I have had a good around the internet before coming here and asking for some help.
So, I would like to record an Acestream stream.
I have tried various command-line variations but have had no luck:
acestream-launcher acestreamID -p "mpv --record-file=/home/dave/Desktop/acestreamtestrecord1.mp4"
acestream-launcher -p "mpv --stream-/home/dave/Desktop/acestreamtestrecord2.mp4" acestreamID