CurtPalme.com Home Theater Forum

Kiev Savoie · Joined: 25 Oct 2007 Posts: 432

I have had my PS3/RTC2200/G70 setup running in 1080i almost exclusively for TV and movies. Recently my neighbor gave me a game to try which, like most PS3 games is 720p. My projector wants to squeeze 720p down so that I can not make it fill the entire screen like 1080i. My solution to this was to uncheck 720p as a display resoultion in the PS3 settings menu, so now I guess it is upscaling to 1080i. which is fine with me... unless there are situations where i would be stuck with 720p as my only option. If there is anyone out there who has dealt with this issue please chime in.
Thanks

**AnalogRocks**

Mark_A_W · Posted: Sun Dec 13, 2009 6:12 am Post subject:

With a CRT you really do need a video processor or a PC.

ecrabb · Posted: Sun Dec 13, 2009 3:23 pm Post subject:

Come on, Mark... It totally depends on your sources, and if you're sensitive to judder or not. I run 1080p/60, and very rarely ever see judder. I'm certainly not going to spend $2000 to get a scaler to run 72 or 96hz. If you run a normal set-top BD player (as opposed to a PS3), it'll lock and stay at 720p/1080i/1080p, and you're not sensitive to judder, you'll never have an issue.

The PS3 is just a pain in the ass because it's all over the place on resolution, depending on the source: BD, BD w/SD content, games, etc.

Kiev, I run PS3 games on my G70 (including 720p), and I've never had the problem you're talking about. Are you sure your raster is set up correctly? Your problem sounds like the problem I had when I set up the internal patterns to match the screen size. I read that was a bad idea, and once I pushed the internal pattern way out beyond the screen borders, then everything else worked much better. I assume it's a problem with pushing the active image area to close to the edge of the raster.

SC

CIR Engineering · Posted: Sun Dec 13, 2009 3:56 pm Post subject:

I agree with Mark that you really should run a VP with a CRT. It's not just about sources and their resolutions, it is a question of convenience. With a VP you input all your sources into it and the VP outputs a scan rate that is then consistent with ALL your sources. This way the timings are the same with all your sources and there are no new memories needed every time you change scan rates, sources, or add new devices. You can then also run 817x1920 at either 60 Hz or 72 Hz to eliminate judder or sharpen the image (817x9120 60Hz is sharper than 1080p 60 Hz for 2.35 movies).

Also, with a VP like a Lumagen or DVDO you get a built in pattern generator. It is highly convenient to have a pattern generator always connected to the CRT.

Used Lumagen VisionHDP series processors can be had on eBay these days for $200 ~ $500 and they are very capable. They are the cheapest processor that can do true IVTC and extract 72Hz from 60Hz sources like DVD. The VisionHDP also supports any custom timing you want and has a great pattern generator.

craigr

ecrabb · Posted: Sun Dec 13, 2009 4:08 pm Post subject:

Craig... I don't disagree with the essence of what you're saying - running 817x1920 @ 72 is great for sharpness and frame rate matching. But, convenience? Come on. So, I need to configure a memory and res/refresh for every aspect ratio, then switch those every time I switch from a 1.85 movie to a 2.40 movie, and back to a 16:9 game. Yeah, my wife will love that "convenience".

That said, I do have a processor - just not a standalone. I have the Reon HQV in my Integra prepro... So, I can force everything to one resolution, as long as it's 720p or 1080p.

Oh, with the PNGs on my PS3, I have a built-in pattern generator, too! Wink

So, does the $200-500 used Vision HDP take a 1080p/24psf input, and output cropped 1920x817/48 or 72? Can it do IVTC on 1080i?

SC

macgyver655 · Joined: 22 Aug 2007 Posts: 8508

Hmmmmmmm......... Very Happy

CIR Engineering · Posted: Sun Dec 13, 2009 7:10 pm Post subject:

Mark_A_W

cinema mad · Joined: 25 Nov 2009 Posts: 219

Yep, I had the same issue as mark discribes with my G70 running SD DVD Pal 50Hz scaled up to 720p @75Hz..

Once I set up A custom 720p timing (changed porches) with my vp50pro the G70 displays 720p @75Hz perfectly thus the need for A VP with the capability of setting up custom timings... 720P prob gives use the biggest headache without A means of runing A custom timing'/ changing porches...

Cheers...

CIR Engineering · Posted: Mon Dec 14, 2009 4:06 pm Post subject:

Basically 720p was a real PITA and wasn't ever really meant for CRT to display. That's why all the rear projection CRT's only display 1080i (or something similar).

craigr

draganm · Joined: 08 Mar 2006 Posts: 8990 Location: Colorado

ecrabb · Posted: Mon Dec 14, 2009 5:37 pm Post subject:

Weird. Why are you guys having so much trouble with 720p? I run 720p from the HTPC with standard HD timings, and I have no problem at all. Nor, do I have any problem with the PS3 at 720. What's the deal?

Axatax · Posted: Tue Dec 15, 2009 4:16 am Post subject:

**AnalogRocks** · Posted: Tue Dec 15, 2009 4:49 am Post subject:

Many of the PS3 games are 60Hz only. So even if you have your PS3 set to 720p/50 when the game fires up it will switch to 720p/60.

CIR Engineering · Posted: Tue Dec 15, 2009 2:48 pm Post subject:

dturco · Posted: Tue Dec 15, 2009 5:14 pm Post subject:

So I take it that's why when I am watching Star Trek TNG or Stargate they look the best in 720p { [45 60] [720x1280] } even though they both are 185:1 scope enhanced for HDTV? They both look terrible in 1080i [33 60] or 1080p [67 60] out of adjustment and stretched?

Zebu Fellenz · Joined: 21 Dec 2006 Posts: 2567

Spanky Ham · Joined: 22 Mar 2006 Posts: 5643 Location: Comedy Central

Mark_A_W · Posted: Tue Dec 15, 2009 9:14 pm Post subject: