[mythtv-users] S-Video Problems

[Julian Edwards]

On Wed, 2004-04-14 at 09:34, Colin Bell wrote:
> I have been mostly successful with my Mandrake 9.2, PAL, MythTV setup. 
> During its creation I was using the composite in on a PVR 250, but as 
> soon as my cables arrived I switched over to S-VIDEO (much better 
> quality BTW). I did notice that the picture came through in Black & 
> White. I find that if I run the ivtv "test_ioctl -p 0" command in the 
> shell, I get my colour back. However if I begin to record it reverts to 
> black & white again. I have checked mythtvsetup and confirmed that its 
> set to PAL and that Svideo0 is the input etc.
> 
> My best guess is that MythTV is attempting some kind of channel change 
> or something. I can' imagine where MYTH is getting its settings from.

SVIDEO can transport composite also, so you have probably got the wrong
SVIDEO input selected.  I can't remember which you  need for a 250 but
I'm sure you'll find it with experimentation in the mythtvsetup
program.  If you choose the wrong setting from whatever is being input
you'll always find that the signal is B&W rather than colour.

Note that TVs can't tell the difference (or at least all the ones I've
ever used) between composite and SVIDEO which is why you need to select
appropriately on SCART inputs!

J.
-- 
Julian Edwards
http://www.julian-edwards.com/
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