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Guest Message by DevFuse

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C41 picture quality


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24 replies to this topic

#1 OFFLINE   stvjohnsn

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Posted 27 June 2013 - 06:21 PM

My HR44 was just installed today and it looks and functions great on my 55" LCD.  

 

I put a C41 client in my theater with 106" projection screen and it seems to me that the PQ is a bit lower from the HR21 that it replaced.  Especially in the guide.  I made sure the client was in 1080i resolution but the guide font still looks a bit fuzzy.

 

Does the smaller client imply less horsepower and perhaps some cut corners in some of the processing?  If that's the case I'll probably swap the genie into the theater or replace the client with an HR24.



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#2 OFFLINE   peds48

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Posted 27 June 2013 - 07:55 PM

There should not be any picture difference
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#3 OFFLINE   NR4P

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Posted 27 June 2013 - 07:58 PM

Why don't you swap the C41 and HR44 locations?  See if you still have a PQ issue on the big screen.

If not, why not leave them swapped? Unless space is the issue.



#4 OFFLINE   kaminar

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Posted 27 June 2013 - 10:41 PM

My HR44 was just installed today and it looks and functions great on my 55" LCD.  

 

I put a C41 client in my theater with 106" projection screen and it seems to me that the PQ is a bit lower from the HR21 that it replaced.  Especially in the guide.  I made sure the client was in 1080i resolution but the guide font still looks a bit fuzzy.

 

Does the smaller client imply less horsepower and perhaps some cut corners in some of the processing?  If that's the case I'll probably swap the genie into the theater or replace the client with an HR24.

 

As Peds48 mentioned above, the PQ does not change. That's because the signal remains the same. Perhaps there is some new TV setting that must be adjusted. The Genie Mini does not have a built-in tuner. Instead, it is a remote unit of the Genie and relies on one of the Genie's tuners to provide the picture.

 

Of course, the PQ of a 1080i signal on a 106" vs 55" screen will be 1/4 the pixel density.

 

Good luck!

 

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#5 OFFLINE   stvjohnsn

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Posted 28 June 2013 - 03:11 PM

Thanks. I'll do a side by side comparison on the big screen this weekend hopefully.



#6 OFFLINE   TomCat

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Posted 01 July 2013 - 07:46 PM

What is not common to the picture directly off the Genie and off the client, is the decoding. The signal from the HDD is decoded locally for the Genie, but is sent to the client and decoded there separately.

 

That said, the decoder in each is probably identical, and the signal is digital from the Genie to the client, meaning there is no opportunity for degradation there.

 

It would be very difficult for a properly operating Genie and client to have differing PQ; usually if there is a difference it can be traced to what the different TVs do with that signal. This also applies to the difference sometimes seen between HR24's, which are RGB, and other DVRs, which are Y Cb Cr. When decoded, one signal is the same as the other except RBG is not matrixed (and matrixing is a non-destructive process). And HDMI handles both equally. But what might not be equal is how those two variants are handled inside the TV just after the HDMI receive chip.


Edited by TomCat, 01 July 2013 - 07:50 PM.

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#7 OFFLINE   haas

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Posted 02 July 2013 - 07:42 PM

Got my c41's also and don't think the pic quality is as good as the hr44 or the HD receiver I had before

#8 OFFLINE   Laxguy

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Posted 02 July 2013 - 07:47 PM

Could be a chimera! 


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#9 OFFLINE   peds48

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Posted 02 July 2013 - 09:14 PM

Got my c41's also and don't think the pic quality is as good as the hr44 or the HD receiver I had before

 

Must be in your mind.  Sometimes when you are set to find a difference you will find one where there is none


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#10 OFFLINE   RAD

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Posted 02 July 2013 - 09:19 PM

I have a HR34 and a C41 both connected to a 73" DLP set and don't notice a difference.

See post My Setup for configuration info.


#11 OFFLINE   CCarncross

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Posted 03 July 2013 - 06:13 AM

I have a HR34 and a C41 both connected to a 73" DLP set and don't notice a difference.

Because there shouldnt be...



#12 OFFLINE   haas

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Posted 03 July 2013 - 09:45 AM

So what is the correct setting in the C41? I have 480i, 720p and 1080i checked in a 720p/1080i Panasonic Plasma TV. Still swear there is a pic quality difference.



#13 OFFLINE   dennisj00

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Posted 03 July 2013 - 10:05 AM

I also have a 34 and C41 connected to the same Sony 60".   PQ is identical but there are certainly enough adjustments on the TV inputs to have radically different pictures.

 

Trying to compare PQ from different TVs in different rooms adds to the complexity.



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#14 OFFLINE   stvjohnsn

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Posted 03 July 2013 - 10:06 AM

I especially notice it in the guide.  The lettering just isn't as crisp as it once was.  Don't notice it at all on a smaller set.

 

I still haven't done my side-by-side test...but will soon hopefully.



#15 OFFLINE   haas

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Posted 03 July 2013 - 10:45 AM

I especially notice it in the guide.  The lettering just isn't as crisp as it once was.  Don't notice it at all on a smaller set.

 

I still haven't done my side-by-side test...but will soon hopefully.

I guess you and I are both seeing things  :grin:



#16 OFFLINE   Laxguy

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Posted 03 July 2013 - 11:37 AM

Is there a chance you're going to the Guide from an SD channel? 

 

In any event, hooking both boxes to the same TV and watching the same material is the way to get closest to the answer.


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#17 OFFLINE   Rtm

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Posted 03 July 2013 - 10:23 PM

Menu > Settings > Settings > Display > TV Resolution > Uncheck 480i and 480p



#18 OFFLINE   HoTat2

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Posted 03 July 2013 - 10:35 PM

Menu > Settings > Settings > Display > TV Resolution > Uncheck 480i and 480p

Then set the format to Pillar Box, otherwise its stretch-o-vision on the SD channels. 


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#19 OFFLINE   peds48

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Posted 04 July 2013 - 09:13 PM

Then set the format to Pillar Box, otherwise its stretch-o-vision on the SD channels. 

strange enough, some folks like it that way .... :nono2:


Here’s to the crazy ones.
The misfits. The rebels.
The the troublemakers.
The round pegs in the square holes.

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They’re not fond of rules, and they have no respect for the status quo.


Think Differently 

#20 OFFLINE   CDJohnson25

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Posted 04 July 2013 - 10:28 PM

Then set the format to Pillar Box, otherwise its stretch-o-vision on the SD channels. 

 

 

strange enough, some folks like it that way .... :nono2:

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