1080p vs 1080i

[statikcat]

I had a question that has been on my mind.

My HDtv does
480p,720p,1080i,1080p.

My dad's tv does
480p, 720i, 1080i

Will a 1080i HD broadcast via satellite be the same/similar quality on each of our tvs? Does the fact that my tv does 720p and 1080p (= higher resolution?) give it any advantage in 1080i? Thanks!

[Slapper]

Originally Posted by statikcat

I had a question that has been on my mind.

My HDtv does
480p,720p,1080i,1080p.

My dad's tv does
480p, 720i, 1080i

Will a 1080i HD broadcast via satellite be the same/similar quality on each of our tvs? Does the fact that my tv does 720p and 1080p (= higher resolution?) give it any advantage in 1080i? Thanks!

Depends on make and model a lot. But, if your TV properly deinterlaces to 1080p from 1080i then your TV should look better.

[oXweebleXo]

In theory a progressive scan 1080p is superior to interlaced scan 1080i. But most HDTV's like LCD TVs and Plasmas TVs can't physically display an interlaced picture... so what they actually do when when using an interlaced picture it is de-interlaced and convert it into a progressive scan picture! So the argument goes that there is no difference between 1080i and 1080p because your HDTV will convert the 1080i signal into a signal all through your HDMI cables

But complications with de-interlacing cause problems, some TVs don't do it correctly and you can end up with less resolution than you started with. The TV's refresh rate also help determine the quality of the HDTV. HD-DVD or Blu-ray Disc players are currently the only device on the market that supports a full 1080p. Current digital television broadcast systems and standards are not equipped for 1080p transmissions... they broadcast HDTV in 1080i.

The resolution of 1080p televisions have the sharpest and smoothest images possible. If you thought HDTV looked good before... You will be blow away with a 1080p television. And with a 1080p TV, you can take full advantage of the new DVD formats: HD-DVD and Blu-ray.

We recommend buying a 1080p ready HDTV. But remember one thing... don't ever believe the hype. It all comes down to what looks the best to your eyes.. So do the research online.. then get your ass out there to your local HDTV retailer and check out all your HDTV options.

Source: http://www.nurple.com/home-theater/1080p.html

[dbs2]

Originally Posted by oXweebleXo

In theory a progressive scan 1080p is superior to interlaced scan 1080i. But most HDTV's like LCD TVs and Plasmas TVs can't physically display an interlaced picture... so what they actually do when when using an interlaced picture it is de-interlaced and convert it into a progressive scan picture! So the argument goes that there is no difference between 1080i and 1080p because your HDTV will convert the 1080i signal into a signal all through your HDMI cables

But complications with de-interlacing cause problems, some TVs don't do it correctly and you can end up with less resolution than you started with. The TV's refresh rate also help determine the quality of the HDTV. HD-DVD or Blu-ray Disc players are currently the only device on the market that supports a full 1080p. Current digital television broadcast systems and standards are not equipped for 1080p transmissions... they broadcast HDTV in 1080i.

The resolution of 1080p televisions have the sharpest and smoothest images possible. If you thought HDTV looked good before... You will be blow away with a 1080p television. And with a 1080p TV, you can take full advantage of the new DVD formats: HD-DVD and Blu-ray.

We recommend buying a 1080p ready HDTV. But remember one thing... don't ever believe the hype. It all comes down to what looks the best to your eyes.. So do the research online.. then get your ass out there to your local HDTV retailer and check out all your HDTV options.

Source: http://www.nurple.com/home-theater/1080p.html

Sounds spot on that :thumsup: Exactly what i was gonna say......... well sort of

[welwynnick]

Originally Posted by statikcat

I had a question that has been on my mind.

My HDtv does
480p,720p,1080i,1080p.

My dad's tv does
480p, 720i, 1080i

Will a 1080i HD broadcast via satellite be the same/similar quality on each of our tvs? Does the fact that my tv does 720p and 1080p (= higher resolution?) give it any advantage in 1080i? Thanks!

What you are quoting there are input formats; we need to know the "output" format.

CRT displays can be progressive or interlaced, but digital displays are progressive.

What is the native resolution of your Dad's TV (the actual number of lines and pixels that the display can resolve)?

Nick

[Sonny]

I know my Pannys look beautiful even the 720/1080i ones's

[Robmx]

Taken for Futureshop.ca

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.

[cawgijoe]

I have a Sony KV-34XBR800 CRT TV with a native 1080i resolution.

The picture is fantastic whether it's OTA, Directv, or Blu-Ray from my PS3.

Depending upon your Dad's TV, I would not be concerned.

Is there an advantage to 1080p using OTA/Satellite/FIOS/Cable?.......probably not being that what's being broadcast is either 720p or 1080i. A 1080p display could possibly give you a slightly better picture, but depending on the display and other factors, most folks would not notice.

having said that....if I were to buy a TV today, I would go with a 1080p to take full advantage of the capabilities of Blu-Ray disc.

[Terjyn]

Originally Posted by statikcat

I had a question that has been on my mind.

My HDtv does
480p,720p,1080i,1080p.

My dad's tv does
480p, 720i, 1080i

Will a 1080i HD broadcast via satellite be the same/similar quality on each of our tvs? Does the fact that my tv does 720p and 1080p (= higher resolution?) give it any advantage in 1080i? Thanks!

To answer your actual question, if your Dad's TV does 1080i properly (not all older ones do), then there should be no difference between your TV and his given a 1080i input signal.

Unless your dad has some bizarre prototype, your dad's TV does 720p, not 720i.

[DavePS3]

I work with Sim2, Faroudja and Optoma. I've worked with CRT as well as CRT projectors and when it comes to pro-jo's, a great 1080i display will beat the Hell out of a crappy 1080p display.

It all comes down to the processing, filters and basic light engine. A $3000.00 1080p projector doesn't come close to a 12,000.00 1080i but you get what you pay for. Everyone thinks that because a display is 1080p, that you can do wonders with any display because 1080p is even across the board. Wrong. Cheap projectors are cheap for a reason. This is also true of LCD and plasma panels. The Pioneer Elite is expensive for a reason... the processing is much better and you pay for that.

People have to stop assuming any 1080p display product is automatically better than any 1080i. It's simply not true. I've seen too many God-awful LCD panels running 1080p from Blu-Ray and HD-DVD, no matter how well they're tweaked. They're usually cheap panels with little or no processing and while those same panels look worse on lower resolutions, put them up against a more expensive panel that's running 1080i and the 1080i looks much better.

1080p is like any other resolution, in that there are great and completely horrible panels rated the same way. Look at it this way... every car has four wheels and a windshield but it's the engine and drive-train that make the difference between a Lada and a Porsche. 1080p is NO different!!!

[cawgijoe]

Originally Posted by Terjyn

To answer your actual question, if your Dad's TV does 1080i properly (not all older ones do), then there should be no difference between your TV and his given a 1080i input signal.

Unless your dad has some bizarre prototype, your dad's TV does 720p, not 720i.

Amen!

[DavePS3]

By the way... too many people think that 720p is worse than 1080i. NO! 720p is the same as 1440i. It's just that some people see the small amount odifference... some do not. depends on the display. Progressive means twice as many lines as interlaced.

[Terjyn]

Originally Posted by DavePS3

By the way... too many people think that 720p is worse than 1080i. NO! 720p is the same as 1440i. It's just that some people see the small amount odifference... some do not. depends on the display. Progressive means twice as many lines as interlaced.

I'm sorry, but this is utterly ridiculous as stated.

Resolution, while not being the be all end all, DOES matter.

Furthermore, it really depends on the number of frames piped out. Interlaced can actually be better than progressive if the number of interlaced frames is more than double the number of progressive frames, again assuming the interlacing is done correctly.

For some reason people always make huge assumptions about picture quality vs. type. It is not clear-cut.

[Iceman_II]

Uhh.. I have to back dave on this one, while it may be a bit of a stretch to say that 720p is equivelent to 1440i, it is damn comparable (and quite positively for that matter) to 1080i... that is why ABC can advertise that they broadcast in the highest level of HD, and not get sued, even though they broadcast in 720p.

If nothing else, the 1080i needs to get processed yet again unless you are using a CRT, and the more you process a signal, the more you can muddy it up.

[Terjyn]

I agree. 720p is comparable to 1080i. It is not strictly superior, it is not strictly worse.

It is not "the same as" to 1440i. That is just a bizarre and silly thing to say. That's what I took exception to.

Yes, interlacing has to be processed, that's why I said "If interlacing is done properly".

The other part of my comment is that some 1080p is 24 frames per second, while some 1080i is done at 50 frames per second.

The latter gives you MORE FPS, yet some people will tell you that 1080i is *always* inferior to 1080p.

As I said the first time, it is not that clear-cut.

[Grisle]

I had heard they were working on 1440, but when will they start rolling TVs out with this resolution? Also will BD be able to output 1440?

[Teazle]

Originally Posted by Terjyn

I agree. 720p is comparable to 1080i. It is not strictly superior, it is not strictly worse.

It is not "the same as" to 1440i. That is just a bizarre and silly thing to say. That's what I took exception to.

Yes, interlacing has to be processed, that's why I said "If interlacing is done properly".

The other part of my comment is that some 1080p is 24 frames per second, while some 1080i is done at 50 frames per second.

The latter gives you MORE FPS, yet some people will tell you that 1080i is *always* inferior to 1080p.

As I said the first time, it is not that clear-cut.

Adding to the above, a 1080i signal (e.g. OTA HD broadcast) fed into a native 1080p display may look _worse_ than it does on a native 1080i display if the 1080p TV does not correctly de-interlace the frames. Apparently not too many 1080p sets do this properly (I know the top-of-line Pioneer plasmas do though). I think that maybe some high-end receivers can do the de-interlacing before sending on to the display but I'm not sure about that.

[Teazle]

Originally Posted by Grisle

I had heard they were working on 1440, but when will they start rolling TVs out with this resolution? Also will BD be able to output 1440?

Say you've got a 30" 2560x1600 computer monitor; that's a 16:10 aspect ratio but a 16:9 window (black bars top and bottom) would be 2560x1440. I imagine that if your computer (w/ Blu-ray drive) is powerful enough it could upscale your movies to 1440p.