Video auto-processing in Windows 8

S’applique à : Windows 8Windows 8 ProWindows RT

Summary


The DX11 Video Processor in Windows Media Foundation (MF) has support for controlling whether the driver performs certain processing tasks automatically during video processor operations. The Video Processor component of the DX11 Video Processor automatically disables auto-processing during initialization on all Windows 8 devices regardless of driver or hardware.

More Information


Windows 8 tries to provide a consistent, high-quality video experience across devices (desktop and portable computers, tablet devices, and other devices). This is achieved by disabling auto-processing in the video driver by using the VideoProcessorSetStreamAutoProcessingMode method when the DX11 Video Processor is initialized. This makes sure of a consistent video playback experience and also consistent battery life expectations across Windows 8 devices and Microsoft Store apps.

Note Applications that depend on DX9 (for example, Windows Media Player) are not affected by this design and will continue to operate with auto-processing turned on.

Workarounds 
To enable auto-processing through the driver, applications can implement either a custom renderer (together with a custom video processor) or a custom video processor (that is, a video processor that is locally registered in an application). Be aware that .NET and JavaScript applications are limited to using the default windows renderer (SVR). Therefore, they cannot use custom renderers.

References


For more information about the DX11 APIs and the Video Processor component, go to the following Microsoft Developer Network (MSDN) websites: