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1080p/24fps only possible if I engage motion software?

nmaynan
05-20-2009, 03:30 PM
If i buy a 120hz TV but leave the motion software that performs dejudder/blur reduction set to off, will I still be able to get 1080p/24fps with blu-ray discs? Or does the motion software HAVE to be engaged for 1080p/24 to be output?

I see that the new Samsung LNB750 gives users the option of turning on "blur reduction" and/or "dejudder" independently but no other TV maker offers this. So with most LCD TVs, if I want blur reduction I also must have dejudder. But can I at least get 1080p/24 output without engaging the motion software by virtue of the fact that the TV is 120hz?

PFC5
05-20-2009, 03:49 PM
Welcome to the forum! :hithere:

You cannot turn off 120Hz refresh rate on any 120Hz LCDs that I am aware of, so as long as such displays do 5:5 pulldown with the interpolation (motion feature) disabled you should still get smoother video on a 1080p/24Fps signal from a BD player. It still might not look exactly like film, but should smooth things out with less artifacts.

Hope this helps!

nmaynan
05-20-2009, 06:05 PM
Thx for the info :D

On wikipedia it says that all blurays output up to 1080/24p. Bluray can not output 1080 at 60p.

I'm looking at the Sony kdl-40v5100 model, and it says that it supports 1080/60p and 1080/24p. What outputs at 1080/60p if blu-rays can't do it?

PFC5
05-20-2009, 08:42 PM
Thx for the info :D

On wikipedia it says that all blurays output up to 1080/24p. Bluray can not output 1080 at 60p.

I'm looking at the Sony kdl-40v5100 model, and it says that it supports 1080/60p and 1080/24p. What outputs at 1080/60p if blu-rays can't do it?

Wikipedia is incorrect as all BD players CAN output 1080p/60Fps as well as 1080p/24Fps IF you have a display that can accept the 24Fps signal. most of the older model HDTVs cannot accept a 1080p/24Fps signal, so it would be suicide if BD did not offer 1080p/60Fps.

Nothing else outputs 1080p/60Fps besides BD (or the dead HD DVD format), so that shows yet another example of WHY wikipedia is wrong. ;)

nmaynan
05-21-2009, 06:46 AM
Generally it seems that more fps is better. Like 60fps is progressive and preferred to 30fps. So do some folk like to have 24fps specifically because this is how the Film was recorded, and 60fps is more like video? That is, it's just a personal preference sort of thing more than a PQ thing?

PFC5
05-21-2009, 11:12 AM
Generally, people like to output 24Fps when they have a display that has a refresh rate that is an even multiple of 24 (i.e. 72 or 120) so they can eliminate judder. But I find even on my lower priced model plasma that with test screens that sending 24Fps to the display gives slightly better PQ also. This would tell me that my display does better 3:2 pulldown than the BD players I have tried with it. You are not actually watching it at 24Fps on ANY displays (nor in the feature either), and you are actually repeating the frames 5 times with a 120Hz display. It would flicker like crazy if the display showed it at only 24Fps.

You do not need to engage the extra smoothing features on a 120Hz LCD to get rid of the judder, because when you turn them off you are just getting the same frame repeated 5x on a 120Hz display with the smoothing features turned off. Many turn those extra features off with BD playback so it still retains the film like quality, and does not look like video. It is a personal preference as to which is better. ;)

nmaynan
05-21-2009, 04:31 PM
Do you know how the blur-reduction feature of the smoothing software works? Samsung TVs now let one turn on blur-reduction while keeping dejudder off--this seems like the best of all. with 1080/24p output on a 120hz (as you described) I don't need dejudder processing. But it might still be nice for blur-reduction. It seems odd to me to offer smoothing software that does dejudder when the BD player and TV both support 1080/24p. Is the dejudder software for systems that don't support 1080/24p?

PFC5
05-21-2009, 04:37 PM
I think it is just marketing personally. I would want 5:5 pulldown to get rid of judder, but not the smoothing that interpolates (guesses) what material would be in the 4 frames with the motion happening before the next real signal comes. It sounds like what they are saying is the opposite of what people would want to me.

ddipas
01-21-2010, 07:54 PM
Wikipedia is incorrect as all BD players CAN output 1080p/60Fps as well as 1080p/24Fps IF you have a display that can accept the 24Fps signal. most of the older model HDTVs cannot accept a 1080p/24Fps signal, so it would be suicide if BD did not offer 1080p/60Fps.

Nothing else outputs 1080p/60Fps besides BD (or the dead HD DVD format), so that shows yet another example of WHY wikipedia is wrong. ;)


The Wikipedia article cites Blu-Ray's own White paper on BD, which indicates that it does not support 1080p/60. The maximum resolution it supports 720p/59.94 and 1080p/24.

BrianO
01-21-2010, 11:05 PM
The Wikipedia article cites Blu-Ray's own White paper on BD, which indicates that it does not support 1080p/60. The maximum resolution it supports 720p/59.94 and 1080p/24.

The white paper was published well before the first players were ever released to the market. Numerous enhancements have been made to the Blu-Ray standard since then. OTOH, the detailed specs for current Blu-Ray models tell the current situation regarding what outputs the players are capable of producing.

Wikipedia is not a good source for up-to-date, definitive information on any topic.

HiDefRev
01-22-2010, 02:46 AM
So many articles on Wikipedia are out of date, it's hard to know which are and which aren't current. If you want EXPERT opinions and advice on High Definition ask HERE, not an out-of-date, online, user written "encyclopedia". And, by the way, my PS3 most certainly has the two options of 1080p/24 and 1080p/60. :2cents: