How to disable DXVA programmatically?

You can control DXVA programmatically using Media Foundation (MF). In Windows 7, the MF_TOPOLOGY_DXVA_MODE attribute can be set on a topology to disable DXVA. It can also be disabled by querying the decoder for IPropertyStore and setting MFPKEY_DXVA_ENABLED to false.  Please make sure you understand the consequences before disbling DXVA.

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