What's the ACTUAL difference between 1080i and 1080p??

[adnank77]

My Dell monitor can go up to 1080i on component and that's how I play my PS3 and BD Movies ..

Now What is the difference between 1080i and 1080p ???

In other words, what am I losing ??

I'm talking here about what the Actual HUMAN EYE can see .. Not technical differences only ..

[SamInNorthCakalakey]

I believe the only visual cue you'll see is on quick camera pans. Where a 1080p image will be more solid while a 1080i image will be less coherent, blurry. Not choppy but it will have some loss of detail.

I'm sure someone will correct me if I'm wrong.

[Stundra]

Originally Posted by adnank77

My Dell monitor can go up to 1080i on component and that's how I play my PS3 and BD Movies ..

Now What is the difference between 1080i and 1080p ???

In other words, what am I losing ??

I'm talking here about what the Actual HUMAN EYE can see .. Not technical differences only ..

I have exactly the same Dell monitor. As this monitor features HDCP throw your component cable to the good old things from the last millenium, get an HDMI-DVI cable and enjoy the resolution the PS3 and the monitor is meant for.

[adnank77]

I'm using the DVI-D for PC (1920x1200 Resuloution) ..

Beside, I read in many places that this monitor is limited to 720p on DVI .. the 1080i can be only obtained on Component .. please correct me if i'm wrong ..

[Iceman_II]

I don't think the choppyness is because of 1080i vs. 1080p, the choppyness in quick pans is the result of viewing 24fps source material at 30fps

[Gantrithor]

Originally Posted by adnank77

I'm talking here about what the Actual HUMAN EYE can see .. Not technical differences only ..

I don't think the human eye can really translate the differnce between 1080p and 720p until your screen size is +60", unless you sit closer that you are supposed to. Yet the difference will be apparent for your computer since you are most likely sitting on top of it. Not to mention the better quality transfer you have via HDMI and DVI versus component.

[dialog_gvf]

Originally Posted by adnank77

My Dell monitor can go up to 1080i on component and that's how I play my PS3 and BD Movies ..

Now What is the difference between 1080i and 1080p ???

In other words, what am I losing ??

I'm talking here about what the Actual HUMAN EYE can see .. Not technical differences only ..

Well, the technical difference is CRITICAL. A fixed panel must de-interlace the 1080i into something it can use. There two ways:

Wrong way (bob): Throw away every other field, and treat the signal like 540p and upscale that to 720p, 768p, 1080p etc. Easy. Cheap. No artifacts. You lose half the resolution! (Yes a LOT of monitors and TVs do this)

Right way (weave): Take two fields and merge them into one frame. The problem here is you need to properly detect 3:2 and 2:2 pull-down. And, there can possibly be inter-field motion for 1080i/60, so that has to be fixed (e.g. detect the motion and bob only the parts with inter-field motion). Not easy, cheap. Possible artifacts if not done right. But, full or near full resolution.

Gary

[Stundra]

Originally Posted by adnank77

I'm using the DVI-D for PC (1920x1200 Resuloution) ..

Beside, I read in many places that this monitor is limited to 720p on DVI .. the 1080i can be only obtained on Component .. please correct me if i'm wrong ..

If it were limited to 720p, you wouldn't have 1920x1200 resolution. I play the PC Version of Oblivion with the Dell, and Oblivion only supports the 1920x1080 widescreen mode.

But back to your question. As others also stated, the question is not so much 1080i vs 1080p (in your case). Even if component also would support 1080p, you would see a huge difference between component and DVI/HDMI.

[jon s]

about 540 lines... 1080i shows only 540 interlaced lines per frame, while 1080P shows all 1080 lines per frame...

[statikcat]

I dont think most 1080i monitors or tvs can display the 1920x1080 resolution of 1080p.

[CptGreedle]

the difference is simple...
but here are some links to help explain

http://hubpages.com/hub/interlaced-vs-progressive

http://www2.panasonic.com/webapp/wcs...tGroupId=24987

http://en.wikipedia.org/wiki/Interlace

http://en.wikipedia.org/wiki/Progressive_scan


Hope that helps a bit

[Shadowself]

Originally Posted by dialog_gvf

Well, the technical difference is CRITICAL. A fixed panel must de-interlace the 1080i into something it can use. There two ways:

Wrong way (bob): Throw away every other field, and treat the signal like 540p and upscale that to 720p, 768p, 1080p etc. Easy. Cheap. No artifacts. You lose half the resolution! (Yes a LOT of monitors and TVs do this)

Right way (weave): Take two fields and merge them into one frame. The problem here is you need to properly detect 3:2 and 2:2 pull-down. And, there can possibly be inter-field motion for 1080i/60, so that has to be fixed (e.g. detect the motion and bob only the parts with inter-field motion). Not easy, cheap. Possible artifacts if not done right. But, full or near full resolution.

Gary

as I've mentioned before is in compression. With the various compressors out there this can either be done on a field-by-field basis (for 1080i) or on a frame-by-frame basis (for either 1808i or 1080p). Field-by-field compression can result in smaller files, but decompression can lead to lots of nastiness (often easily visible on screen with the naked eye) if the fields are not properly ordered and synchronized upon decompression.

A similar thing can happen on compression when doing frame-by-frame compression if the compressor gets off one field and starts interlacing the wrong two frames (one from frame A and one from frame B). However, this latter problem is easy to check in the master before it goes out the door.

[statikcat]

Those links do not tend to touch on resolution much. Every LCD tv I have seen that has 1080i and NOT 1080p max resolution is that of 720p. So in this instance a big difference between 1080i and 1080p especially if you want to use the monitor also for a pc.

[Shadowself]

Originally Posted by jon s

about 540 lines... 1080i shows only 540 interlaced lines per frame, while 1080P shows all 1080 lines per frame...

Wrong.

1080i shows only 540 lines per field

1080i shows 1080 lines per frame

There are two fields per frame and the 540 lines per field are interlaced as the "i" implies to get the full 1080 lines in a frame.

[Deciazulado]

Yes, people keep forgeting that 1080i60 video is something very different from 1080p24 film sent as a1080i60 or 1080p60 signal to a 1080 display.

[ryan11]

HD television is displayed on your screen in pixels - the more pixels in a smaller area, the sharper the image (the number of pixels on the screen is referred to as the resolution, usually indicated in a vertical by horizontal format). A quick reference was developed by the industry to inform customers the kind of quality that modern displays are capable of.

The year of HD truly begins with 1080p. You may have heard of 1080i - the gold standard in high definition up until now - what's the difference between p and i anyway?

To Interlace or Not to Interlace...
1080i indicates an interlaced display whereas 1080p indicates a progressive display.

A 1080i interlaced display takes 1080 lines of resolution and breaks them down to two fields of 540 lines - one displayed after the other, fooling the eye into seeing 1080 lines of picture. This means that there will be roughly 1 million pixels onscreen at any given time.

A 1080p progressive display shows 1080 lines of resolution in each field. This doubles the resolution onscreen to over 2 million pixels - weighing in at a resoltuion of 1920x1080 pixels.

1080p - The Way to Be
With the dawn of the High Definition Optical Disc as well as High Definition gaming and more HD channels every day (HD source required) it's easy to see that you want the most resolution you can get. Don't settle for anything less than 1080p.

This is from the Future Shop web site. i hope it helps

[supersix4]

I think its far more a case when your going 50+ other than that 1080i probly would be fine

[dialog_gvf]

Originally Posted by Shadowself

as I've mentioned before is in compression. With the various compressors out there this can either be done on a field-by-field basis (for 1080i) or on a frame-by-frame basis (for either 1808i or 1080p). Field-by-field compression can result in smaller files, but decompression can lead to lots of nastiness (often easily visible on screen with the naked eye) if the fields are not properly ordered and synchronized upon decompression.

A similar thing can happen on compression when doing frame-by-frame compression if the compressor gets off one field and starts interlacing the wrong two frames (one from frame A and one from frame B). However, this latter problem is easy to check in the master before it goes out the door.

Yes, from a compression and output perspective they can be considered identical. What I was pointing out is that some displays handle 1080i/60 differently than 1080p/60.

They should result in the same picture, but due to lousy de-interlacing half the resolution can be lost.

Warner even messed up this way on some early HD DVD/BD. For example, Full Metal Jacket came from a 1080i master. They applied bob de-interlacing and ruined the resolution.

[Deciazulado]

that future shop thing doesn't know how this works.

there will be a 1 million pixel FIELD for 1/60th of a second (0.17 sec)
there will be a 2 million pixel FRAME in 1/30th of a second (0.33 sec)

on an interlaced display.




On a progresive display you'll get a 2 million pixel deinterlaced FRAME in each 1/60th of a second (0.17 sec)

[Deciazulado]

Originally Posted by dialog_gvf

They applied bob de-interlacing and ruined the resolution.

That's not what's happening. It's not bobbed.

the limited resolution (the jaggies you see) are in the horizontal direction.