xboxscene.org forums

Xbox360 Forums => Xbox360 Hardware Forums => Xbox360 Audio/Video Technical => Topic started by: kdx80boy on October 27, 2005, 08:31:00 PM

Title: 720p Vs. 1080i
Post by: kdx80boy on October 27, 2005, 08:31:00 PM
I was wondering which of those 2 (720p or 1080i) is better.  Also, does anybody have some pics of the same picture in the 2 different formats.

if this is in the wrong forum please feel free to move it.
Title: 720p Vs. 1080i
Post by: Carlo210 on October 27, 2005, 10:07:00 PM
Read the faqs.

Second of all, how can we give you pictures of the different resolutions? A picture of 1080i wouldn't be possible since your monitor is running in progressive.

Do yourself a favor and do some research (not a troll response, a constructive one). Go and google in whatever you need to know. That's what I did, and I learned a helluva lot (plus with the help of the helpful fellas here).
Title: 720p Vs. 1080i
Post by: twistedsymphony on October 28, 2005, 05:54:00 AM
which ever format your display supports natively is the better format
^ and that's the truth
Title: 720p Vs. 1080i
Post by: Carlo210 on October 28, 2005, 12:53:00 PM
QUOTE(twistedsymphony @ Oct 28 2005, 02:05 PM)
which ever format your display supports natively is the better format
Title: 720p Vs. 1080i
Post by: JMan8108 on October 28, 2005, 03:36:00 PM
on my mitsibishi diamond 1080i feeds look just a very very small bit clearer (EX-Fox sports games are 720p and ESPN sunday night is 1080i) But im sure its different depending on the tv.
Title: 720p Vs. 1080i
Post by: kdx80boy on October 28, 2005, 07:24:00 PM
My point in asking is I have not bought the tv yet.  If I go with CRT, I will get 1080i.  But if I go with lcd, I will get 720p.  Hence my asking.
Title: 720p Vs. 1080i
Post by: twistedsymphony on October 28, 2005, 07:48:00 PM
it totally depends on how you define "better"

In most cases it comes down to the quality of the display rather than the resolution you're displaying. the differences between a CRT and an LCD have a much more dramatic effect on the picture quality outside of the resolutions they support. in terms of refresh rates, response time, scaling lag, natural aliasing/anti-aliasing, color quality, black levels, contrast ratios, etc.

^all of those factors have a much higher effect on how good the picture looks then whether or not the display does 1080i or 720p.

Though if you're that hung up on resolution AFAIK CRTs are the only display type that can natively support both (much like a PC CRT Monitor)
Title: 720p Vs. 1080i
Post by: ericdude on October 29, 2005, 01:25:00 AM
QUOTE(miggidy @ Oct 29 2005, 07:52 AM)
It's the other way around dude. ESPN HD runs at 720p.
Title: 720p Vs. 1080i
Post by: CrisK on October 29, 2005, 06:40:00 AM
ESPN is 720p.
Title: 720p Vs. 1080i
Post by: kdx80boy on October 29, 2005, 11:46:00 AM
Thanks for all the help.  I think I got my answer.  I think I'm gonna stay with the CRT as I still think they look the sharpest.

Moderator can go ahead and shut down this post if you like.
Title: 720p Vs. 1080i
Post by: JMan8108 on October 29, 2005, 09:29:00 PM
QUOTE(CrisK @ Oct 29 2005, 07:51 AM)
ESPN is 720p.
Title: 720p Vs. 1080i
Post by: Ballz2TheWallz on October 30, 2005, 03:47:00 PM
QUOTE(scooby_dooby @ Oct 28 2005, 11:49 PM)
well it's 1280x720 resolution VS 1920x1080 so it's quite a bit higher in resolution.
Title: 720p Vs. 1080i
Post by: Foe-hammer on November 13, 2005, 05:22:00 PM
QUOTE(unclepauly @ Nov 13 2005, 05:10 AM)
not true. more like 1920x540x2 which still equals 1920x1080. there is no illusion of lines that are not there. the lines are there they are just flashed alternately so fast it's not even noticable to the casual watcher. 1080i and 720p are both great looking pictures with their own strengths.
Title: 720p Vs. 1080i
Post by: Ballz2TheWallz on November 13, 2005, 05:41:00 PM
QUOTE(Foe-hammer @ Nov 14 2005, 01:29 AM)
So 1080i and 1080p look the same to the casual watcher?  I call horse-shit on that one.
Title: 720p Vs. 1080i
Post by: Foe-hammer on November 14, 2005, 06:18:00 AM
QUOTE(Ballz2TheWallz @ Nov 13 2005, 04:48 PM)
he said 1920x540x2
Title: 720p Vs. 1080i
Post by: Moleman on November 14, 2005, 06:29:00 AM
Well, think about it this way:

1080i

Frame1:odd lines
Frame2:even lines

1080p

Frame1:all lines
Frame2:all lines again or new frame?

If frame 2 in 1080p is a new frame, bandwidth goes up like crazy.  You have effectively quadrupled your bandwidth requirement.
Title: 720p Vs. 1080i
Post by: twistedsymphony on November 15, 2005, 07:04:00 PM
QUOTE(unclepauly @ Nov 15 2005, 03:50 AM)
1080p will look better than 1080i no doubt but they are the exact same amount of pixels each. The difference is in how it's refreshed. I'm not gonna go on about that though cuz it's old news. Guess what though, the jump from 1080i to 1080p is not as big a jump as going from 480i to 480p. The high quality is already there, when it was 480i the quality was shat. So basically going to 1080p is about getting rid of the small artifacts that most  people wouldn't even notice on a properly calibrated tv and stabilizing the picture.
Title: 720p Vs. 1080i
Post by: Ballz2TheWallz on November 17, 2005, 04:11:00 AM
i wanna know, doesnt xbox onboard scaler chip have ability to takee the internal render 720p->1080p output?, no need for scaler?
Title: 720p Vs. 1080i
Post by: Foe-hammer on November 17, 2005, 04:54:00 AM
All i know is in 1080i, xbox games, emu's, and movies look like shit on my 19" sony trinitron flat crt monitor, while 720p looks great.

720p (45kHz) has a considerably higher H. freq. then 1080i (33kHz), which is the exact same thing as what 540p would give......exactly half of 1080i.  In fact, 1080i has about the same H. freq. as 480p (31kHz).  On a computer monitor, 1080i's picture quality is comparible to to what 540p would be.
Title: 720p Vs. 1080i
Post by: twistedsymphony on November 17, 2005, 06:19:00 AM
QUOTE(unclepauly @ Nov 17 2005, 04:29 AM)
You just stated the exact same thing i said you tool. What did I say? "The difference is in how it's refreshed." Maybe you should read posts you reply to a couple times before you go shooting your typing finger off at people.  rotfl.gif
Title: 720p Vs. 1080i
Post by: kdx80boy on November 17, 2005, 03:31:00 PM
I already got my tv.  It does both 720p and 1080i natively, which is better?  plain and simple, either 720p or 1080i period.
Title: 720p Vs. 1080i
Post by: twistedsymphony on November 17, 2005, 05:30:00 PM
QUOTE(kdx80boy @ Nov 17 2005, 05:38 PM)
I already got my tv.  It does both 720p and 1080i natively, which is better?  plain and simple, either 720p or 1080i period.
Title: 720p Vs. 1080i
Post by: unclepauly on November 18, 2005, 01:00:00 AM
QUOTE(kdx80boy @ Nov 17 2005, 06:38 PM)
I already got my tv.  It does both 720p and 1080i natively, which is better?  plain and simple, either 720p or 1080i period.
Title: 720p Vs. 1080i
Post by: Foe-hammer on November 18, 2005, 01:48:00 AM
QUOTE(unclepauly @ Nov 18 2005, 12:10 AM)
I think my 1080i tv does 60hz.. it's a rear-projection, I'll have to check.
Title: 720p Vs. 1080i
Post by: twistedsymphony on November 18, 2005, 07:55:00 AM
QUOTE(Foe-hammer @ Nov 18 2005, 03:55 AM)
First of all i'm typing about Horizontal frequencies, not refresh rates.  Plus, all the refresh rate you'll see in 1080i (anything interlaced) is 30hz.
Title: 720p Vs. 1080i
Post by: mgamer20o0 on November 20, 2005, 03:07:00 AM
where can i go to see the 2 for my self. i dont know anyone with a hdtv. right now i am looking at 2 diffrent hdtvs. a 51" 1080i CRT Rear Projection TV for less then $1000 and a super cheap 15" lcd 1080i/720p for about $200. there are so many people saying how bad 1080i looks but come on its hdtv it looks better then my reg tv right?