> Date: Thu, 12 Feb 2009 17:11:08 -0800 (PST) > From: k niemand <[email protected]> > Subject: [ivtv-users] CX18: Black and white horizontal line > with > HVR-1600 > To: [email protected] > From: Andy Walls <[email protected]> > Subject: Re: [ivtv-users] CX18: Black and white horizontal > line with > HVR-1600 > To: [email protected], User discussion about IVTV > <[email protected]> > Message-ID: > <[email protected]> > 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 <[email protected]> > Subject: Re: [ivtv-users] CX18 audio > To: User discussion about IVTV > <[email protected]> > Message-ID: > <[email protected]> > 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 > > > > > ------------------------------ > > _______________________________________________ > ivtv-users mailing list > [email protected] > http://ivtvdriver.org/mailman/listinfo/ivtv-users > > End of ivtv-users Digest, Vol 42, Issue 9 > ***************************************** _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
