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Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. This topic is intended for developers. To write a DVD decoder minidriver, the minidriver must include the ksmedia.
The minidriver must also link to the stream. For more information, see Streaming Minidrivers. This filter reads the DVD stream directly from a DVD disc and produces individual media type outputs, such as audio, video, and subpicture. The filter responds to commands in the stream and handles all user input. It creates that is, instantiates a device object for each data type to be decoded in hardware, such as audio and video data types.
This filter supports plug-ins that allow expansion for new interfaces. These filters enable playback of video using hardware video ports, and provide support for blending low-bandwidth video streams, such as the closed caption decoder output stream.
Dedicated buses transfer decoded video streams from an MPEG-2 decoder to the display card. Microsoft provides software support for these interfaces by using the DirectDraw hardware abstraction layer HAL with video port extensions VPE to pass video that was decoded in hardware to the video graphics array VGA. Copyright protection for DVD is provided by encrypting sectors on a disc and then decrypting those sectors before decoding them.
The key exchange sequence is implemented through properties sent to the DVD decoder minidriver's input pins. Hardware-based DVD Decoding. Software-based DVD Decoding. Skip to main content. This browser is no longer supported. Table of contents Exit focus mode. Table of contents. Note This topic is intended for developers. Submit and view feedback for This product This page. View all page feedback. Additional resources In this article.
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