Article ID: 915571 - Last Review: December 13, 2006 - Revision: 1.3 You cannot use Communicator 2005 to participate in a video conversation with Communicator 2007Beta InformationThis article discusses a Beta release of a Microsoft product. The information in this article is provided as-is and is subject to change without notice.No formal product support is available from Microsoft for this Beta product. For information about how to obtain support for a Beta release, see the documentation that is included with the Beta product files, or check the Web location where you downloaded the release. On This PageSYMPTOMSWhen you try to use Microsoft Office Communicator 2005 to participate in a video conversation with someone who uses Microsoft Office Communicator 2007, you are unsuccessful. CAUSEThis problem occurs because the real-time video codec that Communicator 2005 uses is incompatible with the real-time video codec that Communicator 2007 uses. Communicator 2005 uses the Msrtv video codec. This codec is a proprietary codec. Communicator 2007 uses the standard Rtvc1 video codec. RESOLUTIONHow to obtain the hotfixThis issue is fixed in the Communicator 2005 Hotfix Package that is dated July 18, 2006. For more information, click the following article number to view the article in the Microsoft Knowledge Base:921348
(http://support.microsoft.com/kb/921348/
)
Description of the Communicator 2005 hotfix package: July 18, 2006 This hotfix package adds support for the Rtvc1 codec to Communicator 2005. Therefore, after you apply this hotfix, you can use Communicator 2005 to participate in a video conversation with someone who uses Communicator 2007.STATUSMicrosoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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