Strange picture quality pls tell me - AVS Forum
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post #1 of 14 Old 03-15-2014, 07:23 AM - Thread Starter
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Hi I am experience problems with HD quality showing on my monitor. Try everything other players etc. In maybe most blu disc or mkv I see dots. is this normal? there should be none.

 

Most extreme example

 

Original blu ray disc Lara Croft

 

 

 

14 G Thor mkv

 

 

 

pls share your experience. I thougt maybe bad video card maybe bad LCD but sometimes its great picture and like in this example I can clearly see dots? doesnt make any sense to me.

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post #2 of 14 Old 03-15-2014, 08:43 AM
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Quote:
Originally Posted by joska1201 View Post

Hi I am experience problems with HD quality showing on my monitor. Try everything other players etc. In maybe most blu disc or mkv I see dots. is this normal? there should be none.

Most extreme example

Original blu ray disc Lara Croft

14 G Thor mkv

pls share your experience. I thougt maybe bad video card maybe bad LCD but sometimes its great picture and like in this example I can clearly see dots? doesnt make any sense to me.

The Lara Croft image has digital artifacts, since I do not have the BD I do not know if that is what is on disc or you downloaded a crushed rip from somewhere. As for the Thor image I cannot spot any 'noise' at all, if anything it is too clean for my tastes.
As for HD porn not having 'noise' since they are probably shot on digital cameras and brightly lit that is not surprising.
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post #3 of 14 Old 03-15-2014, 09:25 AM - Thread Starter
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hi thx for reply

 

Quote:

The Lara Croft image has digital artifacts

 

what does it mean digital artifacts? and of course this is extreme but what about the AVP as you can see screenshots on other thread why the noise is there?

 

Quote:
As for the Thor image I cannot spot any 'noise' at all

 

yeah exactly thats for comparison, with new HD movies I have no problems at all

 

ok I red about Digital Artifacts, ok I can try LC in mkv but as I say this is extreme I experience this pixelization - noise on older movies 2000+ on a basic

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post #4 of 14 Old 03-15-2014, 09:42 AM
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I'm not sure what you're talking about, but maybe what you're seeing is film grain?
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post #5 of 14 Old 03-15-2014, 10:11 AM - Thread Starter
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post #6 of 14 Old 03-15-2014, 10:12 AM - Thread Starter
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this is normal? this is film grain?

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post #7 of 14 Old 03-15-2014, 04:35 PM
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Try increasing your DNR(digital noise reduction) and see if it clears up.

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post #8 of 14 Old 03-15-2014, 08:32 PM
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Quote:
Originally Posted by joska1201 View Post

this is normal? this is picture grain?

It is hard to judge your AVP because it is not a 1080p image and I do not have the blu-ray but the random tiny 'spots' in the background are probably film grain.

This is unaltered (or very close to it) film grain.
Wizard of Oz:
http://images4.static-bluray.com/reviews/1892_2_1080p.jpg
Bigger Then Life:
http://images4.static-bluray.com/reviews/2580_12_1080p.jpg

Natural film grain is strongest in the blue colors and the grain density can vary according to the camera film make (65mm/70mm has the smallest natural grain in old films) and processes used like optical effects. Pretty much every feature film has film grain it, even ones shot on digital cameras often have fake film grain added (ie Revenge of the Sith) so they have a more film like look.

It gets complicated when it comes to blu-rays because sometimes (I would say often) whoever is in charge of the video transfer tries to reduce the film grain to an 'acceptable' home video level or a way too old scan of the film is used. We argue a lot here about wither a video transfer was done correctly here.

Digital Noise Reduction depends on wither you want an unaltered representation of what is on the blu-ray disc or not (I am in the purist unaltered camp) and if you can live with the digital artifacts the Digital Noise Reduction is guaranteed to create.
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post #9 of 14 Old 03-15-2014, 09:53 PM - Thread Starter
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ok thx you guys so I see its something common. You know from start I just cant figure it out how it can be possible , with HD I would expect super clear picture, now I realize that grain is there often. I know that Black Swan has fake grain.

 

 

this is good thread thread that push me little deeper. 

 

anyway theres nothing wrong with my hardware or software thats great :-).

 

I havent search it yet but I expect DNR could be done on software level? I would like to try... I tried some filters on VLC on PowerDVD 10 I cant find any. With VLC I cant find any suitable filter.

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post #10 of 14 Old 03-15-2014, 10:09 PM - Thread Starter
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ok PowerDVD 10 has smooth filter and PowerDVD 13 has even noise reduction, I can see the difference, case closed 

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post #11 of 14 Old 03-15-2014, 11:53 PM
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Quote:
Originally Posted by joska1201 View Post

ok thx you guys so I see its something common. You know from start I just cant figure it out how it can be possible , with HD I would expect super clear picture, now I realize that grain is there often. I know that Black Swan has fake grain.
It's not fake grain. It was shot on 16mm film, which produces a grainy picture. That's how it looked in theaters, that's how it looks on video. Excessive (well, more than what you'd get from a properly-exposed 35mm negative anyway) grain has been used for aesthetic effect for many decades.
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post #12 of 14 Old 03-16-2014, 12:06 AM
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Quote:
Originally Posted by wuther View Post

It gets complicated when it comes to blu-rays because sometimes (I would say often) whoever is in charge of the video transfer tries to reduce the film grain to an 'acceptable' home video level or a way too old scan of the film is used. We argue a lot here about wither a video transfer was done correctly here.
It probably goes the other way more often actually, tons of old transfers have obvious sharpening, which exaggerates grain.
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post #13 of 14 Old 03-16-2014, 12:23 AM
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Quote:
Originally Posted by joska1201 View Post

Hi I am experience problems with HD quality showing on my monitor. Try everything other players etc. In maybe most blu disc or mkv I see dots. is this normal? there should be none.

Most extreme example

Original blu ray disc Lara Croft





14 G Thor mkv





pls share your experience. I thougt maybe bad video card maybe bad LCD but sometimes its great picture and like in this example I can clearly see dots? doesnt make any sense to me.
Dots can be speckles on the master mainly on older Blu ray's. Species is a prime example, The print used to make the video may have wear and they just use it as is instead of restoring it.

"Bring out yer dead!".."Wait I'm not dead yet!"..(Sound Austrian here) "WRONG !!" (You know what happens next..)
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post #14 of 14 Old 03-16-2014, 12:26 AM
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Quote:
Originally Posted by joska1201 View Post





this is normal? this is film grain?
Hard to tell with this monitor I'm using, but what I'm seeing is over boosted contrast, try turning it down then tweak the brightness a bit.

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