>From the /usr/ports/math/py-pytorchvideo/Makefile is seems that MAINTAINER= ports[at]FreeBSD.org so someone on this list created the port.
If both torch and torchvision builds fine on FreeBSD then creating a system wide port for them should be easy so everyone would have acces to these packages :-) -- CeDeROM, SQ7MHZ, http://www.tomek.cedro.info