http-stream-server

[maffioso]

I like to set up a http-server with vlc where a dvb-t card is the input-device.
I saw this command on the streaming-howto:
vlc -vvv input_stream --sout '#rtp{dst=192.168.0.12,port=1234,sdp=rtsp://server.example.org:8080/test.sdp}'

My question: is it necessary to change input_stream into something else.
For example something that defines my card or not?
Please let me know because the command for vlc or very difficult for me.

Cheers