I´ve a Miro PCTV pro card in my system. It was detected as a "bt848 video
capture" and I set it up with the correct driver for the PCTV pro. When using
the v4l driver I get a picture but no sound, when using the v4l2 driver (which
is the default) the system locks up on opening the device.
hwinfo returns:

22: PCI 406.0: 11200 TV Card
  [Created at pci.277]
  UDI: /org/freedesktop/Hal/devices/pci_109e_350
  Unique ID: +QnG.ei6eMzKDZY3
  Parent ID: H0_h.Xi7km9jxxp1
  SysFS ID: /devices/pci0000:00/0000:00:06.0/0000:04:06.0
  SysFS BusID: 0000:04:06.0
  Hardware Class: tv card
  Model: "Brooktree Bt848 Video Capture"
  Vendor: pci 0x109e "Brooktree Corporation"
  Device: pci 0x0350 "Bt848 Video Capture"
  Revision: 0x12
  Driver: "bttv"
  Memory Range: 0xbfeff000-0xbfefffff (rw,prefetchable)
  IRQ: 7 (no events)
  Module Alias: "pci:v0000109Ed00000350sv00000000sd00000000bc04sc00i00"
  Driver Info #0:
    Driver Status: bttv is active
    Driver Activation Cmd: "modprobe bttv"
  Config Status: cfg=yes, avail=yes, need=no, active=unknown
  Attached to: #6 (PCI bridge)

In the boot log I have:

Oct  5 20:31:07 r098088 kernel: Linux video capture interface: v1.00
Oct  5 20:31:07 r098088 kernel: ivtv_tveeprom: module not supported by Novell,
setting U taint flag.
Oct  5 20:31:07 r098088 kernel: bttv: driver version 0.9.16 loaded
Oct  5 20:31:07 r098088 kernel: bttv: using 8 buffers with 2080k (520 pages)
each for capture
Oct  5 20:31:07 r098088 kernel: bttv: Bt8xx card found (0).
Oct  5 20:31:07 r098088 kernel: ACPI: PCI Interrupt 0000:04:06.0[A] -> Link
[LNKF] -> GSI 7 (level, low) -> IRQ 7
Oct  5 20:31:07 r098088 kernel: bttv0: Bt848 (rev 18) at 0000:04:06.0, irq: 7,
latency: 32, mmio: 0xbfeff000
Oct  5 20:31:07 r098088 kernel: bttv0: using: MIRO PCTV [card=1,insmod option]
Oct  5 20:31:07 r098088 kernel: bttv0: gpio: en=00000000, out=00000000
in=00ff07ff [init]
Oct  5 20:31:07 r098088 kernel: i2c-algo-bit.o: (0) scl=1, sda=1
Oct  5 20:31:07 r098088 kernel: i2c-algo-bit.o: (1) scl=1, sda=0
Oct  5 20:31:07 r098088 kernel: i2c-algo-bit.o: (2) scl=1, sda=1
Oct  5 20:31:07 r098088 kernel: i2c-algo-bit.o: (3) scl=0, sda=1
Oct  5 20:31:07 r098088 kernel: i2c-algo-bit.o: (4) scl=1, sda=1
Oct  5 20:31:07 r098088 kernel: i2c-algo-bit.o: bt848 #0 [sw] passed test.
Oct  5 20:31:07 r098088 kernel: bttv0: i2c: checking for MSP34xx @ 0x80... not found
Oct  5 20:31:07 r098088 kernel: bttv0: miro: id=1 tuner=0 radio=no stereo=no
Oct  5 20:31:07 r098088 kernel: bttv0: using tuner=0
Oct  5 20:31:07 r098088 kernel: bttv0: i2c: checking for MSP34xx @ 0x80... not found
Oct  5 20:31:07 r098088 kernel: bttv0: i2c: checking for TDA9875 @ 0xb0... not found
Oct  5 20:31:07 r098088 kernel: bttv0: i2c: checking for TDA7432 @ 0x8a... not found
Oct  5 20:31:07 r098088 kernel: tvaudio: TV audio decoder + audio/video mux driver
Oct  5 20:31:07 r098088 kernel: tvaudio: known chips:
tda9840,tda9873h,tda9874h/a,tda9850,tda9855,tea6300,tea6320,tea6420,tda8425,pic16c54
(PV951),ta8874z
Oct  5 20:31:07 r098088 kernel: bttv0: i2c: checking for TDA9887 @ 0x86... not found
Oct  5 20:31:07 r098088 kernel:  : chip found @ 0xc0 (bt848 #0 [sw])
Oct  5 20:31:07 r098088 kernel:  : All bytes are equal. It is not a TEA5767
Oct  5 20:31:07 r098088 kernel: tuner 1-0060: type set to 0 (Temic PAL (4002 FH5))
Oct  5 20:31:07 r098088 kernel:  : chip found @ 0xc2 (bt848 #0 [sw])
Oct  5 20:31:07 r098088 kernel: bttv0: registered device video0
Oct  5 20:31:07 r098088 kernel: bttv0: registered device vbi0
Oct  5 20:31:07 r098088 kernel: tuner 1-0061: tuner type not set
Oct  5 20:31:07 r098088 kernel: BIOS EDD facility v0.16 2004-Jun-25, 1 devices found
Oct  5 20:31:07 r098088 kernel: hdb: ATAPI 48X DVD-ROM DVD-R CD-R/RW drive,
2048kB Cache, UDMA(33)
Oct  5 20:31:07 r098088 kernel: Uniform CD-ROM driver Revision: 3.20
Oct  5 20:31:07 r098088 kernel: ACPI: Power Button (FF) [PWRF]
Oct  5 20:31:07 r098088 kernel: ACPI: Power Button (CM) [PWRB]
Oct  5 20:31:07 r098088 kernel: NET: Registered protocol family 10
Oct  5 20:31:07 r098088 kernel: Disabled Privacy Extensions on device c036b920(lo)
Oct  5 20:31:07 r098088 kernel: IPv6 over IPv4 tunneling driver
Oct  5 20:31:07 r098088 kernel: bootsplash: status on console 0 changed to on
Oct  5 20:31:07 r098088 kernel: IA-32 Microcode Update Driver: v1.14
<tigran@veritas.com>
Oct  5 20:31:07 r098088 kernel: IA-32 Microcode Update Driver v1.14 unregistered
Oct  5 20:31:07 r098088 kernel: eth0: Setting full-duplex based on MII#1 link
partner capability of 45e1.
Oct  5 20:31:07 r098088 kernel: tuner 1-0061: tuner type not set