For today stably to work vlc (0.9.9-1.0.2) in dv as devices it is possible in the unique way:
dvgrab -nostop --buffers 10 -f raw - | vlc -I dummy --reset-plugins-cache - :demux=rawdv :rawdv-realtime :file-caching=1000 --no-sub-autodetect-file \
--sout '#transcode{vcodec=mp2v,vb=4096,acodec=mpga,ab=192,channels=2}:std{access=udp,mux=ts,dst=239.255.1.2:1234}'
But in such variant it is impossible to place this string a demon. What variants for operation by a demon can be?