sudo mtt -debug -tty -device /dev/vbi0
Try to open V4L2 0.20 VBI device, libzvbi interface rev.
  $Id: io-v4l2.c,v 1.33 2006/05/22 09:00:47 mschimek Exp $
Opened /dev/vbi0
libzvbi:capture_v4l2k_new: Try to open V4L2 2.6 VBI device, libzvbi interface rev.
  $Id: io-v4l2k.c,v 1.42 2006/09/24 03:10:04 mschimek Exp $.
libzvbi:capture_v4l2k_new: Opened /dev/vbi0.
libzvbi:capture_v4l2k_new: /dev/vbi0 (Pinnacle Hybrid Pro (2)) is a v4l2 vbi device,
driver em28xx, version 0x00000001.
libzvbi:capture_v4l2k_new: Using streaming interface.
libzvbi:v4l2_get_videostd: Current scanning system is 625.
libzvbi:v4l2_update_services: Querying current vbi parameters...
libzvbi:v4l2_update_services: ...success.
libzvbi:print_vfmt: VBI capture parameters supported: format 59455247 [GREY], 13500000 Hz, 720 bpl, offs 0, F1 15...20, F2 10...15, flags 00000000.
libzvbi:print_vfmt: VBI capture parameters granted: format 59455247 [GREY], 13500000 Hz, 720 bpl, offs 0, F1 15...20, F2 10...15, flags 00000000.
libzvbi:_vbi_sampling_par_valid_log: Invalid VBI scan range 15-20 (6 lines), 10-15 (6 lines).
libzvbi:v4l2_update_services: Nyquist check passed.
libzvbi:v4l2_update_services: Request decoding of services 0x60000c7f, strict level -1.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000001 (Teletext System B 625 Level 1.5) requires videostd_set 0x1, have 0x0.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000003 (Teletext System B, 625) requires videostd_set 0x1, have 0x0.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000001 (Teletext System B 625 Level 1.5) requires videostd_set 0x1, have 0x0.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000003 (Teletext System B, 625) requires videostd_set 0x1, have 0x0.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000004 (Video Program System) requires videostd_set 0x1, have 0x0.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000400 (Wide Screen Signalling 625) requires videostd_set 0x1, have 0x0.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000008 (Closed Caption 625, field 1) requires videostd_set 0x1, have 0x0.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000010 (Closed Caption 625, field 2) requires videostd_set 0x1, have 0x0.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000020 (Closed Caption 525, field 1) requires videostd_set 0x2, have 0x0.
libzvbi:_vbi_sampling_par_permit_service: Service 0x00000040 (Closed Caption 525, field 2) requires videostd_set 0x2, have 0x0.
libzvbi:v4l2_update_services: Will capture services 0x00000000, added 0x0 commit=1.
libzvbi:capture_v4l2k_new: Failed with errno 22, errmsg 'Sorry, /dev/vbi0 (Pinnacle Hybrid Pro (2)) cannot capture any of the requested data services.'.
libzvbi: Try to open v4l vbi device, libzvbi interface rev.
  $Id: io-v4l.c,v 1.33 2006/05/22 09:01:04 mschimek Exp $
libzvbi: Opened /dev/vbi0
libzvbi: Driver name 'Pinnacle Hybrid Pro (2)'
libzvbi: Attempt to guess the videostandard
libzvbi: Driver supports VIDIOCGTUNER: mode 0 (0=PAL, 1=NTSC, 2=SECAM)
libzvbi: Videostandard is PAL/SECAM
libzvbi: /dev/vbi0 (Pinnacle Hybrid Pro (2)) is a v4l vbi device
libzvbi: Hinted video standard 0, guessed 625
libzvbi: Driver supports VIDIOCGVBIFMT, guessed videostandard 525
VBI capture parameters supported: format 0000000c, 13500000 Hz, 720 bpl, F1 15+6, F2 10+6, flags 00000000
VBI capture parameters granted: format 0000000c, 13500000 Hz, 720 bpl, F1 15+6, F2 10+6, flags 00000000
libzvbi: Accept current vbi parameters
libzvbi: Nyquist check passed
libzvbi: Request decoding of services 0x60000c7f, strict level -1
libzvbi: Will capture services 0x00000000, added 0x0 commit:1
vbi: open failed [/dev/vbi0]