[ivtv-users] ivtv-users Digest, Vol 42, Issue 9

[k niemand]

> Date: Thu, 12 Feb 2009 17:11:08 -0800 (PST)
> From: k niemand <jknoedel at yahoo.com>
> Subject: [ivtv-users] CX18: Black and white horizontal line
> with
> 	HVR-1600
> To: ivtv-users at ivtvdriver.org
> 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>
> Message-ID:
> <1234496715.3094.58.camel at palomino.walls.org>
> Content-Type: text/plain
> 
> 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.

I thought so, but wasn't sure. 

> 
> 
> > 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?

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.

Thanks,
Joe

> 
> Regards,
> Andy
> 
> 
> > Thanks,
> > Joe
> 
> 
> 
> 
> 
> ------------------------------
> 
> Message: 5
> Date: Thu, 12 Feb 2009 22:59:59 -0500
> From: Andy Walls <awalls at radix.net>
> Subject: Re: [ivtv-users] CX18 audio
> To: User discussion about IVTV
> <ivtv-users at ivtvdriver.org>
> Message-ID:
> <1234497599.3094.68.camel at palomino.walls.org>
> Content-Type: text/plain
> 
> On Thu, 2009-02-12 at 07:36 +0100, . . wrote:
> > I'm not sure if a new thread is needed or not.
> > 
> > In MythTV I can't set the audio sampling rate to
> anything other than
> > 48000 for the NTSC side of the cx18 with v4l-dvb rev
> 10516. It's not
> > that important because I prefer the audio sampling
> rate to be 48000. I
> > noticed this when reading the threads about audio
> issues because I'm
> > looking into the audio buzz/static I'm
> experiencing.
> 
> 
> If you kill the Mythbackend, can you control it with
> v4l2-ctl ?
> 
> I suspect it's a MythTV problem.  Here's when
> I'm set to the tuner:
> 
> $ v4l2-ctl --log-status | grep Audio:
>    cx18-0: Audio:  48 kHz, MPEG-1/2 Layer II, 224 kbps,
> Stereo, No Emphasis, No CRC
> $ v4l2-ctl -c audio_sampling_frequency=0
> $ v4l2-ctl --log-status | grep Audio:
>    cx18-0: Audio:  44.1 kHz, MPEG-1/2 Layer II, 224 kbps,
> Stereo, No Emphasis, No CRC
> $ v4l2-ctl -c audio_sampling_frequency=2
> $ v4l2-ctl --log-status | grep Audio:
>    cx18-0: Audio:  32 kHz, MPEG-1/2 Layer II, 224 kbps,
> Stereo, No Emphasis, No CRC
> $ v4l2-ctl -c audio_sampling_frequency=1
> $ v4l2-ctl --log-status | grep Audio:
>    cx18-0: Audio:  48 kHz, MPEG-1/2 Layer II, 224 kbps,
> Stereo, No Emphasis, No CRC
> 
> 
> Here's with using SVideo1: 
> 
> $ v4l2-ctl -i1
> Video input set to 1 (S-Video 1)
> $ v4l2-ctl --log-status | grep Audio:
>    cx18-0: Audio:  48 kHz, MPEG-1/2 Layer II, 224 kbps,
> Stereo, No Emphasis, No CRC
> $ v4l2-ctl -c audio_sampling_frequency=2
> $ v4l2-ctl --log-status | grep Audio:
>    cx18-0: Audio:  32 kHz, MPEG-1/2 Layer II, 224 kbps,
> Stereo, No Emphasis, No CRC
> 
> Regards,
> Andy
> 
> 
> 
> 
> ------------------------------
> 
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> End of ivtv-users Digest, Vol 42, Issue 9
> *****************************************