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JorisS
Joined: 18 Jun 2007
Posts: 160
Location: Uppsala, Sweden
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| Posted: Fri Sep 10, 2010 3:20 pm Post subject: |
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Hehehe ben I will give your suggestion a try. Do you actively cut off top and bottom on 16:9 or is that simply what happens if you're playing it with e.g. 1920x817 resolution chosen? Or does the PC in that case adapt image to pixel height rather than width?
Going to see if I can get powerstrip setup with a 1920x817 resolution first. Any suggestions for timings and such?
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Fri Sep 10, 2010 5:10 pm Post subject: |
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you can set it to cut off a bit of top and bottom, or you can show it windowboxed. I allow for some cutoff...no issues with this scenario.
So far, in my testing...I prefer a progressive resolution and 47.952Hz refresh rate. I am doing 1280x600 or thereabouts. This allows a lower bandwidth for the projector and still looks fantastic (to me ).
I will try 1080i with 96z refresh and see what I think too...1920 x 800i.
Ben
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Fri Sep 10, 2010 5:28 pm Post subject: |
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| Spanky Ham wrote: | | A lot of flat panels have zoom functionality. You can check to see if you like it with one of those. I think you are losing to much of the picture, but what do I know. |
Are you referring to zooming as losing part of the picture? If so, how do you figure? Zooming for 2.35 content just removes the black bars.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Fri Sep 10, 2010 7:44 pm Post subject: |
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it would remove the bars, and a bit of picture information from each side...you can't zoom and keep everything without disrupting geometry.
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JorisS
Joined: 18 Jun 2007
Posts: 160
Location: Uppsala, Sweden
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| Posted: Fri Sep 10, 2010 8:22 pm Post subject: |
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It appears that windows 7 has some inbuilt feature for adding custom resolutions... added 1920x800 at 60Hz progressive, testing those 96Hz and such returned an error (either due to amp in between or due to moome hdmi card, not sure).
It's working alright it seems, just did a "quick & dirty" setup. Problem I have is something I don't know how it's called, but it's a bit like a glitch - in faster scenes, horizontal distortion occurs. I would best describe (and guess) this as being refresh rate related, somehow the PJ and the chosen rate do not match exactly so somehow it's not smooth, but screens are lost or so?
Hope somebody knows what I mean... this isn't new, had the same problem running default 1080i or p from the HTPC. Should I change the refresh rates? And would that work with the Moome card?
//Joris
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Fri Sep 10, 2010 8:35 pm Post subject: |
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| benareeno wrote: | | it would remove the bars, and a bit of picture information from each side...you can't zoom and keep everything without disrupting geometry. |
He said panel...so I am guessing he is referring to digital. You don't remove anything. You simply zoom it so the bars on top and bottom are just off the screen.
I guess we won't know until he returns regarding what he was talking about.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Fri Sep 10, 2010 8:48 pm Post subject: |
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| greg_mitch wrote: | | Spanky Ham wrote: | | A lot of flat panels have zoom functionality. You can check to see if you like it with one of those. I think you are losing to much of the picture, but what do I know. |
Are you referring to zooming as losing part of the picture? If so, how do you figure? | Quote: | | Zooming for 2.35 content just removes the black bars |
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No it zoom's the entire image . this is where test patterns come in handy. put up the DVE pattern that has the aspect ratios listed with the circle in the center. if you zoom it it will lose about 10%, 5 % on each side. But that also depends on the Display.
Athanasios
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sat Sep 11, 2010 12:24 am Post subject: |
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ehm if you go with a higher pixelclock then 165 mhz the picture crops when using dvi out to hdmi.
the distortion will always be there with the higher pixelclock but is only noticeable with fast moving scenes.
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Sat Sep 11, 2010 12:43 am Post subject: |
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| Nashou66 wrote: | | greg_mitch wrote: | | Spanky Ham wrote: | | A lot of flat panels have zoom functionality. You can check to see if you like it with one of those. I think you are losing to much of the picture, but what do I know. |
Are you referring to zooming as losing part of the picture? If so, how do you figure? | Quote: | | Zooming for 2.35 content just removes the black bars |
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No it zoom's the entire image . this is where test patterns come in handy. put up the DVE pattern that has the aspect ratios listed with the circle in the center. if you zoom it it will lose about 10%, 5 % on each side. But that also depends on the Display.
Athanasios |
On a digital display?! I had no idea.
I always figured it was just an optical change just like a zoom lens. You still got full panel coverage.
So people with Panasonic AE4000's with the auto lens memory function are losing image when they watch cinemascope features?? It doesn't seem like people would accept that. I guess I should look harder at an A-lens now.
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Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
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| Posted: Sat Sep 11, 2010 2:11 am Post subject: |
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I was referring to Ben using 16x9 on a 2.35 by cropping off the top and bottom. It can be done on flat panels with zoom function or at least the ones I have played with. Ironically, I was doing it with Dexter on my friends tele. It zoomed a little to much and cut off part of the top and bottom. I didn't like it, as it was chopping off heads and such. My advice is just play 16x9 inside a 2.35 image and mask the sides.
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JorisS
Joined: 18 Jun 2007
Posts: 160
Location: Uppsala, Sweden
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| Posted: Sat Sep 11, 2010 10:20 am Post subject: |
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| Nashou66 wrote: | That sounds PC related, the Processor isnt powerful enough. I had this same exact problem as you describe but with my Lumagen HDQ when I ran only 1920x800@72 hz and turned on the on screen menu. it looks like really bad judder right?
Athanasios |
Yes I guess judder is the proper word for it... there are no artificial lines or anything popping into existence, however if one were to freeze frame it would show something like as if the image were cut horizontally then both parts put back together but not perfectly aligning... or so 
The mrs doesn't notice it, I do.
The HTPC is based on this motherboard:
http://pden.zotac.com/index.php?page=shop.product_details&flypage=flypage_images.tpl&product_id=169&category_id=15&option=com_virtuemart&Itemid=1
I thought it should manage 1080p easily enough, it's partly what it's meant for?
It might be software related though. Running VLC the image get's extremely distorted (pixelated) and freezes alot - this is a problem with the program, according to some google searching. Currently I'm using Media Player Classic - Home Cinema, it plays fine with the exception of this judder, if that's what it is. I would like to go with Media Center so as to have a nice interface, but it won't play .mkv files without first installing codec packs and adjusting stuff - haven't gotten around to do so yet. It might solve the judder problem though...
Will read up on it some more - you don't think it's a problem with the refresh rate somehow being slightly mismatched so some screens are lost in fast scenes?
Cheers
//Joris
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Sat Sep 11, 2010 2:49 pm Post subject: |
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Playing MKVs in Media Center in Windows 7 is really easy and convenient. You just need to install the Shark007 pack and be done. It takes care of all the rest for you.
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JorisS
Joined: 18 Jun 2007
Posts: 160
Location: Uppsala, Sweden
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| Posted: Sat Sep 11, 2010 2:56 pm Post subject: |
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Cheers will give that a go as well then 
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Sat Sep 11, 2010 6:09 pm Post subject: |
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if using an htpc why not use VGA right to the projector? I would take hdmi out of the equation...and run a proper refresh rate with reclock (47.952 or 71.928) but always keep in mind the stress on your projector!
Ok...the zooming 16:9 on a 2.35 screen is absolutely not applicable to flat screen tv's...unless the tv is 2.35:1 aspect ratio! What in the hell are you talking about here?? I think some of you still have a very limited understanding in this realm...it's not complicated. You cannot zoom 2.35:1 on a 16:9 tv WITHOUT losing information from each side. You CAN zoom 16:9 on a 2.35 screen but you will lose information from top and bottom....it's quite simple.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Sat Sep 11, 2010 6:16 pm Post subject: |
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| benareeno wrote: | if using an htpc why not use VGA right to the projector? I would take hdmi out of the equation...and run a proper refresh rate with reclock (47.952 or 71.928) but always keep in mind the stress on your projector!
Ok...the zooming 16:9 on a 2.35 screen is absolutely not applicable to flat screen tv's...unless the tv is 2.35:1 aspect ratio! What in the hell are you talking about here?? I think some of you still have a very limited understanding in this realm...it's not complicated. You cannot zoom 2.35:1 on a 16:9 tv WITHOUT losing information from each side. You CAN zoom 16:9 on a 2.35 screen but you will lose information from top and bottom....it's quite simple. |
Now that makes sense!!! I thing we all thought you meant on a 16x9 screen Ben.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
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| Posted: Sat Sep 11, 2010 6:37 pm Post subject: |
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| benareeno wrote: | | You CAN zoom 16:9 on a 2.35 screen but you will lose information from top and bottom....it's quite simple. |
Yes and that is what I was referring to. I just zoomed 16x9 on my flat panel to cut off the top and bottom. I don't particularly like it.
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Sat Sep 11, 2010 6:49 pm Post subject: |
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is your flat pane 2.35:1 aspect ratio?? If not, then what the hell are you talking about here?
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greg_mitch
Joined: 03 May 2006
Posts: 5320
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| Posted: Sat Sep 11, 2010 6:53 pm Post subject: |
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| benareeno wrote: | if using an htpc why not use VGA right to the projector? I would take hdmi out of the equation...and run a proper refresh rate with reclock (47.952 or 71.928) but always keep in mind the stress on your projector!
Ok...the zooming 16:9 on a 2.35 screen is absolutely not applicable to flat screen tv's...unless the tv is 2.35:1 aspect ratio! What in the hell are you talking about here?? I think some of you still have a very limited understanding in this realm...it's not complicated. You cannot zoom 2.35:1 on a 16:9 tv WITHOUT losing information from each side. You CAN zoom 16:9 on a 2.35 screen but you will lose information from top and bottom....it's quite simple. |
Who the heck was talking about a 16x9 TV?
We are talking about projectors, no? You don't zoom 16x9...you zoom 2.35 to maintain CIH on a 2.35 screen. Isn't that what the original post was about? Getting a 2.35 image on a 2.35 screen but getting rid of the black bars.
For a 16x9 digital projector with lens zoom, I am under the impression that you don't lose any picture information if you setup a CIH 2.35 screen (zoom out for 16x9 and you lose width but maintain all picture information, zoom in for 2.35 on screen pushing black bars off screen).
Who is confused.? Is it me?
Obviously on a 16x9 flat panel TV if you zoom to make 2.35 fit the height you will lose information...but who the heck does that??
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