How to setup mosaic in VLC under Mac OS?

Question

Video

Good afternoon. Need to configure MOSAIC display in VLC under Mac Os 10.10.5. Ideally, I need to get 4 videos in one player (as in a regular quad). The VLC config file looks like this (mosaic.conf):

new channel1 broadcast enabled
setup channel1 input udp://@192.168.2.176:8001
setup channel1 output #duplicate{dst=mosaic-bridge{id=1,height=144,width=180},select=video,dst=bridge-out{id=1}}

new channel2 broadcast enabled
setup channel2 input udp://@192.168.2.176:8002
setup channel2 output #duplicate{dst=mosaic-bridge{id=2,height=144,width=180},select=video,dst=bridge-out{id=2}}

new mosaic broadcast enabled
setup mosaic input file:///Users/username/picture.jpg
setup mosaic output #transcode{sfilter=mosaic,vcodec=mp4v,vb=10000,scale=1}:bridge-in{delay=400,id-offset=100}:standard{access=udp,mux=ts,url=192.168.2.176:1234,sap,name="mosaic"}

control mosaic play
control channel1 play
control channel2 play

I start VLC like this:

/Applications/VLC.app/Contents/MacOS/VLC -vvv --color -I dummy --vlm-conf /Users/username/mosaic.conf --ttl 1 --udp-caching 800

It seems like there are no errors in the output of the command, but there is no treasured picture.
Tell me, please, is it possible to implement this in VLC under Mac or am I wasting my time?
PS all the streams registered in the config are successfully opened one by one in VLC.
VLC latest version.
Maybe someone knows how to implement MOSAIC on some other solution?

Answer 1

With the help of FFmpeg (ffplay) this is done something like this:
see the documentation on ffmpeg.org for details.