Controling capture and output stream frame rates

[triplebit]

Hi all,
I have 2 questions regarding controling the input and the output frame rates.
1. I stream with VLC command line interface. I use "dshow://" to capture webcam and want to reduce the frame rate. WIth the GUI interface I manage to reduce it to 6 farmes/sec, how do I modify my input, "dshow://" , to support that?
2. In addition, I use the following command line to stream to the output and it works fine.
":sout=#transcode{vcodec=mp4v,vb=32,scale=1,acodec=mpga,ab=32,channels=2}:duplicate{dst=display,dst=std{access=udp,mux=ts,dst=10.0.0.4:8088}}"
How do I modify that to reduce the output frame rate to 6
Regards
Ronny