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Windows 7: jpg compression quality in windows 7 poorer than xp

17 May 2010   #31
FliGi7

XP / Win7 x64 Pro
 
 

My input on zooming is the product of the OP's original complaint about Windows 7 just displaying images poorly as compared to XP. So, I believed it was in the same vein of problems. From what has been posted, there appears to be very little difference, however I have been trying to make time to post what I'm seeing as well, which is an even further exacerbation of the comparison recently posted. I just have not had time as I recently wiped out my XP drive.

I don't blame anyone in here for not fully understanding what is being talked about as there is yet to be a clear comparison of what we're talking about. However, the problem does exist and we're simply searching for any answer as to why. The question isn't whether it matters or not, it's why and how it has changed from XP to Win 7, of which we still don't have an answer.


My System SpecsSystem Spec
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19 May 2010   #32
FliGi7

XP / Win7 x64 Pro
 
 

FINALLY... what everyone has been waiting for. Here is a case-in-point comparison of what I'm talking about:

Windows 7 zoom on a small(er) size image:



XP zoom on the same image at the same zoom:



Do you see how smooth the upscaling/zoom is on XP as compared to the Win 7 image that is severely pixelated and blocky, as if there is zero smoothing going on?
My System SpecsSystem Spec
19 May 2010   #33
fseal

Windows 7 x64 Ultimate
 
 

Well being a photographer. My opinion is that I do NOT want the OS "Smoothing out" images when I zoom in on them. I want to see the pixels.

They probably got a ton of complaints about the smoothed zoom.

Obviously no one solution is going to please everyone. Sounds like a good idea for a "preference".

Have you tried looking for maybe registry settings for the image viewer? I'd do it right now but am at work on my Ecccs Peee machine
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19 May 2010   #34
FliGi7

XP / Win7 x64 Pro
 
 

It even does the pixelation with 3rd party image viewers. I tried Fastone Image Viewer as well with no improvement.

The bottom line on this, though, is that I even notice it without zooming on both pictures and video, and first came across it when playing videos that were upscaled/zoomed/larger than native resolution when I was first trying out Win 7. So, even if it doesn't matter for pictures and could be considered a "feature" for photographers who like to see the pixels, the point is that it is an OS-level "problem" (or "preference" or whatever we'd like to term it) for the people who just want to see things smoothed like in XP rather than crappy and pixelated.
My System SpecsSystem Spec
19 May 2010   #35
zzz2496

Windows7 Ultimate 64bit
 
 

FliGi7, I use FastStone Image Viewer, I use Google Picasa image viewer, none of them inhibits what your screenshot shows. I'll post several screenshots when I'm back. In FastStone there's an option of preview resizer, in Google Picasa, it does the upscaling automatically. I'm interested as of why this happen. I have an XP box that does exactly like what your 7 did, everything when zoomed in is very pixelated.

If I were you, I'd look at the video driver first... at least my old XP box did that (few years back) because of defective display driver.

zzz2496
My System SpecsSystem Spec
20 May 2010   #36
FliGi7

XP / Win7 x64 Pro
 
 

Quote   Quote: Originally Posted by zzz2496 View Post
If I were you, I'd look at the video driver first... at least my old XP box did that (few years back) because of defective display driver.

zzz2496
I've tried many different video drivers for my card. From XP, to Vista, to beta 7 drivers, to now having the latest NVIDIA with a completely clean Win 7 install. Nothing changes this.
My System SpecsSystem Spec
20 May 2010   #37
FliGi7

XP / Win7 x64 Pro
 
 

I've come to the conclusion that this problem is most likely due to the new(er) EVR Video and Image Renderer released starting with Windows Vista and coming to Windows 7. Windows XP used VMR9 for displaying images and videos. So, I suppose the only way this could ever be fixed would be to revert back to the VMR9 engine for your image and video display applications. I guess I'll have to play around with things and see how to do that.

Here's some links of related info and posts about the same type problems with no solution:

http://msdn.microsoft.com/en-us/libr...8VS.85%29.aspx
http://www.comprousa.com/forums/view...hp?f=12&t=1032
http://forums.animesuki.com/showthread.php?t=77791
Media Player Classic Homecinema - VMR9 Issues
http://social.msdn.microsoft.com/For...a-130d6c05827d
http://shark007.net/forum/Thread-VMR-9-vs-VMR-7
My System SpecsSystem Spec
24 May 2010   #38
FliGi7

XP / Win7 x64 Pro
 
 

Can someone else download the file, zoom to the level that I did, and post a screenshot for comparison purposes?

http://gadgetquake.com/wp-content/up...in-300x260.jpg
My System SpecsSystem Spec
25 May 2010   #39
zzz2496

Windows7 Ultimate 64bit
 
 

Here you go, machine spec as listed in my profile..
jpg compression quality in windows 7 poorer than xp-screenshot.jpg
From top left to bottom right:
Top row = Firefox-->Media Player Classic HC-->Windows Photo Viewer
Bottom row = Picasa picture viewer --> Google chrome --> FastStone Image viewer

The ones that are "pixelated" is MPC-HC and Windows Photo Viewer.

zzz2496


My System SpecsSystem Spec
25 May 2010   #40
FliGi7

XP / Win7 x64 Pro
 
 

Thanks, zzz! This (possibly) confirms that a lot of people have the same problem/issue/"feature" I'm talking about but just don't notice it as much as I do for my uses. It is very comforting to have this sanity check to see that it isn't such a rarity, just something overlooked by most.

I'm gonna try installing mpc-hc, actually, and play around with the rendering options to see if they help (which could help me get a better idea of which settings would work better for video as well).
My System SpecsSystem Spec
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 jpg compression quality in windows 7 poorer than xp




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