FFmpeg 4.0 supports it
NVIDIA NVDEC-accelerated H.264, HEVC, MJPEG, MPEG-1/2/4, VC1, VP8/9 hwaccel decoding
But with the latest version of Plex beta, I’m not hardware decoding VC1. I guess it’s never done it, but FFMpeg supports it so there’s no reason Plex shouldn’t?
