[ivtv-users] CX18: Black and white horizontal line with HVR-1600

[Andy Walls]

On Mon, 2009-02-23 at 17:40 -0800, k niemand wrote:
> I realized that my message got posted under the wrong thread... 
> 
> I use NTSC and it always has been a problem (even when I use the tuner
> input). I use a cable box from my TV provider. 

Well I'd suggest the latest driver from the main repository:

http://linuxtv.org/hg/v4l-dvb

and see if the problem still persists.  If dmesg tells you right now
that you're using a cx18 driver less than version 1.0.4, things should
get better with the latest driver.

Instructions are here:

http://www.ivtvdriver.org/index.php/Cx18

but last I heard, Ubuntu does some distribution specific things that may
make compiling the latest v4l-dvb repo harder than it has to be.  Sorry,
I won't be able to help with that if that's the case.


> Any idea of when you have time to look at this issue? It sounds like
> you are very busy. 

I'm travelling off and on the the next two weeks, so I'm not sure when I
will be looking at it.

Regards,
Andy

> Anything I can try?
> 
> Thanks,
> Joe
> 
> 
> 
> --- On Thu, 2/12/09, Andy Walls <awalls at radix.net> wrote:
> 
> > From: Andy Walls <awalls at radix.net>
> > Subject: Re: [ivtv-users] CX18: Black and white horizontal line with HVR-1600
> > To: jknoedel at yahoo.com, "User discussion about IVTV" <ivtv-users at ivtvdriver.org>
> > Date: Thursday, February 12, 2009, 10:45 PM
> > On Thu, 2009-02-12 at 17:11 -0800, k niemand wrote:
> > > I have a HVR-1600 card and installed the latest
> > driver. I use the
> > > latest Ubuntu distribution. Composite input works fine
> > apart from an
> > > annoying black and white horizontal line at the top of
> > the picture. I
> > > tried the --set-crop option using v4l2-ctl (v4l2-ctl
> > > --set-crop=top=1), but the responds I get is
> > "VIDIOC_G_CROP: failed:
> > > Invalid argument". 
> > 
> > The driver doesn't really support the crop ioctl.  It
> > provides a stub
> > that goes through some trivial motions, but then always
> > returns -EINVAL.
> > 
> > 
> > > Does anyone have any ideas of how to get rid of this
> > line? 
> > 
> > Well, I have to fix the driver to get rid of it.
> > 
> > That line is part of the Vertical Blanking Interval; the
> > white areas are
> > data that's being sent (like CC over NTSC or VPS or
> > Teletext for other
> > video standards).  The wrong values for vblank and vactive
> > may be being
> > used in the cx18-av-core.c file. 
> > 
> > Are you using PAL, SECAM, or NTSC?  Is this a new problem,
> > or one that
> > you have always had?  What is the composite video source: a
> > VCR, a cable
> > convertor, or something else?
> > 
> > Regards,
> > Andy
> > 
> > 
> > > Thanks,
> > > Joe
> 
> 
> 
>       
> 
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