Found this page: https://wiki.videolan.org/VSG:Subtitles:Disable/
There isn't good information to implement this in VLM, maybe it isn't currently possible.
Would like to disable subtitles because vlc currently can't parse embeded vobsub within file container and causes playback to pause.
new channel1 broadcast enabled
setup channel1 option sub-track-id=0
setup channel1 output #standard{access=http,mux=ts,dst=192.168.6.6,port=8080}
setup channel1 input file:////media/externalUSB/Movies/Red.m4v
control channel1 play
Thanks for any advice.