can someone pls tell me the difference between 576p and 1080i

which one is going to give me the better picture.

i have a hotchip HDT-4000 HD settop box.

thanx

576p has a resolution of 576x720 and is a progressive scan signal, 1080i has a resolution of 1080x1440 or 1080x1920 and are both interlaced signals, the best one is 1080i, but soon there should be another resolution you could use and that would be 1080p, it is suppose to be better than 576p and 1080i because it could be called super HD, where as the others are just HD. The way it works is you start with SD which is 576i, then a broadcaster has three options on how to make it better quality for those who have HD tuners, they can either make it progressive (576p) or they can double the resolution of the height and the width and have it remain as interlaced (1080i) or they can chose to do both and it will end up 1080p, but no station use this as it would require a lot more bandwidth compared with 576p or 1080i and stations are already having difficulty finding enough bandwidth to supply an SD channel and a HD channel, but for now 1080i is the best quality (depending on your screen).

It depends on the resolution of the display.

How many lines is it?

If 480, then 576, SD is all you need.

If 720/768, then feed it with HD 1080i.

i have a soniq plasma panel. also 1 more question ( the aspect ratio ) what should it be set to for widescreen.

16:9 on the settop box??

thanx

Yes, 16:9 on the ODT 4000HD, and (assuming a component connection) set the Soniq to Wide.

I have the same STB and panel. I feed the panel 1080i.

I would be really interested as to whether you can get the Soniq to display the Hotchip's 720p setting, coz I can't.

Also, in general with the Soniq, and I've played with it since October with various input devices, IMHO it displays interlaced resolutions better than progressive ones - again, my eyes and MHO...

1080p is HD, as is 1080i and 720p. There's no such thing as "super HD". There is however Ultra HD, being developed in Japan, it relies on capturing from multiple cameras and joining the footage into one large composited image.

btw, 1920x1080 is 5 times the resolution of 720x576

nic06, i cant get the 720p working either, u are not the only one.

i tried the dvi cable from the stb but i could not see much of a picture difference.

i have the settpb box runnning on component and the picture is awesome. i have foxtel running dron scart to component and the picture again with this is good too.

are u happy with your panel and stb.

also what is this 1080p, do the tv stations just produce it and will it eventually show up on out boxes one day like 720p and 1080i are displayed.

I only called it Super HD as it uses both enhacements that can be done to make SD HD rather than just 1 which all the broadcasters do. In fact would anyone favour 1080p being broadcast by the stations on their analogue frequencies in digital soon after analogue is switched off, and this would then replace the HD service on their digital frequencies allowing for more SD channels or better quality SD as well as much better quality HD.

That's sort of good to here. I'm just glad the other res's are so good, so lacking 720p is no big deal, certainly not enough to send the hotchip back..
Hey, another piece of de ja vu. I tested the hotchip on DVI, but on close scrutiny versus component, I found DVI had a slight flicker on horizontal graphics like the full screen cricket score/team list. I stuck with component too. (running my Maya DVD-603 on HDMI->DVI)
Yeah, I'm stoked - I love it, the family love it, friends too. Great value for money.
1080p is the progessive scan format of 1080i. To do this (progressive scan) a true 1080 line display will have to refresh all 1080 lines of the screen in a single pass. With interlaced (i.e. all interlaced images) only every second line of the screen is refreshed at each pass. No idea what DTV will do with it, but nothing soon I'd think. No idea as to whether our Hotchip will support it, but maybe with a firmware update down the track. Certainly we will be looking at spending again on a display (whatever technology it might be) to see the benefits of 1080p.

nico6, where did u get your maya from. i was thinking about getting one but did not know what the pic would be like on our tv's.

is is really much better than normal dvd.

Now I'm confused also!

I recently got the LG 42PX4DVC.
I know this is SD Plasma with HD inbuilt tuner. It claims to have a resolution of 852x480. However, in the manual, it says "Component In (Y,Pb,Pr) + Audio : 2 (480i/480p/720p/1080i) "

Does this mean it can display the 1080i? I assumed it couldnt because 1080i is a resolution far in excess of 852x480.

Can anyone help with this?

It will accept a 1080i and 720p signal, but it will be downscaled to match the panel's native resolution of 852x480.

I suspect your panel is a progressive SD panel that operates natively in progressive mode so I would probably go with the 576P as it is more closely aligned with the native format and resolution of your display.

If you had an ALIS panel which operates in interlace mode at say 1024X1024 then I suspect 1080i would be best whilst a progressive panel at 720X1280 could be either 720P or 1080i depending on which device (STB or Panel) was better at scaling and/or de-interlacing. Having said this I would probably choose 720P as itthere is probably little value in modifying 576P (Progressive) channels (Seven, ABC and SBS) to interlace format and scale to 1080i only for the panel to de-interlace and convert to 720P format.

Bryan

Not really... If it's a 480 panel, it will want to run in progressive scan, whereas the SD will be interlaced, and will need to go through more conversion to be displayed, not only downscaled but also non-interlaced from an interlaced source. A HD box would allow you to feed it a 576p signal, which will convert better to 480p. It will also allow you to feed a 1080i signal to the screen, which due to it's high resolution will look better than SD, even downconverted and displayed progressivley. The HD box will also allow you to take advantage of any high end connections, such as component, VGA, DVI/HDMI and will allow you to recieve dolby 5.1 when broadcast. If using the better connections doesn't concern you, and the slight PQ increase will not be missed, then sure SD box for an SD panel will look fine... just not quite as good as it could.

JSmith :ph34r: