windows Vista and of Windows Server 2008
Collapse this tableExpand this table
File nameAmd64_affb39699f0dbcfc5f6cadd9662ce9b5_31bf3856ad364e35_7.0.6002.22369_none_c046a262f84e713b.manifest
File versionNot applicable
File size1,058
Date (UTC)23-Mar-2010
Time (UTC)01:08
PlatformNot applicable
File nameAmd64_microsoft-windows-photo-image-codec_31bf3856ad364e35_7.0.6002.22369_none_ef0101419f6f62e4.manifest
File versionNot applicable
File size12,150
Date (UTC)22-Mar-2010
Time (UTC)18:50
PlatformNot applicable

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

Additional files for all supported x86-based versions of Windows 7
Collapse this tableExpand this table
File nameX86_3e1d05e2a9fa4361199df06ea2ffe08c_31bf3856ad364e35_6.1.7600.20618_none_c7dfb59be7d21511.manifest
File versionNot applicable
File size705
Date (UTC)15-Jan-2010
Time (UTC)23:14
PlatformNot applicable
File nameX86_microsoft-windows-photo-image-codec_31bf3856ad364e35_6.1.7600.20618_none_9fe85541bff48e70.manifest
File versionNot applicable
File size10,733
Date (UTC)15-Jan-2010
Time (UTC)20:51
PlatformNot applicable
Additional files for all supported x64-based versions of Windows 7 and of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_3bfde46578d461a15c956a733d79fa29_31bf3856ad364e35_6.1.7600.20618_none_b2f32d41162d4a67.manifest
File versionNot applicable
File size1,058
Date (UTC)15-Jan-2010
Time (UTC)23:14
PlatformNot applicable
File nameAmd64_microsoft-windows-photo-image-codec_31bf3856ad364e35_6.1.7600.20618_none_fc06f0c57851ffa6.manifest
File versionNot applicable
File size10,737
Date (UTC)15-Jan-2010
Time (UTC)10,737
PlatformNot applicable
Additional files for all supported IA-64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_2c5d229a1a72848e6aaf01145a29861b_31bf3856ad364e35_6.1.7600.20618_none_8c19d29f1acfa634.manifest
File versionNot applicable
File size1,056
Date (UTC)15-Jan-2010
Time (UTC)23:13
PlatformNot applicable
File nameIa64_microsoft-windows-photo-image-codec_31bf3856ad364e35_6.1.7600.20618_none_9fe9f937bff2976c.manifest
File versionNot applicable
File size10,735
Date (UTC)15-Jan-2010
Time (UTC)20:54
PlatformNot applicable

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Keywords: kbsurveynew, kbexpertiseadvanced, kbqfe, kbautohotfix, kbhotfixserver, kbfix, KB979532

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Article Info
Article ID : 979532
Revision : 3
Created on : 4/14/2010
Published on : 4/14/2010
Exists online : False
Views : 450