I don't think kodi supports dual video output on any platform, so no.
HW HEVC support is coming to VLC and that should support running fullscreen on either display so that should be an option.
You could use omxplayer and H.264 videos is you want a solution that works now.
Yeah, but as far as I know H.264 HW decode is limited to 1080p@60 and I want to use 4K content, so
Or I'm wrong?
PD: sorry for the off-topic hehehe