Linux video capture over firewire (IEEE1394)
You may need to add the debian multimedia repository to your sources list.
apt-get -y install dvgrab libraw1394-8 libavc1394-0 libiec61883-0
Plug the firewire PCI card into the PC and boot up.
grep 1394 /var/log/messages Nov 8 11:49:09 colourbox kernel: ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ= MMIO=[42100000-421007ff] Max Packet= IR/IT contexts=[4/8] Nov 8 11:49:09 colourbox kernel: eth1394: eth1: IEEE-1394 IPv4 over 1394 Ethernet (fw-host0)
This tells you that linux has registered the card and the 1394 interface.
In order to do DV video we use libraw1394 to import a digital video stream from the camera and also to give it commands like pause, record and fast-forward (known as AVC commands).