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post #11 of 20 Old 06-23-09, 06:24 PM
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Re: Why CIH Scaling Works

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John Simpson wrote: View Post
As for my progress on the new house, planning application for a more modest home has just gone into Council after ditching "Wychwood" (the wife and I split up sadly)... but no way am I giving up my dedicated HT room!

Cheers,
John
Hi John,

Sorry to hear that Wychwood is not going ahead..and of your separation..
Hopefully you'll finish up with a nice theatre out of all this..

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post #12 of 20 Old 06-26-09, 09:42 PM
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Re: Why CIH Scaling Works

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Blaser wrote: View Post
Indeed movies like dark knight are not friends with CIH
Hopefully they are very seldom.
I don't have a CIH setup yet - still in construction (getting close though). I haven't heard/seen... why was Dark Knight not CIH friendly? What did they do to it?
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post #13 of 20 Old 06-29-09, 06:31 PM
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Re: Why CIH Scaling Works

Bruce,

I think what Blaser is talking about is that the AR changes from 2.40 to 1.78:1 briefly during the Blu-ray version of "The Dark Knight"..
I believe this also happens with some other discs as well..
Why or for what reason..I have no idea..

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post #14 of 20 Old 06-29-09, 06:40 PM
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Re: Why CIH Scaling Works

It's a result of the film being shown in Imax format: there are some landscape shots (for example, the scene of Gotham at night) that the director thought would be best to show without letterbox bars, to give the illusion of "full screen". So you'll find the presentation jumps between 2.4 and 1.78, depending on what's on screen.

Not good for a CIH setup, as you're seeing less than you're supposed to (ie: the top and bottom are cropped)!
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post #15 of 20 Old 06-30-09, 02:40 AM
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Re: Why CIH Scaling Works

Yes Prof! That's exactly what I meant

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Yamaha RX-V2500, Wharfedale Diamond 9.6 Fronts, Wharfedale Diamond CM Center, Diamond DFS Surround and rear, Behringer FBQ 2496, Dual RL-P18s 625L LLTs, Dual TA-2400 Pro (2 * 2000 W Amp), Samsung HD870 DVD player, Carada BW 16:9 106" screen, Epson TW-2000, 60 Gb PS3
Important HT proverbs:
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- "you can never have too big a screen" (talking about still pictures)


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post #16 of 20 Old 06-30-09, 07:58 PM
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Re: Why CIH Scaling Works

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John Simpson wrote: View Post
It's a result of the film being shown in Imax format: there are some landscape shots (for example, the scene of Gotham at night) that the director thought would be best to show without letterbox bars, to give the illusion of "full screen". So you'll find the presentation jumps between 2.4 and 1.78, depending on what's on screen.

Not good for a CIH setup, as you're seeing less than you're supposed to (ie: the top and bottom are cropped)!
Great idea!!..for 16:9 projection or TV's..but not for us CIH guys..
Again,another example of catering for the mass market..

I have a copy of that movie on DVD and didn't notice any AR change..Is it only the Blu-ray version that does this?

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post #17 of 20 Old 06-30-09, 09:26 PM
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Re: Why CIH Scaling Works

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Is it only the Blu-ray version that does this?
Yeah, must be. In a way, it's a brilliant idea... imagine a 16:9 screen setup which suddenly loses the top and bottom black bars to show an enormous vista (no, not the software). But it's definitely no friend to CIH.
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post #18 of 20 Old 07-02-09, 02:41 PM
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Re: Why CIH Scaling Works

It sure does this on BD...

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Yamaha RX-V2500, Wharfedale Diamond 9.6 Fronts, Wharfedale Diamond CM Center, Diamond DFS Surround and rear, Behringer FBQ 2496, Dual RL-P18s 625L LLTs, Dual TA-2400 Pro (2 * 2000 W Amp), Samsung HD870 DVD player, Carada BW 16:9 106" screen, Epson TW-2000, 60 Gb PS3
Important HT proverbs:
- "You can never have too much headroom" (talking about bass)
- "you can never have too big a screen" (talking about still pictures)


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post #19 of 20 Old 07-02-09, 07:17 PM
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Re: Why CIH Scaling Works

I'm still going to get that movie on Blu-ray though..
After seeing a good quality Blu-ray movie on my new HD projector and Blu-ray player just recently..I don't think I could ever buy another DVD!!..WOW!! Absolutely FANTASTIC image on my CIH..
Couldn't believe it could be SOOO!! much better..

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post #20 of 20 Old 03-02-11, 06:37 AM Thread Starter
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Re: Why CIH Scaling Works

Rather than start a new thread, i thought I would just add it to this one.

To keep it really simple, lets assume the 1920 x 1080 format is used and refer to the image at the bottom of the post.

* OK so Bottom Left is the original image and is what the final projected image will also look like.
* Top Left is the image letter boxed on video (BD) to fit within the 1920 x 1080 pixels. The actual image is now some 1920 x 810 pixels with the remaining 270 wasted on black bars.
* Moving on to the Top Right, when the image is Scaled for CIH (Vertical Stretch) it is remapped as if to fit a 1920 x 1440 display. Because our HD displays are 1920 x 1080, the top and bottom sections can not be displayed. They are cut off and there goes the black bars. The image now looks like the one at Bottom Right.
* After optical expansion from an anamorphic lens, the image now looks like the Bottom Left.
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Why CIH Scaling Works-scaling.jpg  

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