There may be. This glossary
from Bernat yarns includes them; yfrn is the same as yrn. YON and YFRN are british/canadian terms for YOs; they describe
how to move the yarn while YO is the result.
But I don't know of a video and it can be described. Basically, the YON goes from a purl to knit - instead of moving the yarn to the back between the needles, lay it loosely over the top of the needle from front to back. YFRN, goes from a knit to a purl - make a regular YO (or bring yarn to front, then over the needle to the back) then bring yarn to the front again through the needle tips. You can practice these on a sample, use some leftover yarn and whatever needles you have handy.