Setup VLC as External Player

After setting up Allcast as an External Player, I am familiar with the process and with the playercorefactory.xml file but not all the details of the parameters
I have found various playercorefactory.xml files with different entries for VLC Player but non work for me.
I guess one critical one is the filename parameter, which presumably tells the program the location of the Player executable
One file uses com.vlcforandroid.vlcdirectprofree for this
Another uses /usr/bin/vlc
Others use definitions obviously intended for a Windows platform.
I guess this needs to be tailored to the particular Android build
My devise is a Hudl Android 5.1 x86_64.
Any suggestions for a filname to use or how I might get this from my file system. I am not rooted