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A question about NTSC telecine

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So I was wondering,

When a 24 frame per second movie is telecined for NTSC, is the original playback speed faithfully preserved or is it running the slightest bit slower? It's just that I recently read the wiki entry for 24 fps to NTSC telecine and it said that because it's not 30 fps it's actually 29.97, the film has to be slowed from 24 to 23.976 fps in order for the original framerate to be redistributed across the NTSC framerate. All this time I thought NTSC actually preserved the original framerate! So which is it, 24 or 23.976?
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Yes, it does run ever-so-slightly slower than 24fps.
On a DVD, the framerate is approximated to 24000/1001.

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So why doesn't the audio track of a 24 fps movie get out of sync with a 23.976 fps dvd?
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Because it's slowed down 0.1%.

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I guess my next question would be, do the high definition formats get around this problem? I definitely found the flicker a whole lot more noticeable when I checked out the HD-DVD and Blu-ray demos, which led me to believe that it was a true 24p playback.
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Originally posted by: Moth3r
Because it's slowed down 0.1%.

So PAL audio is sped up and NTSC audio is actually slowed down? I didn't know that.

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Originally posted by: Fang Zei
I guess my next question would be, do the high definition formats get around this problem? I definitely found the flicker a whole lot more noticeable when I checked out the HD-DVD and Blu-ray demos, which led me to believe that it was a true 24p playback. Flicker? I don't really know much about the HD formats, but I believe that the display refresh rate is still 59.94Hz.
For the 1080i format, the output is telecined with 3:2 pulldown as for SD video.
For 720p (and 1080p, I suppose?) a 24fps film would display frames in the sequence 1 1 2 2 2 3 3 4 4 4 and so on.
Either way, the display framerate is 23.976fps.Originally posted by: Arnie.d
So PAL audio is sped up and NTSC audio is actually slowed down? I didn't know that.
Yes, but there is a big difference between a 0.1% slowdown and a 4% speedup.

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"If I could legally buy a gun"

Are you a felon, Arnie?

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Originally posted by: MeBeJedi
"If I could legally buy a gun"

Are you a felon, Arnie?

No. It's just to much work to get a license. You have to join a club. You have to be a memeber for at least a year before you can buy your own gun. And you have to do al sort of exams.
A lot of people don't know you can buy firearms in Holland (not talking about hunting rifles here). But once you get your license you can buy anything you want.
I just want to go to the police station, show my record of good behavior, get a license, buy a gun and shoot in my backyard. Not gonna happen in Holland.

Fez: I am so excited about Star Whores.
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Well I just looked up the U.K. releases of the Casino Royale blu-ray disc and the Harry Potter 4 hd-dvd and they both match their imdb running times exactly. I guess this high definition stuff really is the future. Moth3r, in regards to that flicker I was talking about, what I meant was that there is a very apparent cinema-like flicker when viewing high def media. At least there was when I saw a demo of Cinderella Man on HD-DVD.
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another question,

Does PowerDVD automatically speed up NTSC dvd's to 30 fps? The reason I ask is that whenever I play dvd's in PowerDVD, the configuration says that the framerate is 30.00 per second. That's being pretty precise. Also, computer monitors can't display such a precise framerate as 29.97, so doesn't it have to speed it up to a rounded number like 30? Also, from time to time and depending on the soundscape of the movie, I've noticed a certain distortion in the audio of my dvd's while playing them in PowerDVD that I don't notice while playing them on a tv. Maybe it's just that my ears are noticing the lossy compression but I was wondering if it's actually the sped up audio.

Something I just remembered that might make my assumption incorrect is that my old roommate would hook up his nice 128megabyte video card on his computer to my small as hell sony trinitron tv so we could watch dvd's, and if it was a different framerate it wouldn't have worked on both his computer monitor and my tv at the same time, right?
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You are confusing the terms "frame rate" and "refresh rate". This link may help.

I don't know exactly how PowerDVD behaves, but I know that it doesn't speed up 23.976 fps to 30 fps!

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Well it would technically be 23.976 to 24 or 29.97 to 30 but I think you already get my point. There was an article on wiki about moving image formats and how it is apparently possible to speed up 23.976 fps video to 24, it just didn't say how this could be accomplished.

In regards to the whole refresh rate / frame rate confusion, whenever I watch HD quicktime trailers the info says it's a 23.98 fps file but it's playing at 24.00. So again, I don't quite understand what the computer is doing.
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(copy-pasted from another thread)

Sorry to drag on this question, but can someone who knows please tell me if movies are recorded onto blu-ray/hddvd at exactly 24.000 frames per second? I keep stumbling across message boards in my google searching where people say things like "it has to output it at 23.976 because that's the only thing your television understands" even when they're talking about high definition teleivions. Then there's also that 23.98 framerate I keep hearing about. Please, someone just clear this up for me. I haven't gotten into either format yet because I don't own an hdtv, although I do own a 1024by768 4:3 monitor with both vga and dvi if it makes any difference (don't know if it would be possible to hook up a set top device to this). So yea, right now I can't watch 16:9 video in anything higher than 1024 by 576, however the big appeal to me about these new high definition formats hasn't been the resolution but the fact that it bypasses the existing ntsc and pal systems, allowing us to watch our movies at their exact framerate (at least that's what I've been led to believe). If someone could clear this up I'd greatly appreciate it.

EDIT: yea sorry for all that. I did some digging and I'm now almost totally positive it's exactly 24.000 frames per second for both hddvd and blu-ray. I stumbled upon a forum where people were talking about "cadence" which is something I've heard brought up around here before.