Re: [Zapping-misc] decoding raw ntsc CC with em28xx

[Pádraig B. <P...@dr...>]

Pádraig Brady wrote:
> I'm having serious trouble with this.
> My tuner/driver on linux only provides raw VBI data.
> 
> I've modified contrib/ntsc-cc.c to set:
>   strict=0;
>   services=VBI_SLICED_CAPTION_525 | VBI_SLICED_VBI_525;
> That's the combination I get furthest with.
> I can see the raw pattern attached with this command:
>   ./zvbi-ntsc-cc --cc -v -r11 -w
> However nothing is decoded.

Turns out this was because the em28xx driver was setting
the wrong vbi.start number. Hence VBI data was noticed
on the 12th row, but the line was reported as 17 rather than 21.
I've fixed the driver and now the decoding is done correctly.

cheers,
Pádraig.