On the server I tried:
gnutv -out udp raspberrypi 1000 arte
and
gnutv -out rtp raspberrypi 1000 arte
But on the client I can't recieve the stream!
Playing udp://raspberrypi:1000.
STREAM_UDP, URL: udp://raspberrypi:1000
Failed to connect to server
udp_streaming_start failed
No stream found to handle url udp://raspberrypi:1000
Playing rtp://raspberrypi:1000.
STREAM_RTP, URL: rtp://raspberrypi:1000
Failed to connect to server
rtp_streaming_start failed
No stream found to handle url rtp://raspberrypi:1000
Try to use rtp://localhost:1000 on the client.