Hi everyone.
I've made a video about JMCC his media script for Armbian Buster legacy on RK3399/Station P1(also possible for M1).
This makes Chromium GPU accelerated, and also installs Kodi with full acceleration. So you can watch 4k video at 4k display resolution with it.
Here is my video.
Best to use Balbes150 his Buster legacy images for the P1 or M1.
You can also build your own images. For that I've made another video.

I've got many more videos about RK3399 boards. All info is the same for the station P1.