video encoding using CUDA

I have just tested H.264 encoding with MediaCoder which seems to use CUDA encoding on the GPU using nvcuvenc.dll, Does the interface to this library is open? If yes, does documentation available anyware? if Not, does Nvidia plan to release such CUDA encoding API?

shoko, did you find an answer to this question? I’m also interested in your results, and the possibility of using nvcuvenc in my code.