Ipcs

I have the following line in /etc/modprobe.d/bttv.conf options bttv card=131,131,131,131,131,131,131,131

or on a newer system (as .conf is deprecated)

/etc/modprobe.d/mycapturecard options bttv card=131,131,131,131,131,131,131,131

I have 8x131 as I have 2 cards which I think is a WDT 2116. which gives me 16 inputs. ipcs -m Shows what shared memory segments are in use and whom they are owned by.