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it home reported on september 4 that technology media neowin published a blog post yesterday (september 3), reporting that microsoft has pushed the wddm 3.2 update to copilot+ pc devices using windows 11 24h2, focusing on adding encoding support for the av1 format.

it home attaches the microsoft update log document as follows:

starting from windows 11 version 24h2 (wddm 3.2), direct3d12 video encoding capabilities are extended to support av1 encoding.

this update extends the existing video-related framework to let drivers report av1 video encoding support and capabilities.the video encoding framework provides video encoding hardware acceleration capabilities for different scenarios such as the internet of things (iot), cloud, media apis, machine learning, and game streaming.

it home note: through direct3d 12 video, windows applications can leverage the power of the gpu to perform hardware-accelerated video decoding, encoding, video processing, and motion estimation.

wddm stands for windows display driver model, which is microsoft's new generation of graphics driver model. amd initially supports wddm 3.2 in this update.

wddm 3.2 introduces several changes, especially optimizing the use of gpu and npu in cloud scenarios. it is worth noting that npu optimization is only applicable to pcs equipped with dedicated npu chips. in addition to npu optimization, a noteworthy feature is dirty bit tracking, which improves vram data transfer performance.