I wish to develop a windows application that can steam video media to a TV. What protocol/interface allows two-way communication between a TV and a Computer?
I'm aware that HDMI is one-way communication (from the source to the TV) so the computers application cannot query what the current volume or current source is which is not useful. Is there a protocol that allows 2 way communication?
Also using HDMI is it possible to:
- Change a TV's source? For example change to/from HDMI, AV1, AV2, etc.?
- Change a TV's volume?
Or is it only possible to use HDMI to transmit video/audio data?