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[Linux] HOW-TO achieve perfect playback at 23.97 or 59.94 Hz with NVIDIA GPU hardware - Printable Version

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- Superorb - 2010-11-30 18:52

a_user Wrote:no. as i said. most tv display allways 24.

23.976Hz is the cinema movie frequency. it is used on blurays (and it is allways this when you have cinema movies on blurays). this is called the 24p mode. tv that support the 24p mode are setting there refresh rate to 23.976Hz BUT most of them disply 1920x1080@24 (for full hd).

my tv has an integrated media player that supports this mode. it even is explained in the handbook and technical sheet.
You're preaching to the choir. It was said earlier than their TV supports both 24p and 23.97p. My TV will play both as well, but it will always be displayed as 24p when I look at the source info on the TV.


- X3lectric - 2010-11-30 19:59

a_user Wrote:no. as i said. most tv display allways 24.

23.976Hz is the cinema movie frequency. it is used on blurays (and it is allways this when you have cinema movies on blurays). this is called the 24p mode. tv that support the 24p mode are setting there refresh rate to 23.976Hz BUT most of them disply 1920x1080@24 (for full hd).

my tv has an integrated media player that supports this mode. it even is explained in the handbook and technical sheet.

No 23.976Hz is default NTSC fps... Cinema fps is not the same in fact its 24p b;uray and HD use 24p so your not right...

wikipedia Wrote:24p in high definition disc formats

Both HD DVD and Blu-ray Disc support the 24p frame rate, but technical implementations of this mode are different among the two formats. Blu-ray Disc supports 24p with its native timing, while HD DVD uses 60i timing for 24p (replacing missing frames with "repeat field flags").[5]

wikipedia Wrote:There are currently (2010) three main frame rate standards in the TV and movie-making business: 24p, 25p, and 30p. However there are many variations on these as well as newer emerging standards.

wikipedia Wrote:Originally moving picture film was shot and projected at various speeds using hand-cranked cameras and projectors; though 1000 frames per minute (16⅔ frame/s) is generally cited as a standard silent speed, research indicates most films were shot between 16 frame/s and 23 frame/s and projected from 18 frame/s on up (often reels included instructions on how fast each scene should be shown).[9] When sound film was introduced in the late 1920s, a constant speed was required for the sound head. 24 frames per second was chosen because it was the slowest (and thus cheapest) speed which allowed for sufficient sound quality. Improvements since the late 19th century include the mechanization of cameras — allowing them to record at a consistent speed, quiet camera design — allowing sound recorded on-set to be usable without requiring large "blimps" to encase the camera, the invention of more sophisticated filmstocks and lenses, allowing directors to film in increasingly dim conditions, and the development of synchronized sound, allowing sound to be recorded at exactly the same speed as its corresponding action. The soundtrack can be recorded separately from shooting the film, but for live-action pictures many parts of the soundtrack are usually recorded simultaneously.
Read up get informed and dont post confusing info... read my previous post as well.


- TheSwissKnife - 2010-12-01 03:21

a_user Wrote:no. as i said. most tv display allways 24.

23.976Hz is the cinema movie frequency. it is used on blurays (and it is allways this when you have cinema movies on blurays). this is called the 24p mode. tv that support the 24p mode are setting there refresh rate to 23.976Hz BUT most of them disply 1920x1080@24 (for full hd).

my tv has an integrated media player that supports this mode. it even is explained in the handbook and technical sheet.

Some blurays (of cinema based films) are 24.000Hz though most are 23.976Hz (or 24/1.001Hz).


- X3lectric - 2010-12-01 10:29

TheSwissKnife Wrote:Some blurays (of cinema based films) are 24.000Hz though most are 23.976Hz (or 24/1.001Hz).
clearly my post **fell on deaf ears. DOes anyone bother reading facts before posting?

Its more like The blurays are 24p in their majority while only some are 23.976... since 24p has been widely used and accepted over other fps.

some blog Wrote:Since movies are filmed at 24 frames per second, you'd want to use an even multiple of 24 (such as 72 frames per second) to avoid motion artifacts in slow-panning scenes. If you display 24-fps content at an uneven multiple, like the commonly used 60 fps, you'll end up with those artifacts

**edit thx to superorb super pedantic powers... lol... thx mate Wink


- a_user - 2010-12-01 12:17

Superorb Wrote:Does your TV display 23.976 on screen when playing that content?

X3lectric Wrote:clearly my post fell into death ears. DOes anyone bother reading facts before posting?

Its more like The blurays are 24p in their majority while only some are 23.976... since 24p has been widely used and accepted over other fps.

i still never saw one with 24hz. all i saw up to today say 24p on the cover and are 23.97 Hz (information that any player gives me about it). but maybe it is noly my movie collection... who knows.


- TheSwissKnife - 2010-12-01 14:43

X3lectric Wrote:clearly my post fell into death ears. DOes anyone bother reading facts before posting?

Its more like The blurays are 24p in their majority while only some are 23.976... since 24p has been widely used and accepted over other fps.

Not sure what you mean but I have read, and I believe I do know the facts - so I hope you were not suggesting I hadn't. To repeat myself Blurays are 23.976 (24/1.001) in the majority (adjusted from cinema 24p form to suit NTSC equipment), but some are 24.000 and these are usually European.

A very good list can be found here (though I am not simply basing it on that as I have some 24.000 myself):

http://www.avsforum.com/avs-vb/showthread.php?t=1155731


- X3lectric - 2010-12-01 15:55

oh never mind...


- TheSwissKnife - 2010-12-01 16:16

X3lectric Wrote:oh never mind...

That is not very helpful to anyone. Either you made an honest mistake and you could admit and correct it, or you still don't agree and could explain further...either way it would be courteous to add something after the strong comment "DOes anyone bother reading facts before posting?".


- Superorb - 2010-12-01 16:49

X3lectric Wrote:clearly my post fell into death ears.

It's "fell on deaf ears" Wink


- X3lectric - 2010-12-01 17:03

Im not gonna turn this into a flaming war, I stand for the facts that are posted by reputable sources on wikipedia.

I believe my posts were the most comprehesive explanation and clarification about fps, if no one finds facts useful, it not my problem...

I have explained in detail and thers links for people to verify the information I posted...

@ superorb

thx for nitpicking Wink ive corrected it.... just in case...