GPU Video decoding


is it possible to decoding video on GPU via OpenGL under Windows?
Maybe using some extensions?

Thank you

Are you referring to what video player software usually calls hardware acceleration? I always thought that uses different APIs and some dedicated circuitry on the chip (I may well be wrong here, I don’t know much about video acceleration techniques).
I could imagine that it is quite possible to accelerate certain steps of video decompression on the GPU, however like many non-rendering specific tasks it’s probably easier to use a compute API (OpenCL or CUDA).

I am referring in particular to the GL_NV_vdpau_interop extension. VDAPU seems a collection of API to off load video decompression to GPU via openGL but it seems it doesn’t work for windows. I suspect that, under windows, you only one choice and it is Microsoft’s DxVA (DirectX Video Acceleration) API.