Closed Captioning: Difference between revisions

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This is a record of my to date failed attempt to make closed captioning work on my FlyVideo3000FM card.

In the zvbi tarball, available on [http://zapping.sourceforge.net/cgi-bin/view/ZVBI/Download#Source_Code zvbi's project page], there are several useful utilities for testing [[text_capture | text capture]].

Using the "capture" utility, I'm picking up something, but it looks like the title of the program rather than the conversation:

zvbi-0.2.15/test# ./capture -v --ntsc --dump-cc
Try to open V4L2 0.20 VBI device, libzvbi interface rev.
$Id: io-v4l2.c,v 1.31 2004/12/30 02:24:11 mschimek Exp $
Opened /dev/vbi
Try to open V4L2 2.6 VBI device, libzvbi interface rev.
$Id: io-v4l2k.c,v 1.27 2005/01/20 01:40:14 mschimek Exp $
Opened /dev/vbi
/dev/vbi (LifeView FlyVIDEO3000) is a v4l2 vbi device,
driver saa7134, version 0x0000020c
Using streaming interface
Current scanning system is 525
Querying current vbi parameters... success
VBI capture parameters supported: format 59455247 [GREY], 27000000 Hz,
2048 bpl, offs 256, F1 10...21, F2 272...283, flags 00000000
Attempt to set vbi capture parameters
VBI capture parameters requested: format 59455247 [GREY], 27000000 Hz,
1457 bpl, offs 256, F1 10...21, F2 272...284, flags 00000000
Successfully set vbi capture parameters
VBI capture parameters granted: format 59455247 [GREY], 27000000 Hz,
2048 bpl, offs 256, F1 10...21, F2 272...283, flags 00000000
Nyquist check passed
Request decoding of services 0x40000060, strict level 0
Will capture services 0x00000060, added 0x60 commit:1
Requesting 5 streaming i/o buffers
Mapping 5 streaming i/o buffers
Successful opened /dev/vbi (LifeView FlyVIDEO3000)

p waiitn.h . Ja. y ).Le.,no.,.@./.../HE...^.........*......n@..
^L..........NB..C...........HE...^......Th..e..To..ni..gh..t ..
Sh..ow..h?h? w..it..h ..Ja. y . ????Le.Xno.X.@."..."SA.*NT..IAH
EGO.^:....xNB.xC.."..."..Hen@y,^L h..ey.., Thheey.To.,ni.,gh./t
./Sh...?ow.. w..it..h ..Ja..y..Le..no...@......HE...^.........*
......NB..C...........HE...^......Th..e ..To..ni..gh..t..????Sh
..ow.. w..it..h ..Ja..y ..Le. no. .@.P...Pn@Yo^Lu'..ll.. b e.*
ok..ayHE...^.p...pNBLoC.ok... ..LoThoke aTot nimegh..t .,Sh.,o
w./w./it..h ..Ja..y ..Le..no...@......HE...^...... ...*......n@
..^L..........NB..C...........HE..??.^

On a bttv card, things look much better:

# ./capture -v --ntsc --dump-cc
Try to open V4L2 0.20 VBI device, libzvbi interface rev.
$Id: io-v4l2.c,v 1.31 2004/12/30 02:24:11 mschimek Exp $
Opened /dev/vbi
Try to open V4L2 2.6 VBI device, libzvbi interface rev.
$Id: io-v4l2k.c,v 1.27 2005/01/20 01:40:14 mschimek Exp $
Opened /dev/vbi
/dev/vbi (BT878 video (AVerMedia TVCaptur) is a v4l2 vbi device,
driver bttv, version 0x0000090f
Using streaming interface
Current scanning system is 525
Querying current vbi parameters... success
VBI capture parameters supported: format 59455247 [GREY], 28636363 Hz,
2048 bpl, offs 244, F1 10...25, F2 273...288, flags 00000000
Attempt to set vbi capture parameters
VBI capture parameters requested: format 59455247 [GREY], 27000000 Hz,
1457 bpl, offs 256, F1 10...21, F2 272...284, flags 00000000
Successfully set vbi capture parameters
VBI capture parameters granted: format 59455247 [GREY], 28636363 Hz,
2048 bpl, offs 244, F1 10...21, F2 273...284, flags 00000000
Nyquist check passed
Request decoding of services 0x40000060, strict level 0
Will capture services 0x00000060, added 0x60 commit:1
Requesting 5 streaming i/o buffers
Mapping 5 streaming i/o buffers
Successful opened /dev/vbi (BT878 video (AVerMedia TVCaptur)

....................................................... . .P.P....AND THE BRAVES
HAVE JUST WON.t.t....THE WORLD SERIES!..,.,././.................................
................................................................................
.......................... . .R.R....OH, WHAT A TRAVESTY!...,././...............
............................................. . .T.T....THAT, MY FRIENDS,..p.p..
..WILL FOREVER BE KNOWN AS.....,.,././..........................................
.......................T.T...."A GOOCHER.".,.,././..............................

Revision as of 19:19, 8 October 2005