How discernable is 1080p over 1080i ?

[Amon37]

I can tell you this from my Point of view. Yesterday I replaced a Sony rear-projection 50' 1080i set with the sony 50' SXRD Rear projection 1080P set.

Exact same size TV, in the exact same location, exact same veiwing distance (about 7ft) the only change was the 1080P and the SXRD vs Wega engine only. I rewatched trailers and a blu-ray and could tell the difference on the immediatley.

[dobyblue]

If the interlacing is done properly then you should not notice a difference. The 1080 lines should be put back from interlaced into a deinterlaced 1080p picture.

The biggest difference is when you watch 1080i on a 720p/1080i set as it doesn't have the horizontal lines (usually around 760) inorder to correctly display a 1080i signal.

[takezo]

Originally Posted by JimPullan

Thanks so much for the detailed explanation. It was certainly more than what I expected. You sure did your homework on this. Again, thanks!

Jim

Also note that 1080p tvs are at the moment, only availible from sizes 40" and Higher. Computer monitors are the exception. 16:9 computer monitors are geared for 1080p or 720p. If you plan to sit far from a PC monitor when you watch HD, then HD really is not going to matter.


With smaller HDTVs, its better to use 1080i. Although a properly encoded 720p hd video would suite it better. 1080p encoded videos look better at 1080i, due to the fact of downscaling. In short, the player must resize the video on the fly, which the quality is totaly based on the player's built in algorithm. By outputing 1080i, you player does nothing to moddify the video, it just telecines it which interlaces it. Your TV will scale it to fit the screen.

I have already tested it on the PS3. While PS3 is unable to scale BD-movies to 720p, it can however scale 1080p movie trailers you can download from PS3 store. At this moment the PS3 scaler adds softeness in the video at 720p, while un altered 1080i video seams cleaner and sharper.

Basicaly to avoid the variables of how good your player is at scaleing, just leave video as is.

[eli1277]

I keep reading on others sites that 720p is actually better then 1080i. I was just wondering what you guys here think is better. I have a 42" Sony Wega Rear Projection and want to know the better viewing option I have. Currently I have everything set to play in 1080i and love it. Will movies and games look better if I have it set to 720p?

[Filterlab]

From what I've read, Progressive is generally perceived to be better than Interlaced as the image is updated frame by frame rather than line by line apparently creating better motion.

Of course it depends on a vast number of factors; quality of cameras used, how well the disc has been mastered, type and quality of disc etc etc. I know that Plasma can only display Progressive images so whatever signal is fed (p or i), the display will change it to p, however I'm not sure about rear projectors.

At the end of the day set it to your favourite setting. Whether it's p or i then go with it and enjoy.

[Blue]

It depends.
720p is de-interlaced ready to at 1280 x 720

1080i can be de-interlaced to a very high quality at half the frame rate so 1080i60 equates to 1080p30 (not quite the same quality but close). The cheap way is to drop half the frames so it's 1920 x 540.

For fast moving sports 720p is supposed to be better as there can be a higher frame rate, but at the expense of resolution. I suspect this may come down to screen sizes etc as to which is the better

[i want HD movies]

Here we go again.... lol

you will read term papers dicussing the ads of each. Like it was said just pick the one that you like better (if you can honestly discern a dfference) and go with it.

The bigger difference I can see is how it was recorded. i.e. Discovery HD records in 1080i for great detail in panaoramic landscape shots, but some artifacting appears when you see movement. Whereas Fox uses 720P due to its strong sprts segment, but still shots do not look quite a clear.

Video games and the like will probably not show any discernable difference in quality. Boadcast tv has lots of pixelation due to the compression of the signal 720, 1080, 324 or whatever. Until the broadcasts are improved it wont make much of a difference.

On your set I think it woud be hard to tell the differecne. Dont worry about it. Just enjoy your set.

[calcajun]

Maybe it is my tv size but i just don't see how people can't see the difference.
My tv is 73" Mitsu diamond rear screen 1080I

For me, I watch one of the channels that brodcast 720p and it looks great (compared to 480P dvd).
Then i see something on another channel like PBS that is broadcast in 1080I or 1080P and the difference is huge. Everything is so clear and detailed where you can totally see fine hairs and lines on subjects. Then go back to 720P and it is just kinda little soft and fuzzy.

Again maybe it is my screen size that realy shows the difference but when i go from 1080 to 720 it frustrates and dissapoints me in the 720P broadcasts because i know how much better 1080 actually is.

[Filterlab]

It's reported that most people can't tell the difference, even those with 1922x1080 TV's would be hard pressed to tell which is 720p and which is 1080p.

[kusutare]

i have my blu setup on a projector at 153" and i cannot tell any difference between 1080i/p however blu-ray looks significantly better than most HDTV.... the only thing that i truly notice is how much better mpeg4 looks over anything else.

[prettyflaco]

How can you compare if your t.v.'s highest resolution is 1080i ?

[Blue]

Threads merged as they are very similar and around the same time. There is yet another thread with an excellent graph of resolution vs screen size vs viewing distance When I find it I will post the link or when anyone else finds it please do so.

Originally Posted by prettyflaco

How can you compare if your t.v.'s highest resolution is 1080i ?

If the TV is not CRT (Cathode Ray Tube) those big "old" TV's it's not i, 1080i will be the maximum signal the electronics can down convert from. Look for the native resolution - that is the actual resolution the signal is converted too, so you won't be comparing 1080 anything.

[Stuie]

I have a Panasonic TH-42PX60B, any ideas on whether that processes the 1080i signal properly or not and is it a good tv?

[stevei]

Originally Posted by JimPullan

There are a multitude of 1080i HDTV's having been sold and now the introduction of the 1080p displays. With the advent of the 1080p capable Blu-Ray players, can the average consumer actually see a difference between a 1080p movie over the exact 1080i movie ? Will a 1080p experience be any more thrilling than the 1080i experience ?

Jim

For movies, there should in theory be no difference between 1080i and 1080p if the TV does its job properly:
http://blog.hometheatermag.com/geoff...061080iv1080p/

However, some TVs do not properly process the 1080i signal, this article lists some that work properly and some that don't:
http://hometheatermag.com/hookmeup/0506halfrez/

[Pilam69]

You CAN TELL THE DIFFERENCE. When I watch programs that input into my 1080p capable tv at 1080i there is a noticeable, difference. Mainly in scenes with a lot of action. Forget the #'s, believe your eyes.

[Ascended_Saiyan]

Originally Posted by stevei

For movies, there should in theory be no difference between 1080i and 1080p if the TV does its job properly:
http://blog.hometheatermag.com/geoff...061080iv1080p/

However, some TVs do not properly process the 1080i signal, this article lists some that work properly and some that don't:
http://hometheatermag.com/hookmeup/0506halfrez/

I think the whole problem is that most don't perform this process well (from what I heard). I can surely see the difference between 1080i and 1080p on my TV.

[vincent_hanna]

Folks--New to the board, and there seem to be some VERY knowledgable folks in here which is very cool. I have a new 65" Toshiba DLP, and a PS3, with Yamaha VX-2600 receiver. However, I have an important choice to make and need some expert opinions.

Would you a) Have 1080p picture with optical audio output or

b) Have 1080i picture with HDMI audio output

Thanks for your help

[Greenmatiz2]

Ok, I just downgraded from a 1080p 42" LCD set to a 1080i 50" PDP set. My observations after 1 week. I wrote about this before, but I am changing my stance a bit:



Yes, I can see the differences in SOME things. Very slight, however, and not as much of an issue if you sit more than 10 feet away. I watched a few scenes on Casino Royale and specifically remembered certain details about the scenes, then compared them (albeit later) to my 1080i set. Here were my observations, which you can take with a grain of salt if you like, because of the differences in sets:

1. In the early scene where Bond is driving in the silver Ford car, and they cut to him viewing his cellphone, I was able to notice the poch-marks (sp?) in his face more easily with a 1080p LCD set. In 1080i, I don't see them in as much detail.

2. The grain in movies is more noticeable in 1080p, although this may be somewhat due to the differences in contrast technology between LCD and PDP.

3. On shots where you see someone close-up, there is virtually no discernable difference between the 1080p and 1080i image, EXCEPT in the fine details in the background.

4. When Bond enters the hotel and sneaks into the security room, I was able to read the SONY logo on the Blu-ray player during the medium shot at 1080p. In 1080i, this is much more difficult to see (we're talking about a darned small piece of screen here, but there is a difference).

5. In Planet Earth, when they showed the opening shots of the cattle in Disk 1, I was able to see the tiny cattle individually with greater detail at 1080p. At 1080i, the details have less of a "wow" factor. This difference is quite noticeable to me.

6. HD Video looks better at 1080p, although some games (like rub-a-dub) look better at 1080i. Weird... I know. It depends on the game, I guess, and native resolution, I suppose. Could be due to PS3 scaling issues, or TV scaling, I don't know.

So bottom line, yes, 1080p is better in the EXTREMELY fine details. Is it worth the extra cost? Hmm... depends on the person. Now that i've gone down to 1080i, I'm apt to say, "yes", where one week ago after initially getting the 1080i, I was saying, "no... they're not much different."

The bigger issue about 1080p is the 24fps capability. I'd get a 1080p set just for that (provided my TV could handle it.

[JeffHenry]

I was thinking of buying a 720p Samsung 32inch LCD, but I noticed it doesn't accept a 1080p signal, thing is, I have no idea what that means, can someone shed some light?

[Type-R]

Originally Posted by JeffHenry

I was thinking of buying a 720p Samsung 32inch LCD, but I noticed it doesn't accept a 1080p signal, thing is, I have no idea what that means, can someone shed some light?

1080p is the maximum resolution of hd so far and they wont have a higher one maybe for another 10 or 15 years. it means that the picture will be clearer, there are 720p, 1080i, and 1080p in HD. standard televisions today that a lot of people have are in 480i/480p which is not as clear as 720p and higher, HD starts in 720p and gets higher. i have a 720p/1080i plasma tv and it's good enough. you don't need 1080p unless your getting a 50in' or higher. but some people think you don't need 1080p unless you get a 42in' or higher but yeah. so for 32in' 720p is good enough. for a 32in' you can't tell the difference anyways.

and good choice going with samsung, in my opinion they make number 1 quality LCD's and number 3 Plasmas behind panasonic and pioneer. sony overprice their LCD's in my opinion.

i also found this article right here with 1080i and 1080p
http://www.hometheatermag.com/gearworks/1106gear/

it says that there is really no difference between 1080i and 1080p because tv shows and movies show in 24fps or something.

720p to 1080p comparison

first and second pic are 480i just that the second pic is on dvd and first pic is on cd.
the third pic is 720p and the fourth pic is 1080p

if you can't really tell the difference between 720p and 1080p, if you look at the top of the ceiling, the grill is a bit clearer in 1080p and the womens face in the background is clearer in 1080p