On Sunday 02 April 2006 21:50, Michael Dale wrote:
> Hello ivtv,
> first, Thanks for the great work on the ivtv driver it is a key part
> of our entirely open source archive system.
> I am working on an open political proceeding's archive project:
> (metavid.org)
>
> To capture the close captions stream I have been just running the
> following via the ivtv drivers
> #ivtvctl --set-vbi=cc
> #cat /dev/vbi > text_file
> #tail -f text_file ... take text every 30 seconds, run some clean up
> and insert it into the db.
>
> This ofcourse never worked very well (there was gibberish and what
> not) now possibly because I updated ivtv to v0.4.4 or changed some
> other parameter its now even more gibberishy than before and not
> really working at all....
>
> I tried using the zvbi lib to decode the raw cc stream ....running:
> #zvbi-ntsc-cc -d /dev/vbi -c -p ...but it just scrolls with "read
> error"
>
> Any ideas as to how to grab the ASCII close caption data in a
> relatively cleanly? Or just print ASCII close captions to the screen?
ivtv contains a 'vbi' test tool (in the test directory). That can be
used to decode the CC data. You get a sliced VBI stream BTW, not raw.
Big difference.
Hans
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