It's a little more clear in the abstract. (At http://spie.org/OPO/conferencedetails/digital-image-processing#session-7 http://spie.org/OPO/conferencedetails/dig

It's a little more clear in the abstract. (At http://spie.org/OPO/conferencedetails/digital-image-processing#session-7 http://spie.org/OPO/conferencedetails/digital-image-processi...) > x265 outperforms libvpx in most cases, but the performance gap narrows (or even reverses) at the higher resolutions. So libvpx is sometimes better than x265 at resolutions > 1080p.