1080i vs. 1080p clearly explained - finally!

firsTraveler · 08-08-2006, 05:42 PM

http://blog.hometheatermag.com/geoffreymorrison/

That's by far the most compact and easy to understand explanation i've seen anywhere.

Sammy7777 · 08-08-2006, 06:09 PM

Quote:

Originally Posted by firsTraveler

http://blog.hometheatermag.com/geoffreymorrison/

That's by far the most compact and easy to understand explanation i've seen anywhere.

Thanks for that link. It does explain it well.

**rbinck** · 08-08-2006, 06:16 PM

Good info.

BobY · 08-08-2006, 08:49 PM

Even I agree, because it's the first article of it's kind that has said "there is no difference between 1080i and 1080p" *unless* your set doesn't de-interlace properly.

He even mentioned my favorite side issue, 3:3 (or other related) pull-down ratios for watching 24Fps without motion judder.

Just to be picky, though, I'd point out that not all non-CRT displays are progressive. The brand new Hitachi plasma displays actually *do* display in 1080i. There's no reason that a flat panel display of any type couldn't be designed for interlaced scan, but I'm not sure why one would want to--unless it's just to avoid the whole de-interlacing issue...

Nevada_MO_Guy · 08-08-2006, 10:43 PM

Quote:

Originally Posted by firsTraveler

http://blog.hometheatermag.com/geoffreymorrison/

That's by far the most compact and easy to understand explanation i've seen anywhere.

Thanks for that.

Razor05 · 08-08-2006, 10:54 PM

Yep, good post.

Testpattern · 08-10-2006, 03:34 PM

Nice...

Thanks for the time in passing this on.

britbiker · 08-11-2006, 09:28 AM

Hey I read that article you linked to about the 1080i or 1080p and that is EXACTLY the type of info people like us want. Why? Because I hate spending money on something that will basically show me no difference in quality.

You see, when the companies start pushing 1080p!!! Well, it's good to have inside info - don't get all excited. When companies push "built-in HDTV tuner!!" it's good to know that if you have a cable box (and always will) that's a worthless feature.

I have great eyes and a great ear - I'm not spending hundreds/thousands extra if I cannot literally hear or see the difference.

I was looking at a Westinghouse with 1080P and they got me all hyped up and then I saw that post and said - hell, it ain't all that.

Thanks!

stchman · 08-11-2006, 10:59 AM

Quote:

Originally Posted by firsTraveler

http://blog.hometheatermag.com/geoffreymorrison/

That's by far the most compact and easy to understand explanation i've seen anywhere.

I think that article just confirms my suspicions.

I have seen 1080p sets and they dont look any better than 720p sets. 720p sets look better than 1080i (CRT only) sets. Unless there is some specific made 1080p material, there is no difference.

I disagree with his term "refresh" when referring to a plasma. Refres is a term used for a CRT when the electron gun sweeps by the pixel and illuminating it. A plasma like an LCD has a microprocessor that gives each individual pixel instructions. The microprocessor then tells all the pixels what to do at the same time.

stchman · 08-11-2006, 11:07 AM

I also liked this portion:

Myth: A DVD and a good scaler will make an image just as good as HD DVD or Blu-ray
Nope. No way, no how. No matter how good your scaler is, it can not make an image as sharp as HD. This is either marketing fluff gone bad, or a lack of understand of what scaling can do. DVD is roughly 720x480. To blow this up, much like you would do with an image on your computer, on an HDTV you need to create 1,728,000 pixels (345,600 for 480p v. 2,073,600 for 1080p). Create, as in make up. The better scalers can do a good job making DVD sharper, but it can’t compete with either next-gen format which is HD natively.

So that basically says that upconversion is a complete waste of time. I have been saying this for some time!!!!! All fixed pixel TVs scale everything to their native res anyway!!!!!!

firsTraveler · 08-11-2006, 11:12 AM

Quote:

Originally Posted by britbiker

I was looking at a Westinghouse with 1080P and they got me all hyped up and then I saw that post and said - hell, it ain't all that.

Thanks!

Never choose a display JUST based on specs! Always see it with real content running.

fryet · 08-11-2006, 11:20 AM

The article also failed to mention that if you have a 1080i set, you are not seeing all of the frames of a 720p broadcast. 1080p does have some advantages:

1. display full content for both 1080i and 720p
2. Potential to avoid 3:2 pulldown if the set also has a 72 refresh rate option
3. Guaranteed not to have any problems deinterlacing a movie if the movie can be outputted as 1080p24.

hdrichtv · 08-11-2006, 04:50 PM

That's why I say--1080p, much ado about nothing. Let's all relax and enjoy our HD TV's.

bwclark · 08-19-2006, 11:36 AM

I'll be getting a 65" Panny PDP when released...soon?
Anyway, I also plan to have high def DVD...probably Panny's BD unit if Blu-Ray ever gets their problems fixed.

With seating distance of 8'-16', I want a resolution as fine as I can get.....basically 1080p! That coupled with the high res of the DVD, and I've got the best PQ available.

BobY · 08-19-2006, 12:11 PM

Wait, I'll say it before Hdrichtv does:

*There is no difference in resolution between 1080p and 1080i*

It's strictly a matter of how the information is sent. As long as your display de-interlaces 1080i properly, you will see no difference.

Now, if you want to avoid the trouble of determining whether a particular display de-interlaces 1080i properly (as the manufacturers are not going to tell you if they cheated so you must rely on independent testing), then get a display with 1080p input, which is what I'm going to do

08-08-2006, 05:42 PM	#1
firsTraveler High Definition is the definition of life. Join Date: Jan 2006 Posts: 456	1080i vs. 1080p clearly explained - finally! http://blog.hometheatermag.com/geoffreymorrison/ That's by far the most compact and easy to understand explanation i've seen anywhere.

08-08-2006, 06:16 PM	#3
rbinck Administrator Join Date: Apr 2004 Location: Katy, Texas Posts: 13,407	Good info. __________________ www.highdefinitionblog.com www.BlogOfHawaii.com

08-08-2006, 10:54 PM	#6
Razor05 HD = 65 beautiful inches Join Date: Jun 2005 Location: Canada Posts: 3,835	Yep, good post. __________________ Panasonic TH-65PZ850U Sony KDL37XBR6 Panasonic TH-37PX50U Cambridge Audio Azur 640R & 740C Paradigm Studio 60's, 20's, CC-590 & Seismic 12 Panasonic DMP-BD35 Toshiba HD-XA2 & A35 Motorola VIP1200 Monster HTFS1000, PB2100 Audio Authority 1154a MW2 LE & Halo3 LE Xbox 360 + HD-DVD GT: Razor59 Sony PS3 slim GT:Razor_59 Sony PSP - 180 - 55

08-11-2006, 09:28 AM	#8
britbiker NYC Time Warner Chick Join Date: Aug 2006 Location: Park Slope, Brooklyn Posts: 41	Great post and here's why... Hey I read that article you linked to about the 1080i or 1080p and that is EXACTLY the type of info people like us want. Why? Because I hate spending money on something that will basically show me no difference in quality. You see, when the companies start pushing 1080p!!! Well, it's good to have inside info - don't get all excited. When companies push "built-in HDTV tuner!!" it's good to know that if you have a cable box (and always will) that's a worthless feature. I have great eyes and a great ear - I'm not spending hundreds/thousands extra if I cannot literally hear or see the difference. I was looking at a Westinghouse with 1080P and they got me all hyped up and then I saw that post and said - hell, it ain't all that. Thanks!

08-11-2006, 11:07 AM	#10
stchman No HD? We have a problem. Join Date: Apr 2006 Location: St. Louis, MO Age: 43 Posts: 2,308	Upconversion DVD players are mostly BS. I also liked this portion: Myth: A DVD and a good scaler will make an image just as good as HD DVD or Blu-ray Nope. No way, no how. No matter how good your scaler is, it can not make an image as sharp as HD. This is either marketing fluff gone bad, or a lack of understand of what scaling can do. DVD is roughly 720x480. To blow this up, much like you would do with an image on your computer, on an HDTV you need to create 1,728,000 pixels (345,600 for 480p v. 2,073,600 for 1080p). Create, as in make up. The better scalers can do a good job making DVD sharper, but it can’t compete with either next-gen format which is HD natively. So that basically says that upconversion is a complete waste of time. I have been saying this for some time!!!!! All fixed pixel TVs scale everything to their native res anyway!!!!!! __________________ My HT setup: JVC HD-56GC87 HD-ILA LCoS HDTV DirecTV HR-21 HD DVR using HDMI Premier HD w/locals Sony DVPNS90V DVD Player using HDMI Pioneer VSX-D509S 5.1 Surround Receiver One For All Kameleon URC-9960 Remote Magnavox VHS VCR Radio Shack U-75R UHF Antenna for OTA

08-08-2006, 08:49 PM	#4
BobY What's all this, then?... Join Date: Jan 2006 Posts: 6,197	Even I agree, because it's the first article of it's kind that has said "there is no difference between 1080i and 1080p" unless your set doesn't de-interlace properly. He even mentioned my favorite side issue, 3:3 (or other related) pull-down ratios for watching 24Fps without motion judder. Just to be picky, though, I'd point out that not all non-CRT displays are progressive. The brand new Hitachi plasma displays actually do display in 1080i. There's no reason that a flat panel display of any type couldn't be designed for interlaced scan, but I'm not sure why one would want to--unless it's just to avoid the whole de-interlacing issue...

08-10-2006, 03:34 PM	#7
Testpattern A couch and an HDTV to go please. Join Date: Aug 2006 Posts: 11	Nice... Thanks for the time in passing this on.

08-11-2006, 11:20 AM	#12
fryet High Definition is the definition of life. Join Date: Mar 2005 Location: Bay Area, CA Age: 39 Posts: 652	The article also failed to mention that if you have a 1080i set, you are not seeing all of the frames of a 720p broadcast. 1080p does have some advantages: 1. display full content for both 1080i and 720p 2. Potential to avoid 3:2 pulldown if the set also has a 72 refresh rate option 3. Guaranteed not to have any problems deinterlacing a movie if the movie can be outputted as 1080p24.

08-11-2006, 04:50 PM	#13
hdrichtv High Definition is the definition of life. Join Date: Feb 2006 Posts: 175	1080i/1080p That's why I say--1080p, much ado about nothing. Let's all relax and enjoy our HD TV's.

08-19-2006, 11:36 AM	#14
bwclark My plasma is High Def. Join Date: Nov 2005 Posts: 8	I'll be getting a 65" Panny PDP when released...soon? Anyway, I also plan to have high def DVD...probably Panny's BD unit if Blu-Ray ever gets their problems fixed. With seating distance of 8'-16', I want a resolution as fine as I can get.....basically 1080p! That coupled with the high res of the DVD, and I've got the best PQ available. __________________ Make mine 1080p and Supersize it!!

08-19-2006, 12:11 PM	#15
BobY What's all this, then?... Join Date: Jan 2006 Posts: 6,197	Wait, I'll say it before Hdrichtv does: There is no difference in resolution between 1080p and 1080i It's strictly a matter of how the information is sent. As long as your display de-interlaces 1080i properly, you will see no difference. Now, if you want to avoid the trouble of determining whether a particular display de-interlaces 1080i properly (as the manufacturers are not going to tell you if they cheated so you must rely on independent testing), then get a display with 1080p input, which is what I'm going to do