480p, 1080i and 720p.... how much is the difference?

Discussion in 'OT Technology' started by FyreDaug, Jun 27, 2006.

  1. FyreDaug

    FyreDaug lolswift

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    Unfortunately I bought a tv that does NOT support 720p, and im quite dissapointed in it. However, on the bright side, it does look nice and its a big tv that does everything I need, and for 1400 with 5 year warranty, why not?

    But onto the question, 480p on my xbox doesnt look as good as 1080i... Meaning I can tell the difference between seeing 480 lines and 540 lines at a time, however since I dont have 720, I cant compare.... If the 60 lines I see extra between 1080i and 480p is giving me a noticable difference, does the extra 180 ONTOP of that make a difference? Meaning if 60 lines gives me a bit of a difference (we'll call this 1x) what could an additional 240 do? (call this 4x).... the x standing for... technically 60 lines.

    Should I be shooting myself for not getting a 720 tv? my xbox360 and x800pc both would be able to support 720p...
     
  2. P07r0457

    P07r0457 New Member

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    you don't understand how it works. Progressive means that all horizontal lines are in every frame. Interlaced means that it uses an even/odd line order, and each frame includes only HALF the image (alternating lines).

    High-motion is best represented by progressive, where interlaced can represent still shots, well.

    As for shooting yourself, it depends. $1400 for an EDTV 42" Plasma is a ripoff, imho. You can get a 720p for not much more.

    you can't just say "60 more lines" or some other arbitrary b.s.

    quick-n-dirty visual of resolution difference (each image is to scale compared to each other, 63.328% reduction, overall)
    [​IMG]
     
  3. deusexaethera

    deusexaethera OT Supporter

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    Another example would be to set your screen to 640x480 resolution, and then set it to 1024x768 resolution, and then set it to 1280x1024 resolution. You'll see the difference there, and it will be obvious why people prefer the higher numbers.
     
  4. FyreDaug

    FyreDaug lolswift

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    My screen will only allow me to use 640x480, any other res and it gives me crazy scanning lines.

    Ok, then 1080i vs 720p, is there noticable difference in visuals on xbox?
     
  5. P07r0457

    P07r0457 New Member

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    well, does it matter? your tv can't do either, it seems.

    I would think 720p would look better, however... being progressive, and xbox being high-motion.
     
  6. deusexaethera

    deusexaethera OT Supporter

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    You only have a 640x480 screen? :ugh: How is that possible, in 2006?

    Progressive generally looks better than interlaced, unless the screen's refresh rate is really high.
     
  7. Doc Brown

    Doc Brown Don't make me make you my hobby

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    Are you running this off of the back of a computer?
     
  8. Budha

    Budha Guest

    They actually still sell ED plasmas to customers that have no idea what they are buying. "Ohh look at that plasma, its so hot, and its cheap too!!!" Thats what generally happens, and thepeople have no idea they are getting an outdated TV that isnt high def and will look like ass regardless.
     
  9. AJP

    AJP 7-1 LOL Green Gay OT Supporter

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    The xbox only outputs at 480, so it doesnt matter if your TV is a 720 or a 1080.
     
  10. FyreDaug

    FyreDaug lolswift

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    well my tv does 1080i, so thats why I was asking, whats the diff between 1080 and 720p
     
  11. AJP

    AJP 7-1 LOL Green Gay OT Supporter

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    360 vertical lines of resolution. If it supports 1080, it will support 720 though.
     
  12. FyreDaug

    FyreDaug lolswift

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    Wrong, this particular TV does not.... Will not take the signal from my 360 or my computer. Its retarded, and I thought it did it before I bought. I called up the place I bought it from and they said they dunno.... damn you future shop
     
  13. Clarity

    Clarity New Member

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    I'm at 400x300
     
  14. AJP

    AJP 7-1 LOL Green Gay OT Supporter

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    TV brand and model
     
  15. FyreDaug

    FyreDaug lolswift

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    Magnavox :( uhhh... model I dunno, I believe its the late 2005 model, it was on the clearance part of the store. 1600 delivered with 5 year warranty, so even though its a cheaper one, 5 years of use should be good.

    How about this, what would look better in project gotham 3 on 360, 720p or 1080i?

    480p is mehhh, 1080i looks decent, im wondering if 720 is > 1080i.... 1080p would be nice :big grin:
     
  16. AJP

    AJP 7-1 LOL Green Gay OT Supporter

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    I would take the 720p for a video game, or high action movie, bor other stuff give me the 1080i
     
  17. FyreDaug

    FyreDaug lolswift

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    but how much better would it be? Like comparing 480p to 1080i is x, what does 1080i to 720p =?
     
  18. FyreDaug

    FyreDaug lolswift

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    and are they equal
     
  19. AJP

    AJP 7-1 LOL Green Gay OT Supporter

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    no they arent equl, the 1080i would be a larger picture. Think of it like this, set your computer monitor to 1280x720 and 1920x1080 you will see more detail at 1080. But because it is interlaced you will notice gitters and streaks in high action scenes. So while the picture may be "better" it wont look as good because it will be streaky, so I would take the 720p. It is less resolution but not jittery.
     
  20. FyreDaug

    FyreDaug lolswift

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    Ah so that probably explains the lines on the back of the cars kinda show up funny... thats too bad this tv doesnt do 720p
     
  21. AJP

    AJP 7-1 LOL Green Gay OT Supporter

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    It may do 1080p
     
  22. FyreDaug

    FyreDaug lolswift

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    sure doesnt
     
  23. deusexaethera

    deusexaethera OT Supporter

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    Don't forget, the appearance also depends on the refresh rate.

    Interlacing lets the screen double its mathematical refresh rate, but since half the pixels on the screen don't get refreshed, the actual appearance is that of a refresh rate somewhere between what the manufacturer claims, and half of what they claim, with the apparent refresh rate depending on the image being displayed at any given instant. Therefore, high-action scenes appear to have lower refresh rates than low-action scenes, which is unfortunately the exact opposite of what is necessary to show smooth video.

    So progressive scan still wins out over interlaced scan in general, but if the interlaced scan's refresh rate can be boosted high enough (at least 2x the frame rate of the video, to compensate for needing 2 refreshes to display a whole new frame), you can have your high-resolution and your smooth video too. To get the equivalent of a progressive 60Hz refresh rate out of an interlaced scan, you'd need (what the manufacturer would call) a 120Hz refresh rate. It's certainly doable, but you have to remember to set your screen up that way.
     
  24. FyreDaug

    FyreDaug lolswift

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    How would I do that? right click desktop -> properties -> settings -> advance -> monitor -> refresh rate = 120? or not quiet
     

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