On Wednesday 08 March 2006 19:26, Bob Cottingham wrote:
> I have a problem with my PVR-150 having low saturation. I have to
> max it out using ivtvctl --set-ctrl=saturation=127 to have good
> color. I also have two PVR-250s in another computer which don't have
> this problem. I asked about this on the -users list and found
> several others who are also experiencing this issue. It appears that
> we all have a TCL 2002N 5H (idx = 99, type = 50) tuner and are using
> ivtv-0.4.1, 0.4.2 or 0.4.3.
>
> Are you aware of this issue? Do you have any suggestions of what we
> could do to try to track this problem down and get it corrected? I'm
> going to try some older ivtv versions this weekend to see if this was
> something introduced recently, but was hoping for some guidance or
> solution in the meantime. Using ivtvctl to set the saturation
> doesn't work for me beyond the current recording because I am using
> mythtv and it resets the color settings with each recording.
It works perfectly fine for me, so that makes it harder to track down.
But first check that MythTV is not involved by doing the following test
(done with ivtv-0.4.3, also please supply the START INIT IVTV-END INIT
IVTV log):
Run ivtvctl -Y for the pvr150 and the pvr250 and check that brightness =
128 and contrast and saturation are both 64. Hue should be 0. There
should be no difference between the pvr150 and pvr250 regarding these
values.
Now tune both the pvr150 and 250 to the same channel and capture a bit.
Compare the two mpegs. If they clearly differ (some differences are
normal, for me the pvr150 is actually somewhat more saturated than the
pvr350) then I'd like to have the output of ivtvctl --log-status for
both the pvr250 and 150 while both are capturing, and either the mpegs
themselves or a screenshot taken from these mpegs.
I'd also appreciate it if people with a pvr150/500 and a pvr250/350 in
NTSC country can do a similar comparison and post the result. All I
need to know is whether there are major saturation differences and the
tveeprom messages in the kernel log of the pvr150/500.
Thanks,
Hans
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