Re: question about pal video capture

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> hi folks :
> 
> i am using a bt878 based capture card and hope to capture the video
> signal out from a DVD player directly via the xawtv.  it works perfectly
> for the NTSC signal but not the PAL signal.  i tried to alter the NORM
> for the signal but it did'nt work.  any comment ?
> 
> many thanks
> 
> cheers,
> kai

Sure your DVD player supports PAL output?
Had the same problem with a NTSC camera connected to a capture board.
The Siemens MXB board
(http://www-c.informatik.uni-hannover.de/~hunold1/linux/saa7146/index.html#supported)
was running fine, switching between PAL (cable tuner) and NTSC (cam on
composite-in) worked "out of the box" with xawtv.
With a bt848 and a bt878 based board this wasn't possible because the BTTV
driver (used BTTV2) didn't allow switching the norm while a grabber
application
was running. I had to restart xawtv (or any other app) to switch between
NTSC
and PAL. For xawtv this resulted in setting the norm in the config file
_before_
starting xawtv.
Another thing: It depends on the layout of the bt8x8 board if they support
both
PAL and NTSC (except the TV tuner which is one-norm-only on most of the
boards,
at least here in Europe). A guy from the german debian list told me that
bt848
boards need two quartz pieces to support PAL and NTSC and that for newer
bt chips (878?) a solution with one quartz is possible and that his 848 does
not support anything else than PAL. He told me to have a look at the bt8x8
data
sheets to find out whether my boards are supporting NTSC or not.
Unfortunately
I never looked at these papers - I just tried and both my 848 and 878 board
support NTSC on the composite-in ... :)


Regards,
Andreas


-- 


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http://www.gmx.net





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