You experience poor video quality in Communicator 2005 running through a multipoint control unit

You experience poor video quality when you join or start a video conversation in Microsoft Office Communicator 2005 running through a multipoint control unit (MCU).

This problem occurs if you use the Microsoft RTVideo video codec for the video conversation.

Communicator 2005 supports the following video codecs:

• Microsoft RTVideo
• ITU Telecommunication Standardization Sector (ITU-T) H.263

Although the RTVideo video codec has superior quality when compared with the H.263 video codec, some MCU products do not support the RTVideo video codec. Therefore, you experience poor video quality in the Communicator 2005 video conversation.

How to obtain the hotfix

This 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:

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