Record a transport stream with an USB2 tv card

Hi everybody
I'm working on a multimedia linux kernel project 
At the end of the project we will be able to scan dvb-t channels, see channels, record transport streams  
for the developpemnt i use the mandriva 2006 release (kernel 2.6.12).
I've installed dvbstream, dvb-apps, dvbsnoop, libdvb,...

Everything is working but i want to record a transport stream and not one program stream with my Hauppauge Win TV Nova-T-USB2 tv card using dvbstream but my output file is always empty.

The scan (with dvbscan) works well and i can watch dvb-t channels in mplayer

I've tested several commands such as:
        dvbstream -f 490000000 -o 8192 > /tmp/test.ts
         (...)

I've seen in the dvbstream package (dvbstream.c) that the code have to read the buffer value for doing its treatment.
  
Does anyone can help me?
         
 

El Hadji Abdou NIANG
2 Rue du Gal Delestraint 
57070 Metz
0387793139