What are gstreamer plugin options for hardware accelerated h265 video decoding in GeForce GTX 1050 Ti?

I have heard about nvenc/nvdec. But I don’t know how to install these plugins in ubuntu16.04(default GStreamer 1.8.3). OR in which ubuntu system configuration it can be installed?

Are there any other any more efficient gstreamer plugin for h265dec? How to install them?