If you are okay with WebM as your video format.
It looks like to do 4K60 capture it has to be WebM.
Looks like for MP4 the system only allows 1080p60.
It looks like the MP4 captures top out at 1080p.
I think they are allowing the WebM only to do 4k60 manual captures. I'm curious as to why I guess because of space concerns.
Ah, thanks. I am not too familiar with WebM format insofar as compression ratio to perceptual quality is concerned (where Matroska format is phenomenal).