Hi Kasi. How did you get it working with an internal grabber? I would rather avoid using an external grabber.
When i try to run hyperion-framebuffer it gives me errors like FRAMEBUFFERGRABBER ERROR: Unknown pixel format: 16190616 bits per pixel. Probably because it is using the wrong framebuffer device. If i run with -d /dev/fb0, i get a segfault. I couldn't get hyperion-x11 compiled, but i doubt it would work.
I am running Libreelec on a Rockpro64