The command i'm using is : vlc -vvv --color --vlm-conf --mosaic-width=360 --mosaic-height=288 --mosaic-keep-picture --mosaic-rows=2 --mosaic-cols=2 --mosaic-position=1 --mosaic-order=1,2,3,4 mosaic.vlm --ttl 12 --udp-caching 800 --file-logging Correct me if I'm wrong but shouldn't you be specifying...