Kind of how ever I had already read through that one and it and there wasn't really much detail to it. Also no mention on if they were able to get a usb grabber to process input from an external source. So I started a thread to consolidate that and as I do it to document the process so other's could more easily.
Speaking of which, once I figure out how to access the terminal on the slice and figure out how to get hyperion running I have already nailed down a supply list that makes for a cheaper alternative to the lightberry kit minus the upgrade in the amount of LEDs.
https://lightberry.eu/shop/shop/easycap-video-grabber/ (any UTV007 chipset will do)
With this and a switcher one should be able to use the Slice also as a brain for an ambilight effect for ll inputs.