my previous flatmate bought one of these digital menus used and it had a single DP input, he used a Chromecast and a box that extracted HDMI audio via TOSLINK and then a HDMI to DP converter for the panel. It worked great and it was a very cheap solution for the time.
I’ve seen some anime releases where they had separate mka files for different languages and a little script to attach whatever dub you want into it. It is technically possible already, but super rare
my previous flatmate bought one of these digital menus used and it had a single DP input, he used a Chromecast and a box that extracted HDMI audio via TOSLINK and then a HDMI to DP converter for the panel. It worked great and it was a very cheap solution for the time.