Quantcast Aspect Ratio problem with NTSC tapes? - digitalFAQ Forum
  #1  
03-04-2017, 11:46 PM
latreche34 latreche34 is offline
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I have HP LP2475W LCD Monitor used as a bench monitor for testing analog equipment, I have it hooked up to my JVC HR-S7600AM S-VHS VCR via S-Video cable, The VCR can play any VHS/S-VHS tape PAL/SECAM/NTSC, I have a problem with displaying NTSC video tapes, I get a wider than normal 4/3 aspect ratio, Is there anyway to correct this or I just have to live with it? I played with all the monitor setting nothing worked.
If it was a media player connected with HDMI/DVI/DisplayPort I would just assume that the TV is not compatible with the media player resolution, But this is an analog VCR connected with an analog connector, it is weird that the monitor is made for US market not Europe, I would think PAL video signal should be deformed not NTSC.
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  #2  
03-06-2017, 05:07 AM
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The PAL VCR outputs quasi NTSC signals. It's not 100% true, hence issues.

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03-06-2017, 12:03 PM
latreche34 latreche34 is offline
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Quote:
Originally Posted by lordsmurf View Post
The PAL VCR outputs quasi NTSC signals. It's not 100% true, hence issues.
I tried a US VCR and a satellite box and both gave a horizontally stretched picture.

And by the way, The multi standard VCR that I have outputs true NTSC it doesn't convert, It does have NTSC to PAL option and NTSC 4.43 only if selected, I never used those conversion modes as I don't need them, I always use PAL and NTSC 5.58, I just tried it with my LG OLED65E6P and it displays the aspect ratio properly -see attached-


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File Type: jpg IMG_1463.jpg (51.9 KB, 15 downloads)
File Type: jpg IMG_1457.jpg (62.6 KB, 12 downloads)
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  #4  
03-06-2017, 02:47 PM
sanlyn sanlyn is offline
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Thanks for the pics.

They look like 4:3 images to me. What's the problem?

By the way, the screen size ratio on that HP monitor is 1.6:1, not 16:9.
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03-06-2017, 03:37 PM
latreche34 latreche34 is offline
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Quote:
Originally Posted by sanlyn View Post
Thanks for the pics.

They look like 4:3 images to me. What's the problem?

By the way, the screen size ratio on that HP monitor is 1.6:1, not 16:9.
The problem is the HP monitor.
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03-06-2017, 03:43 PM
sanlyn sanlyn is offline
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Maybve I misread. Isn't this what you said:

Quote:
Originally Posted by latreche34 View Post
I get a wider than normal 4/3 aspect ratio
The images you posted are displayede as 4:3 on that monitor.

Last edited by sanlyn; 03-06-2017 at 04:17 PM.
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  #7  
03-06-2017, 06:34 PM
latreche34 latreche34 is offline
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sanlyn are you reading the posts or you are just looking at the pictures?
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03-06-2017, 06:56 PM
sanlyn sanlyn is offline
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Quote:
Originally Posted by latreche34 View Post
sanlyn are you reading the posts or you are just looking at the pictures?
Sure I'm looking at the pics. I take it you posted 2 pics of the HP monitor displaying a tape being played. Is that correct? Or is it another monitor?

If that monitor is your HP, then what I see in the pics is a 1680x1050 screen (1.6:1) displaying a 1400x1050 image (4:3). Get out a tape measure and measure it yourself. The displayed image is 4:3. Why? What do you think 4:3 is supposed to look like? a 4:3 is a rectangle with a 1.3333:1 aspect ratio and whose width is 1.333 times its height.

Last edited by sanlyn; 03-06-2017 at 07:11 PM.
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03-07-2017, 01:15 AM
latreche34 latreche34 is offline
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Quote:
Originally Posted by sanlyn View Post
Sure I'm looking at the pics. I take it you posted 2 pics of the HP monitor displaying a tape being played. Is that correct? Or is it another monitor?

If that monitor is your HP, then what I see in the pics is a 1680x1050 screen (1.6:1) displaying a 1400x1050 image (4:3). Get out a tape measure and measure it yourself. The displayed image is 4:3. Why? What do you think 4:3 is supposed to look like? a 4:3 is a rectangle with a 1.3333:1 aspect ratio and whose width is 1.333 times its height.
You still haven't read the posts, It's ok. I have given up on this issue anyway.
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03-07-2017, 04:45 AM
sanlyn sanlyn is offline
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And you didn't confirm my original question, even if you stated earlier you used a different monitor. What's so odd about your images is that you couldn't do the same thing with the LP monitor. Did you break your camera making the first pictures?

I guess it would be too much to ask whether you've seen the user guide for that LP monitor. The OSD scaling setup menu is on page 26. Manual attached.




If none of the above settings would work for you, then lordsmurf is correct about the monitor and the player not being compatible.


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File Type: png UserGuide.png (20.7 KB, 37 downloads)
Attached Files
File Type: pdf LP2275W_LP2475W_UserGuide.pdf (2.35 MB, 0 downloads)
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  #11  
03-07-2017, 02:26 PM
latreche34 latreche34 is offline
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The post with images is a respond to lordsmurf when he wrote my VCR doesn't output true NTSC, I posted pictures for him to show it is indeed working with an NTSC only TV, The pictures are not related to my problem at all, Neither the VCR and the TV in my bedroom.

And yes I tried all the setting in the monitor menu and none of them fixed the aspect ratio problem (picture being slightly stretched horizontally)
Once again not only the VCR any NTSC analog source via composite or s-video, PAL analog sources and digital sources don't have aspect ratio problem, And the monitor is made for US market not europe, Hope this clears up the confusion.
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  #12  
03-07-2017, 02:51 PM
sanlyn sanlyn is offline
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Thanks for clarifying.
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  #13  
03-11-2017, 03:28 AM
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No idea.
Monitors are not TVs. Sometimes weird things can happen.
How did you even output VHS to a VGA or DVI input? Does it also have s-video? Odd.

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  #14  
03-11-2017, 07:21 PM
NJRoadfan NJRoadfan is offline
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The HP LP2475W has component/S-Video/Composite ports in addition to PC standard ports (I happen to own one for that reason). I don't have any analog video devices at the moment, but it should be able to force 4:3 on analog sources. The monitor is 16:10 (1920x1200 native resolution), so the pillar bars on the sides will be smaller then on a 16:9 display.
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03-12-2017, 01:02 PM
sanlyn sanlyn is offline
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Quote:
Originally Posted by NJRoadfan View Post
The monitor is 16:10 (1920x1200 native resolution), so the pillar bars on the sides will be smaller then on a 16:9 display.
True. On a 16x10 panel, a 4:3 image will actually be larger than on a 16x9 panel of the same 1920 pixel width. Latreche34 might think that his HP is a 16xd9 panel because it has a 1920 pixel width. But it has a 1200 pixel height, not 1080.

On a 1920x1080 panel, a 4:3 image would be 1440x1080 pixels.
On a 1920x1200 panel, a 4:3 image would be 1600x1200 pixels, hence, taller and wider than on a 1920x1080 panel.

1920x1080 panel with a 4:3 image:


1920x1200 panel with a 4:3 image:


Attached Images
File Type: png panel 16x9 witrh 4x3 image.png (5.2 KB, 27 downloads)
File Type: png panel 16x10 witrh 4x3 image.png (4.9 KB, 27 downloads)
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  #16  
05-28-2018, 03:30 AM
latreche34 latreche34 is offline
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It's been a while but I recently solved my aspect ratio problem on the HP LP2475W monitor so I though I would update the thread, I bought this device from ebay for almost nothing, I connected the VCR to this box thru S-Video and from the box to the monitor via HDMI, It is actually a very convenient break out in case I need to connect something on the go since the monitor is mounted to the wall and it is a pain in the ass to access its connectors. I'm happy with the fix.
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