On Fri, Jul 11, 2008 at 10:02 PM, Jim Miller <<a href="mailto:mythgroups@castinghobby.com">mythgroups@castinghobby.com</a>> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div></div><div class="Wj3C7c">Jerry Rubinow wrote:<br>
> I've noticed that when playing back (at least some) shows recorded<br>
> from TNT (e.g. Law & Order, Cold Case) and Game Show Network the sound<br>
> is distorted, sounding as if it's overmodulated. I'm not sure how<br>
> recently it started. I'm recording using a PVR-500 via s-video +<br>
> analog sound inputs. Source is verizon FIOS, digital tier of<br>
> channels. Recording from USA, another channel in the same range<br>
> yields normal sound. It is going through the exact same Myth input.<br>
> I'm using 0.21-fixes.<br>
><br>
> I've tried messing around with the configuration settings on the<br>
> General sound page. I tried changing the dsp, AC3 passthrough,<br>
> aggressive sound buffering, and a couple of other settings, but<br>
> nothing seems to affect the problem (although, of course, certain<br>
> settings cause me to get no sound at all).<br>
><br>
> Any suggestions?<br>
><br>
> Thanks,<br>
> Jerry<br>
</div></div>> ------------------------------------------------------------------------<br>
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<div class="Ih2E3d">><br>
I've had similar problems in the past with PVR-500's. For me the<br>
problem was firmware related. With certain IVTV firmware's when used<br>
with certain revisions of the PVR-150/500 cards the sound would get the<br>
overmodulated sound that you describe. It would not go away with a<br>
reboot. Resetting the firmare required a shutdown, leave power off for<br>
at least 30 seconds to clear the cards registers, then power back on.<br>
I'm not very familiar with FIOS, but I assume with FIOS you have a set<br>
top box that you are feeding into one or more of the s-video input(s) of<br>
the PVR-500? Are you feeding two STB's into the PVR-500? Are the<br>
distorted recordings all being recorded with one of the "tuners", with<br>
the clear recordings being recorded by the other? If you are only using<br>
one input then it is unlikely to be the firmware issue, but if it is<br>
related to one of the tuners and not the other (not really channel<br>
specific but input specific) then I suspect that it is firmware related.<br>
-Jim<br>
</div></blockquote><div><br>Jim, I tried to reply to your private message the other day, but it bounced. Here's what I said:<br><br>Thanks for the reply Jim, and for the info. Yes, you guessed
correctly - I have a STB whose s-video out feeds into the PVR-500. The
coax inputs on the PVR receive straight analog from the raw coax (well
not anymore, since Verizon turned off their analog distribution about
two weeks ago). The s-video is only going thru the same one tuner
always. But some of the channels were being recorded fine by that same
tuner, while other were sounding overmodulated. I don't know if the
second tuner exhibits the same problem.<br>
<br>I just got a new piece of data though. My wife just decided to
inform me that the Game Show Network was no longer overmodulating
earlier today. I don't know if TNT is - the tv's off for the evening
already. I'll have to check it out tomorrow. Potentially it was a
Verizon issue. <br><br>----------------------<br><br>Since I wrote that, today TNT is not having the problem anymore, so I have to assume it was a problem with the provider, since I haven't rebooted or restarted Myth or changed any setup options since then.<br>
<br>-Jerry<br></div></div>