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    Invelos Forums->DVD Profiler: Contribution Discussion Page: 1 2 3  Previous   Next
Contributing Accurate Aspect Ratios
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DVD Profiler Unlimited RegistrantStar ContributorKulju
Registered: March 14, 2007
Finland Posts: 2,337
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Quoting surfeur51:
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Quoting Kulju:
Quote:
Quoting surfeur51:
Quote:

So why not be EXACT in this case ?

OK, let's assume that the measured amount of pixels is 1920*1080. Now, could you please tell me how do you present that EXACTLY in DVDP? 

In dvdprofiler format x.xx : 1, the answer is 1.78 : 1 (the closest value in this format). You really needed the answer ?????

Yes, because you wrote EXACT with capitals. 1.78:1 is far from exact and that was my point. You almost always have to round the number anyway and 2 pixels can make a differense between 2.39:1 and 2.40:1 so why bother?
DVD Profiler Unlimited RegistrantStar ContributorRHo
Registered: March 13, 2007
Posts: 2,759
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Quoting SpikyCactus:
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The last line of pixels can sometimes be a bit faded (which RHo has given a nice example of above), but so far when I’ve done the relevant calculation using two slightly different figures to take this into account, it hasn’t been that critical in terms of selecting a ‘best-fit’ to the drop-down box options.  There are also some DVDs that can be a bit more of a mess around the edges, but again on the few where this has been an issue, the range of measurement possibilities hasn’t caused a problem in terms of determining which ‘drop-down’ box choice to use.  If it did I’d just go with what’s on the sleeve.

Absolutely!

But then I have seen users trying to change 1.85:1 into 1.78:1 only because their measurement has resulted to 1.81:1 which is so much closer to 1.78:1 even when the cover says 1.85:1 and there is clearly a small black border seen in the frame.

And some minority even wants to enter 1.81:1 into the profile, since their exact measurement clearly shows that we have to deal with a non standard aspect ratio.
DVD Profiler Unlimited RegistrantGrendell
One disc at a time...
Registered: May 8, 2007
United States Posts: 824
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Quoting RHo:
Quote:
And some minority even wants to enter 1.81:1 into the profile, since their exact measurement clearly shows that we have to deal with a non standard aspect ratio.


But.... that's what it is.
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DVD Profiler Unlimited RegistrantStar ContributorRHo
Registered: March 13, 2007
Posts: 2,759
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Quoting Grendell:
Quote:
Quoting RHo:
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And some minority even wants to enter 1.81:1 into the profile, since their exact measurement clearly shows that we have to deal with a non standard aspect ratio.

But.... that's what it is.

Actually, their measurement is not as exact as they believe. See my previous post with the image.
DVD Profiler Desktop and Mobile RegistrantStar ContributorTheMadMartian
Alien with an attitude
Registered: March 13, 2007
Reputation: Highest Rating
United States Posts: 13,202
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Quoting RHo:
Quote:
And some minority even wants to enter 1.81:1 into the profile, since their exact measurement clearly shows that we have to deal with a non standard aspect ratio.

I thought 1.81:1 was only used in still photography. 
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DVD Profiler Unlimited RegistrantStar Contributornorthbloke
Registered: March 15, 2007
Reputation: High Rating
United Kingdom Posts: 5,459
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Quoting bigdaddyhorse:
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I can never spot the diff in 2.35 to 2.4 even playing side by side

If I remember my industry history correctly, that's because there is no difference between the 2 ratios.
The ratio 2.35 was printed on the cover for DVDs (and videos) to take into account the overscan that a lot of TVs had at the time. Now that most TVs don't have overscan the more accurate 2.4 ratio is printed.
DVD Profiler Unlimited RegistrantGrendell
One disc at a time...
Registered: May 8, 2007
United States Posts: 824
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Quoting northbloke:
Quote:
Quoting bigdaddyhorse:
If I remember my industry history correctly, that's because there is no difference between the 2 ratios.
The ratio 2.35 was printed on the cover for DVDs (and videos) to take into account the overscan that a lot of TVs had at the time. Now that most TVs don't have overscan the more accurate 2.4 ratio is printed.


Source for this info? Most TV's I see, even recent models, still have around 5% overscan.
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DVD Profiler Unlimited RegistrantMark Harrison
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Registered: March 13, 2007
Reputation: Great Rating
United States Posts: 3,321
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Quoting Grendell:
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Most TV's I see, even recent models, still have around 5% overscan.


My new Panasonic (TC-P50S2) has 0 overscan.  It's awesome!
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DVD Profiler Unlimited Registrantnuoyaxin
prev. known as ya_shin
Registered: March 13, 2007
Reputation: High Rating
Taiwan, Province of China Posts: 3,436
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Mine is definitely in the 5% range

I have never seen small black bars when watching a 1:85:1 ratio film

Otherwise totally satisfied with my Sharp though...
Achim [諾亞信; Ya-Shin//Nuo], a German in Taiwan.
Registered: May 29, 2000 (at InterVocative)
DVD Profiler Unlimited RegistrantStar ContributorRHo
Registered: March 13, 2007
Posts: 2,759
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Even in the cinema you can't see the full image. Usually it is masked to get sharper and steadier edges.
 Last edited: by RHo
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