720 v 1080 37" LCD TVs
Discussion
The 'i' or interlacing means that every other line is updated per frame (1/60th of a second). This means you only get half the effective resolution when things are moving around, so for 1080i thats only 540 lines of resolution compared to 720p which has the full 720. 1080i is better for static scenes however. Personally i prefer 720p.
_deano said:
The only item that i can think of that will be using 1080p will be the PS3 next year.
Even the Xbox360 uses 720p of 1080i.
Even the Xbox360 uses 720p of 1080i.
Unless you have turned it on in the last day or so, in which case you'll find the magic box now pumps out 1080p visual goodness. Barstewards kept that one quiet, didnt they?
randlemarcus said:
_deano said:
The only item that i can think of that will be using 1080p will be the PS3 next year.
Even the Xbox360 uses 720p of 1080i.
Even the Xbox360 uses 720p of 1080i.
Unless you have turned it on in the last day or so, in which case you'll find the magic box now pumps out 1080p visual goodness. Barstewards kept that one quiet, didnt they?
Over what connector?
Luca1973 said:
derestrictor said:
Luca1973 said:
...will the difference between 720 and 1080 be pretty negligable?
It will be in-significant, next to the power of The Force...
Hmmm... that Force sounds interesting.Wireless HD?
www.reghardware.co.uk/2006/11/01/ce_giants_punt_wihd/
Unless your using it as a computer monitor a 37" tv isnt going to show off at 1080p anyhow.
As for comparison 1080i is higher resolution than 720p but about the same data bandwidth, same resolutiuon as 1080p but interlaced.
My xbox 360 is connected to a 720p display via component, I dont see any reason for me to be bothered with 1080 anything. Only reason to switch to the VGA cable is DVD upscaling but I dont have any reg 4 dvds anyhow...
As for comparison 1080i is higher resolution than 720p but about the same data bandwidth, same resolutiuon as 1080p but interlaced.
My xbox 360 is connected to a 720p display via component, I dont see any reason for me to be bothered with 1080 anything. Only reason to switch to the VGA cable is DVD upscaling but I dont have any reg 4 dvds anyhow...
1080i is most definitely not the same resolution as 1080p.
And due to the (lack of) standards, you need to qualify the frame rate for each - 1080i50/60 and 1080p25/30, not 1080p50/60, which hasn't been ratified, if even thought about yet.
Given LCD/Plasma are progressive by design, the quality/resolution of a 1080i signal that's been de-interlaced could be worse than a 720p upscaled by the in-built processor.
Some, if not all but the highest quality de-interlacing is done by treating the 1080i signal as two 540 fields.
Already there's talk/demo of 100Hz panels, coming next year IIRC. Supposedly this is making LCD look very like CRT as far as image smear (or lack thereof) is concerned.
And due to the (lack of) standards, you need to qualify the frame rate for each - 1080i50/60 and 1080p25/30, not 1080p50/60, which hasn't been ratified, if even thought about yet.
Given LCD/Plasma are progressive by design, the quality/resolution of a 1080i signal that's been de-interlaced could be worse than a 720p upscaled by the in-built processor.
Some, if not all but the highest quality de-interlacing is done by treating the 1080i signal as two 540 fields.
Already there's talk/demo of 100Hz panels, coming next year IIRC. Supposedly this is making LCD look very like CRT as far as image smear (or lack thereof) is concerned.
1080i and p are the same resolution - 1080x1920.
1080i at 50 or 60Hz just show the odd lines (540x1920) first followed by the even lines (540x1920) so you get the whole 1080x1920 frame, the exact same number of pixels as 1080p at 30Hz.
1080i is at 50Hz and 60Hz.
1080p is at 25Hz and 30Hz.
1080p at 50Hz or 60Hz is a non issue appart from playing computer or video games.
Movies (on Film) are at (just under) 24fps (24Hz) so it doesn't matter if they are encoded at 1080i or 1080p as any decent 1080 line display should be able to use inverse telecine to stich the two feilds of 1080i back together.
Anything filmed in HD Video (sports/ entertainment) will be 1080i.
I think the confussion comes from people mixing up what a TV can input and output.
HD Ready TVs must accept 720p and 1080i (input) and must be capable of displaying (output) atleast 720 vertical lines.
So HD Ready TV's with screen resolutions of 720x1280, 1366x786, any number of the plasma resolutions with non-square pixels (1024x768, etc.) will accept 1080i and display a 1080i signal, it's just it will be down scalled to the panels resolution thus loosing some detail.
There are HD Ready TV's with 1080x1920 panels that only accept 720p and 1080i (at 50 or 60Hz) signal, however as i explaned above anything film based will be shot at 24fps which will be reconstructed to 1080p (as LCD panels are progressive) and anything shot with HD video at 1080i will be interlaced anyway. Even the current HD-DVD and Blueray players either only offer 1080i or generate the 1080p from a 1080i signal interannly with an additional chip tacked on the end of the output.
1080p TV's don't really offfer anything but a tick in the box and a marketing angle
EDIT: any decent brand TV with a 1080x1920 (or infact lower res) panel should definitely not line double a 1080i image, maybe some cheap Chineese models may...
1080i at 50 or 60Hz just show the odd lines (540x1920) first followed by the even lines (540x1920) so you get the whole 1080x1920 frame, the exact same number of pixels as 1080p at 30Hz.
1080i is at 50Hz and 60Hz.
1080p is at 25Hz and 30Hz.
1080p at 50Hz or 60Hz is a non issue appart from playing computer or video games.
Movies (on Film) are at (just under) 24fps (24Hz) so it doesn't matter if they are encoded at 1080i or 1080p as any decent 1080 line display should be able to use inverse telecine to stich the two feilds of 1080i back together.
Anything filmed in HD Video (sports/ entertainment) will be 1080i.
I think the confussion comes from people mixing up what a TV can input and output.
HD Ready TVs must accept 720p and 1080i (input) and must be capable of displaying (output) atleast 720 vertical lines.
So HD Ready TV's with screen resolutions of 720x1280, 1366x786, any number of the plasma resolutions with non-square pixels (1024x768, etc.) will accept 1080i and display a 1080i signal, it's just it will be down scalled to the panels resolution thus loosing some detail.
There are HD Ready TV's with 1080x1920 panels that only accept 720p and 1080i (at 50 or 60Hz) signal, however as i explaned above anything film based will be shot at 24fps which will be reconstructed to 1080p (as LCD panels are progressive) and anything shot with HD video at 1080i will be interlaced anyway. Even the current HD-DVD and Blueray players either only offer 1080i or generate the 1080p from a 1080i signal interannly with an additional chip tacked on the end of the output.
1080p TV's don't really offfer anything but a tick in the box and a marketing angle
EDIT: any decent brand TV with a 1080x1920 (or infact lower res) panel should definitely not line double a 1080i image, maybe some cheap Chineese models may...
Edited by mr_yogi on Friday 3rd November 09:05
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