Posting here for greater visibility as no response as yet.
Had a look around, can't find anything (other than a python based web interface).
I run a headless media centre, using mpd and tvheadend and omxplayer.
I send commands to mpd and tvheadend remotely very easily. I want to do the same with a running omxplayer.
The way I start omxplayer is typically:-
ssh myuserid@myserver omxplayer {myfile_or_stream} &
All I want to do is, for example, turn the volume up or down on omxplayer subsequently.
Is there a way to do this?