[mythtv-users] Quality of recordings degraded

[Bob Cottingham]

Joseph A. Caputo said:
> On Wednesday 07 July 2004 10:43, John OKeefe wrote:
> 
>> I just got my MythTV setup working and it has been up and running for
>> almost two days. The recordings have been great so far. Then this morning
>> it recorded a show and the quality of the recordings has degraded. This
>> also happens in LiveTV. Specifically I am getting some slight noise and
>> some transparent blue vertical lines in the picture. I have watched the
>> shows on the T.V. without the MythTV box and they look fine so I know it
>> is not the signal from that Satellite receiver.
>> 
>> I was looking at the recording profiles last night but I am pretty
>> sure I did not change any settings. Could changing the recording profiles
>> i.e. bit rate or recording type affect the recording/LiveTV like I
>> mentioned above?
>> 
>> Any thoughts on what is causing this?
>> 
>> 
>> Is the box getting to hot and that is affecting the picture? Is that
>> something that typically happens? I am not at home right now so I am 
>> unable to check the box to see if it is hot or not.
>> 
>> Here are my system specs:
>> KnoppMyth R4V4
>> P4 1.4 Ghz
>> PVR-250
>> 120GB Maxtor 7,200 RPM hard drive.
>> 512mb ram
>> AC97 On board sound.
>> Elite P4VXMS motherboard.
>> 
>> 
>> Thank you for any help in advance!
> 
> Shut down your box, power off, and reboot.  (Note: you must cycle power,
> not just warm reboot).
> 
> This is a known problem with ivtv-driven cards (PVR-x50, M-179).  Not
> sure if it's the firmware or the driver.

I get this once in a while with my PVR-250 as well.  It's a grounding problem from what I understand.  Simply disconnect the coax cable and then reconnect.  Instantly fixed.  While rebooting will work too, there's no need in my experience to go to such lengths.

Bob C