A question regarding 1080/60p and 1080/24p

[Deciazulado]

Depends of which output your displays accepts (24p, 60p, or 60i) (and of course what your player is capable of spitting out ) where the conversion is done, but yes you need a 24p output and a 24p display if you want film motion to be artifact free.

A player's 24p output for movies goes into a display that accepts 24p and refreshes/displays it at 48/72/96/(or in future displays, 120) progressive "flashes" per second.
If your display can't accept/refresh 24p, or you don't have a 24p player, or if the BD is from videotaped 60i content, you would use the player's 60 Hz output (be it 60i or 60p) which will be displayed at 60 (or in future displays, 120) progressive "flashes" per second (unless you have an interlaced CRT HDTV which would display the output as fields (half frames) in 60 interlaced "flashes' per second)

24 fps movies shown in a 60Hz output have a 3:2 cadence of repeats of the frames and will show judder when things move. If you've never noticed it before when watching NTSC DVDs don't start looking for it so you can still enjoy 60Hz only displays

[SDK]

Originally Posted by Deciazulado

(or in future displays, 120) progressive "flashes" per second

Thanks so much for your explanation!

Added to my HDTV buying checklist...

[WriteSimply]

You don't really need a 120Hz display. Just as long as your display can do 1080p24, 1080i60, or 1080p30 is good enough for BD.

120Hz display may come in play when BD does 3D, where each eye gets alternate videos flashing at 1080p30.


fuad

[dialog_gvf]

Originally Posted by WriteSimply

120Hz display may come in play when BD does 3D, where each eye gets alternate videos flashing at 1080p30.

120Hz would be for 3D@60p, no?

Gary

[WriteSimply]

Originally Posted by dialog_gvf

120Hz would be for 3D@60p, no?

Gary

Theoretically. All this talk is theoretical, just in case people are wondering. Wouldn't it be nice though?


fuad

[Deciazulado]

The other advantage of 120 Hz is that 12, 15, 20, 24 30, 40, and 60 framerates all can be displayed without motion artifacts, important in a world full of different, mixed frame rates. Even 25 and 50 will have smaller or little judder, at that refresh rate.

[PurpleAardvark]

Originally Posted by WriteSimply

You don't really need a 120Hz display. Just as long as your display can do 1080p24, 1080i60, or 1080p30 is good enough for BD.

120Hz display may come in play when BD does 3D, where each eye gets alternate videos flashing at 1080p30.


fuad

Their is no tv that can do 1080p30 at the moment, only 1080p24 and 1080p60.

[WriteSimply]

Originally Posted by PurpleAardvark

Their is no tv that can do 1080p30 at the moment, only 1080p24 and 1080p60.

Well that is still fine. That means the frames are repeated twice.

One of these days you have to explain who/what Le Aadvark Pourpre is.


fuad

[emilsjr]

Is there a list of tvs that accept 1080p24 anywhere?

[mainman]

Maybe a stupid question but,

What happens if a BD player that does 1080/60p, like for instance the PS3, but you have a 1080/24p display?

Is it possible that you just dont get any picture?

[SDK]

Originally Posted by PurpleAardvark

Their is no tv that can do 1080p30 at the moment, only 1080p24 and 1080p60.

Are they displaying "true 1080p24" or convert 1080p24 -> 1080p60 internally?

What should one check in the TV's manual to be sure the feature is in there? The input signal or/and the refresh rates, or just the input signal? (assuming 1080i is not interesting)

To get 1080p/24fps:
48?/72/96/120Hz must be mentioned in Manual's specifications for refresh rates
AND
1080p/24fps must be mentioned in Manual's specifications for input signal

To get 1080p/30fps:
60/90/120Hz @ refresh
AND
1080p/30fps @ signal

To get 1080p/60fps:
60/120Hz @ refresh
AND
1080p/60fps @ signal

[PurpleAardvark]

Sony 40-52 XBR 2 or 3 LCD's will take a 1080p24 signal with out converting as will the pioneer elite tv's (can't rember the model number) with out converting. However you are correct in saying that most 1080p tvs are at 60hrz or 60fps. As time progresses you will see more 1080p24 tv's come out, but for right now they have a hefty pricetag for thier size.

[GoldenRedux]

I have a question - is stored 1080p30 video content in the Blu-ray spec?

[mainman]

Originally Posted by PurpleAardvark

Sony 40-52 XBR 2 or 3 LCD's will take a 1080p24 signal with out converting as will the pioneer elite tv's (can't rember the model number) with out converting. However you are correct in saying that most 1080p tvs are at 60hrz or 60fps. As time progresses you will see more 1080p24 tv's come out, but for right now they have a hefty pricetag for thier size.

Are these 3LCD tv's your talking about, 1080/24p only or can they do 1080/60p as well?

[emilsjr]

Originally Posted by PurpleAardvark

Sony 40-52 XBR 2 or 3 LCD's will take a 1080p24 signal with out converting as will the pioneer elite tv's (can't rember the model number) with out converting. However you are correct in saying that most 1080p tvs are at 60hrz or 60fps. As time progresses you will see more 1080p24 tv's come out, but for right now they have a hefty pricetag for thier size.

Thanks for the answer. However, I have been looking through the 52" XBR3 manual and see no mention of 24p support. On Sony's site, it lists the tv as having 1080p/60. Is there an owner out there that can confirm the 1080p24 on the XBR3?

[academ50]

Seems everytime I think I have HD figured out I'm defeated by a lack of information. I bought a Sony Bravia KDL-46XBR2 with "full HD 1080p" capability, or so I was led to believe (not cheap, BTW). After a year I was compelled to buy a Sony BDP-S350 Blu-ray player to experience the TV's full capability. The S350 has a little blue light that illuminates when a full 1080/24p signal is being sent. Guess what. The KDL-46XBR2 can't receive in 24p, so there's some kind of 3-2 interface going on (I guess). I only discovered this 24p vs 60p issue when the blue light never came on, when I forced it to transmit in 1080/24p the TV couldn't support the signal at all. Bottom line: I'm not really sure if I'm seeing a 1080p picture or not?! I would really like to find out if the 1080/24p conversion to 60p is a 1080i signal or 1080p signal and if I am receiving an inferior picture resolution by not having a 24p capable TV? I'm not particularly "blown away" by the Blu-rays picture resolution (it is good, though). Does anybody know what is going on? - Frustrated.