Using the VMR for DirectShow Filter Developers

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

This topic contains the following sections:

• Requirements for Decoders
• Stream Control
• Coordinate Mapping in the VMR
• MPEG Decoder Preprocessing Transformations
• Access to DirectDraw Surfaces
• VMR Support for DirectX Video Acceleration
• Working with Direct3D Render Targets
• Per-Pixel Alpha Blending