In accordance with DXVA specification, there are three kinds of hardware decode acceleration levels
1, MC acceleration (motion compensation, also previously mentioned that Pixel Prediction)
2, IDCT acceleration (previously referred to Frequency Transform) + MC speed
3, VLD acceleration (previously referred to the entropy decoding) + IDCT acceleration + MC acceleration + (deblocking fliter-loop Deblocking Filter)
In addition to comparing the old graphics card (for example, Geforce3) would then support the MC to accelerate, there is now GF6 / 7, X1000 series of the second stage, while the GF 8600/8500 third level support for H.264 acceleration, as well as the HD2000 series supports VC-1 / H.264 third level acceleration, of course, it also requires decoder support in order to be called.
When the player or decoder display DXVA (also known as DirectX VA), also represents the hardware acceleration has been opened.