Oppo UDP203’s 21x9 CIH Mode - Page 14 - AVS Forum | Home Theater Discussions And Reviews
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post #391 of 395 Old 01-13-2020, 12:53 PM
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Originally Posted by Vitus4K View Post
Also, I have to ask, why do you not just use the Oppo, and the Oppo only?

The Oppo will be good for a very long time, a very, very long time, plus it's better than the M2.



The Oppo can be repaired, officially.

On another note, it will probably be good until 8K becomes standard, those are many days ahead, no need to worry.

Take good care of your Oppo, and use it more than you do, that disc drive is barely used if I read your post correctly.

Sell the M2, get some money, modify and improve your Oppo, buy a new PSU, big improvement in picture and audio.

Beats your M2 any day.
The reason I'm using the x800m2 for playback is that it performs better than the 203 when in "Forced LLDV" mode (see this thread for more detail: https://www.avsforum.com/forum/465-h...rojectors.html)

Yes, the disc drive in my 203 is almost completely unused. It's only in my output chain for the CIH zoom functionality.
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post #392 of 395 Old 01-13-2020, 03:41 PM
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Originally Posted by bmandra View Post
Normal 16:9 4k pixels are 3840x2160, when you zoom this in the Oppo for CIH the image is downscaled to 2880x1620, when you then zoom this on a projector that has a 4096x2160 panel it's then upscaled to 3072x1728 (about 30% less pixels than the native image).

I have follow-up questions, of course...

Why does not the JVC zoom the picture all the way out to 4096, filling the width as per the description found in the manual?

Page 26 (Zoom)
http://www33.jvckenwood.com/pdfs/B5A-2809-01.pdf


By following your calculations, it only seems to zoom the very same 6,66% as from 3840 to 4096.

I was hoping to achieve a horizontal stretch, but I guess that's impossible.


Maybe Oppo CIH 1/2x zoom and Auto from JVC?

That should horizontally stretch a 16:9 title, if I read the description correctly.

Last edited by Vitus4K; 01-13-2020 at 03:44 PM.
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post #393 of 395 Old 01-15-2020, 08:32 AM
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Originally Posted by Vitus4K View Post
I have follow-up questions, of course...

Why does not the JVC zoom the picture all the way out to 4096, filling the width as per the description found in the manual?

Page 26 (Zoom)
http://www33.jvckenwood.com/pdfs/B5A-2809-01.pdf


By following your calculations, it only seems to zoom the very same 6,66% as from 3840 to 4096.

I was hoping to achieve a horizontal stretch, but I guess that's impossible.


Maybe Oppo CIH 1/2x zoom and Auto from JVC?

That should horizontally stretch a 16:9 title, if I read the description correctly.

It's because the Oppo still outputs a 3840x2160 image, the 2880x1620 16:9 downscaled content is centered within that larger image and letterboxed and pillarboxed. From the projectors perspective it is receiving a 3840x2160 image which it then upscales to 4096x2160 (cropping off a bit of the letterbox bars on the top and bottom). When this is done on a 2.35:1 screen the resulting 16:9 image will be the correct height to fit the screen vertically and have black bars (pillarboxed) on the left and right.

Again, normal 16:9 content coming out of the Oppo is 3840x2160. This will use 93.8% of the projectors available pixels (assuming a 4096x2160 panel). However if the projector is zoomed to the width of a 2.35:1 screen the top and bottom of this image will fall off the edges.

Normal letterboxed 2.35:1 content is still 3840x2160 but the actual image area is 3840x1634 = 70.9% (or 3840x1620 for a 2.37:1 aspect ratio, 70.3% of the projector) of available pixels on the projector. The projector can then upscale this image to 4096x2160 (again cropping the top and bottom), the resulting image area is then 4096x1734, or 80.7% of available pixels. This is the best use of pixels when projecting 2.35:1 content onto a 2.35:1 screen with a projector that has a 4096x2160 panel.

When the Oppo is zoomed to 16:9 and the display is 21:9 Cropped it will downscale the original content by 0.75 (resulting in a 2880x1620 image) then center that image in a 3840x2160 output. When the projector receives this image it is receiving a 3840x2160 signal which it then upscales to 4096x2160. This results in the original image that was downscaled by the Oppo to become 3072x1728, or 60% of the available pixels on the projectors panel. When the projector being used doesn't have lens memory to quickly zoom between 16:9 and 21:9 this is a reasonable alternative that sacrifices resolution for convenience.
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post #394 of 395 Old 01-15-2020, 08:36 AM
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Originally Posted by bmandra View Post
It's because the Oppo still outputs a 3840x2160 image, the 2880x1620 16:9 downscaled content is centered within that larger image and letterboxed and pillarboxed. From the projectors perspective it is receiving a 3840x2160 image which it then upscales to 4096x2160 (cropping off a bit of the letterbox bars on the top and bottom). When this is done on a 2.35:1 screen the resulting 16:9 image will be the correct height to fit the screen vertically and have black bars (pillarboxed) on the left and right.

Again, normal 16:9 content coming out of the Oppo is 3840x2160. This will use 93.8% of the projectors available pixels (assuming a 4096x2160 panel). However if the projector is zoomed to the width of a 2.35:1 screen the top and bottom of this image will fall off the edges.

Normal letterboxed 2.35:1 content is still 3840x2160 but the actual image area is 3840x1634 = 70.9% (or 3840x1620 for a 2.37:1 aspect ratio, 70.3% of the projector) of available pixels on the projector. The projector can then upscale this image to 4096x2160 (again cropping the top and bottom), the resulting image area is then 4096x1734, or 80.7% of available pixels. This is the best use of pixels when projecting 2.35:1 content onto a 2.35:1 screen with a projector that has a 4096x2160 panel.

When the Oppo is zoomed to 16:9 and the display is 21:9 Cropped it will downscale the original content by 0.75 (resulting in a 2880x1620 image) then center that image in a 3840x2160 output. When the projector receives this image it is receiving a 3840x2160 signal which it then upscales to 4096x2160. This results in the original image that was downscaled by the Oppo to become 3072x1728, or 60% of the available pixels on the projectors panel. When the projector being used doesn't have lens memory to quickly zoom between 16:9 and 21:9 this is a reasonable alternative that sacrifices resolution for convenience.
Perfect explanation, thank you.

It's the Oppo's way of still maintaining that 3840x2160 16:9 'container' that seemed to have confused me, you've now explained it thorougly though.


It's pretty obvious now, with the answer at hand.


Thanks again!
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post #395 of 395 Old 01-15-2020, 02:48 PM
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Quote:
Originally Posted by bmandra View Post
It's because the Oppo still outputs a 3840x2160 image, the 2880x1620 16:9 downscaled content is centered within that larger image and letterboxed and pillarboxed. From the projectors perspective it is receiving a 3840x2160 image which it then upscales to 4096x2160 (cropping off a bit of the letterbox bars on the top and bottom). When this is done on a 2.35:1 screen the resulting 16:9 image will be the correct height to fit the screen vertically and have black bars (pillarboxed) on the left and right.

Again, normal 16:9 content coming out of the Oppo is 3840x2160. This will use 93.8% of the projectors available pixels (assuming a 4096x2160 panel). However if the projector is zoomed to the width of a 2.35:1 screen the top and bottom of this image will fall off the edges.

Normal letterboxed 2.35:1 content is still 3840x2160 but the actual image area is 3840x1634 = 70.9% (or 3840x1620 for a 2.37:1 aspect ratio, 70.3% of the projector) of available pixels on the projector. The projector can then upscale this image to 4096x2160 (again cropping the top and bottom), the resulting image area is then 4096x1734, or 80.7% of available pixels. This is the best use of pixels when projecting 2.35:1 content onto a 2.35:1 screen with a projector that has a 4096x2160 panel.

When the Oppo is zoomed to 16:9 and the display is 21:9 Cropped it will downscale the original content by 0.75 (resulting in a 2880x1620 image) then center that image in a 3840x2160 output. When the projector receives this image it is receiving a 3840x2160 signal which it then upscales to 4096x2160. This results in the original image that was downscaled by the Oppo to become 3072x1728, or 60% of the available pixels on the projectors panel. When the projector being used doesn't have lens memory to quickly zoom between 16:9 and 21:9 this is a reasonable alternative that sacrifices resolution for convenience.
I believe you are only correct the second time. It won't fit when cropped mode is zoomed to full panel as the height will be off. You would have to adjust lens memory to make it fit and gain those extra pixels of resolution.
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