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This topic applies to Windows Media Player version 6.4 only.
The Windows Media Player control is designed to be a universal player for all types of multimedia data. It works equally well rendering content served by Windows Media Services and Microsoft® DirectShow® local playback media types. The Windows Media Player control incorporates many of the attributes supported by the earlier Microsoft® NetShow™ Player version 2.0 control and by the Microsoft® ActiveMovie™ control, along with new methods, properties, and events. In addition, the Windows Media Player control can operate in one of the following three modes to provide compatibility with the NetShow Player version 2.0 and ActiveMovie controls.
All three modes provide the enhanced streaming and playback capabilities of Windows Media Player; however, each mode supports its own set of attributes.
The class identifier (CLSID) used to create an instance of the control determines the mode of operation. Using one of the CLSIDs previously reserved for NetShow Player control or the ActiveMovie control creates an instance of the Windows Media Player control in that alternate mode. As a result, applications and Web pages created with these controls can use the improved performance of Windows Media Player with little or no change to their code. In many cases, you can update a Web page simply by changing the CODEBASE attribute to specify the cabinet (.cab) file containing the Windows Media Player control.
Important Installing the NetShow Player version 2.0 control or the ActiveMovie control on your development platform after installing the Windows Media Player control causes unexpected results.
This article contains the following sections.
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