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S-Video as primary input
http://forum.linhes.org/viewtopic.php?f=2&t=3035		 Page 1 of 1
Author:  xtopher [ Thu Dec 09, 2004 11:55 am ]
Post subject:  S-Video as primary input
Main Question: Has anyone used the S-video/ RCA audio combination on the PVR250?
Secondary Question: has anyone done a comparison of picture quality? In researching for this I found a list that placed the coax at the bottom of the list, and S-video at the top.

Logic: I use a serial connection to my Motorola Cable box, and the channel changing is done there. Why modulate the signal twice, and potentially loose quality.

The real reason: If a S-Video connection can be used, is there an inexpressive S-video/Audio card that can be used as a primary tuner. I could then retire my PVR250 to analog only recording.
Author:  DrGonzo [ Thu Dec 09, 2004 2:50 pm ]
Post subject: 
Call me crazy, but I believe S-Video is still analog, which negates the question about "why modulate twice". However, in answer to that, I don't want to have 3 cable boxes plugged into my backend and try to work out the jumble of serial cables or ir-Blasters... not to mention renting 3 boxes at $8 each. :P heheh

Gonz
Author:  ceenvee703 [ Thu Dec 09, 2004 3:48 pm ]
Post subject: 
S-video connection is still analog, so you're correct and not crazy DrGonzo.

When talking about connecting your equipment to your TV, coax is indeed worst, then composite (single yellow RCA jack), then S-video (round connector), then component (three RCA jacks), then digital (DVI, Firewire, HDMI, etc.).

But if you're talking connecting your cable TV to your MythTV box, if you don't need the cable box to do anything, you're better off going directly into your PVR-250 with coax cable. If you have digital cable, or the cable box is needed to unscramble pay channels, then you will want to connect the cable box to your 250 via composite or (preferably) S-video, and use an IR blaster to change the channel -- EDIT -- oops, you said you're controlling your cable box via serial, which is fine, no need for IR blaster.
Author:  xtopher [ Thu Dec 09, 2004 3:55 pm ]
Post subject: 
i think ceenvee703 understood my question best. I realize i could have been a little clearer with the analog. I meant analog cable as opposed to digital cable. so i would have my 250 recording channels 1->125 and my S-video recording all that the digital cable box will deliver.

I am trying to find a cheaper alternative to the pvr 250. and since i am not using the tuner for much right now i wanted to see if there was a way to remove it completely or reassign it to a more productive task than bringing in channel 3 or 4 all the time.
Author:  xtopher [ Mon Jan 24, 2005 11:28 am ]
Post subject: 
has anyone heard of using a CTX DVD Studio for an input?

it has S-video and RCA vid/audio in.


http://www.newegg.com/app/ViewProductDe ... 701&depa=0

what should i be looking for to see if it is compatable? Chipset? Drivers?
Author:  Liv2Cod [ Mon Jan 24, 2005 11:42 am ]
Post subject: 
The advantage of your PVR-250 is that it encodes the signal to MPEG2 in hardware rather than relying on software drivers to perform the task. It vastly reduces the load on your CPU and makes it possible to support more than one recorder card, and prevents skipping and jumping while recording and playing back simultaneously.

Perhaps you need TWO PVR-250 cards. You could use one to record the digital cable box S-Video feed and another to tune in analog cable channels directly. (Not a stockholder in Hauppage...)
Author:  xtopher [ Mon Jan 24, 2005 4:31 pm ]
Post subject: 
i realize that would be the simplest way to handle this but i am looking for a cheaper way...

since i dont use the tunner on the 250 i was looking for a svideo card that might have the mpeg encoder onboard. and i hope that would be cheaper. I could be wrong.
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