24 frames per second 24p?

[RockChalk]

When I start to play a blu-ray on my ps3 it says 1080/24hz I have a 120hz television is that how the blu-ray is supposed to display or is there a setting I have to change on my ps3?

[dolphinc]

24 x 5 = 120Mhz. The TV will broadcast it 5 times the output of the BD player. That's what gives you that really smooth almost 3d effect.

[pmac]

It sounds like you have it set to 24 fps on the PS3. You can have it static or you can set it to AUTO, which is my preference. It is under options then video settings i think it's called. Someone will correct me if I am wrong. But there are numerous settings under Video Settings (or Display Settings), and one of them is for the 24fps option, on or auto.

[RiseDarthVader]

Movies are filmed at 24 frames per second. So to get that same experience you set the PS3 to output in 24fps if thats what the original content was recorded at.

[RockChalk]

thanks for the help I see it now thanks guys

[Rob J in WNY]

Originally Posted by dolphinc

24 x 5 = 120Mhz. The TV will broadcast it 5 times the output of the BD player.

This would be called 5:5 pulldown, which theoretically eliminates judder on a 120Hz TV. With a typical 60Hz refresh rate on most TVs, the pulldown ratio is 3:2 (or 2:3), meaning that one frame is repeated 3 times, followed the next frame repeated 2 times (or vice-versa). This creates a phenomenon called video "judder," which basically creates a slight stagger in the motion you see on a 60Hz television. It's especially noticeable on scenes with slow panning visuals. 5:5 pulldown repeats each frame 5 times evenly, making for smooth frame transition and judder elimination - theoretically.

We have been dealing with judder for many years with our old CRT TVs (which also operated at 60Hz), but the high-resolution of our flat-panel displays, combined with higher resolution (and High Definition) video sources cause judder to be very noticeable. 120Hz screen refresh rates (as well as other multiples of 24) have been created to combat it in many higher-end flat panel TVs and monitors.

One of the nice things about 120Hz is that 120 is also a multiple of 30fps and 60fps, which are utilized by other video sources. This is supposed to ensure that a 120Hz screen will eliminate judder from a wider variety of video sources - again, theoretically.

Some 120Hz TVs don't use 5:5 pulldown on a 24fps source, unfortunately. Instead, they will "double" a 3:2 pulldown process. It is essentially a 3:2-3:2 process (equalling a 5:5 frame ratio), and so does not eliminate judder.

One important thing to mention is that 120Hz televisions always operate at the 120Hz refresh rate, regardless of any "motion enhancement" features which may be available on such TVs. The "motion enhancement" only serves to create intermediate video frame images which are placed in between the actual source frames, which does help to smooth motion, but often causes what has been called the "soap opera" effect. The insertion of the interpolated frames makes film-based video look more like "live" or "3D-like" video. Some love this effect, while others do not care for it at all. Depending on the source video, the motion enhancement function can also introduce video artifacts as well, which can detract from enjoyable viewing on occasion.

The result of using any motion interpolation settings is an individual preference, but it must not be confused with the 120Hz refresh rate of these TVs. In other words, turning off any motion enhancement feature does not make a 120Hz TV operate at 60Hz. It's always going to refresh at 120 times per second.

[Hale-Bopp]

I could use your help with these questions...

Originally Posted by Rob J in WNY

Some 120Hz TVs don't use 5:5 pulldown on a 24fps source, unfortunately. Instead, they will "double" a 3:2 pulldown process. It is essentially a 3:2-3:2 process (equalling a 5:5 frame ratio), and so does not eliminate judder.

How do I know if I have one of these TVs (using 3:2-3:2, instead of 5:5)?

The result of using any motion interpolation settings is an individual preference, but it must not be confused with the 120Hz refresh rate of these TVs. In other words, turning off any motion enhancement feature does not make a 120Hz TV operate at 60Hz. It's always going to refresh at 120 times per second.

Is this true even when my TV says it's outputting at 60Hz?