Using the Video Mixing Renderer

This topic applies to Windows XP Home Edition and Windows XP Professional only.

The Video Mixing Renderer (VMR) is a new DirectShow filter, available exclusively on Windows® XP Home Edition and Windows XP Professional, that replaces both the Overlay Mixer and Video Renderer, and adds many new mixing features. In terms of both performance and breadth of features, the VMR represents the next generation in video rendering on the Windows platform.

Also, the new Video Port Manager filter replaces the VBI Surface Allocator when the VMR is in the filter graph. The Line 21 Decoder 2 and WST Decoder 2 filters are used with the VMR.

This article contains the following sections:

• New Features of the VMR
• VMR vs. Previous DirectShow Renderers
• VMR System Requirements
• VMR Filter Components
• VMR Modes of Operation
• Configuring the VMR
• Building a Filter Graph with the VMR
• Using the VMR for DirectShow Filter Developers
• Supplying a Custom Allocator-Presenter
• Positioning and Moving Video Rectangles in Composition Space