I just recently found this device that claims to be of the UTV007 chipset and accept an HDMI connection directly.
Could be a great resource for those of use using USB grabbers since it will eliminate a piece of hardware!
https://www.aliexpress.com/ite…2-0-HD-1/32827676511.html
At $17 as of writing this, I may pick one up to experiment with if nobody else has!