SVT HEVC encoder. Scalable Video Technology (SVT) is a software-based video coding technology that is highly optimized for Intel® Xeon® processors. Using the open source SVT-HEVC encoder, it is possible to spread video encoding processing across multiple Intel® Xeon® processors to achieve a real advantage of processing efficiency.
README.md states:
The whitepaper for SVT-HEVC can be found here: https://01.org/svt
However that URL now redirects to a generic Open.Intel web page:
https://www.intel.com/content/www/us/en/developer/topic-technology/open/overview.html