Judder?

Judder shows up on 24FPS recorded films, when displayed on 60Hz TV and I would imagine ESPN shows most of the programs recorded on 60FPS video? Same goes for all other video recorded or live broadcast like news, game shows, soap operas etc. so no judder here. Same goes for Xbox: games are 60FPS rendered by GPU, movies are send by internet at original 24FPS.
Since your TV is 120Hz, it can do 5:5 full up from 24FPS source, but the problem is all broadcast is 60Hz so 3:2 pullup is done already at the broadcast source.
So, assuming your TV is properly set for using 120Hz with 5:5 pull up (on LG set I think it's called real cinema and needs to be on, not sure what TV do you have) if you see judder then:
1. your TV can't reverse 3:2 pullup broadcasted at 60Hz back to original 24 FPS and then display it with 5:5 pull up at 120Hz at all.
2. Your TV can do it but needs to see proper flags telling it the original source is 24FPS film and those flags are not properly set when broadcasted. I believe there are some algorithms that can detect 24FPS film source without reading any flags.
I would speculate that since judder on 120Hz set is due to the way the video is processed, it has nothing to do with display panel like LCD or LED.
It could have more to do with the cost of TV, more expensive sets would have more elaborate and more capable video processors.
Besides I had seen tons of judder on my old CRT, so this is not new phenomena.

I see judder on my Pioneer plasma with 1080 24p material. It's the nature of the beast.

Is your Pioneer running a 3:2 pulldown or an even cadence when you notice the judder?

Thanks.

I notice it whether running 3:2 or at 72 hz when pure cinema is set at advanced. More noticeable with 3:2

Thanks for the response. I've experienced serious judder with some of my HD movies in 3:2 cadence. Perhaps I am overly-critical. I'll be getting standalone media player this weekend to enable Cinema Smooth, a feature in my Samsung plasma that will run 96Hz. I am hopeful it will reduce judder to a noticeable if not significant degree.

Hopefully TV manufacturers will come up with something, whatever technology, that will reduce judder to an extremely low level if not eliminate it completely although films are still shot at 24fps.

Cheers.

Name brands such as Samsung, Sony, and LG have been working on motion control for years and probably have better motion control than your RCA. I've read that Sony's Motionflow is the best. Samsung's was good on LCDs, but there have been some complaints on the LEDs. However that may be due to the Film mode setting folks are using.

I suggest reading professional reviews of the models you are looking at from CNET, Home Theater Magazine, and others available online. Also, take a look at the threads for those models. Finally, take a look at customer reviews from Amazon, etc. Good Luck.

Are you having a problem with 24fps Judder when watching slow panning scenes or are you having a problem with 3:2 pulldown conversion Judder when watching film content?
AFAIK you can you can not elimintate both types of Judder at the same time. You eliminate/reduce 24fps frame rate conversion Judder you need to use motion compensation(interpolation) and not 5:5 pulldown(cinema mode) to eliminate 3:2 Judder.
If you use 5:5 pulldown to eliminate conversion Judder you can not use motion compensation(interpolation) to eliminate 24fps frame rate Judder.

Your problem is that you do not like frame interpolation motion control since it causes the SOE since it smoothes out the 24fps content.

My HD LCD has a separate lip-sync adjustment function. Using it I only have lipsync problems with ABC news clips from locations other then the local ABC broadcaster.
Cable only channels are more likely to have problems since they try and use the minimum possible bandwidth.
You possibly will be happier with a Plasma since plasma is not a "show and hold" technology.

Screen size or backlighting method has no effect on judder. You said you don't see it on your 32" LG (presumably with the same source material) so it's fair to assume that something other than the larger screen size or led vs lcd backlighting is causing the problem on your RCA.

It is true that some pq problems are more visible on larger screens but jerky movement shouldn't be one of them. I have seen very jerky movement (not panning movement, just ordinary movement) intermittently on high end Samsungs that could not be made to go away with any interpolation settings or by turning off interpolation altogether.

Three years ago, those 2 cable channels used to be notorious for judder. However, in my area, TNT is rock solid on hit prime time shows like The Closer, etc.

For awhile we were watching Murder She Wrote reruns on Hallmark back then, and it was juddering like crazy, no way AMP on my Samsung could get rid of it. I think they removed frames frames to squeeze in a few more commercials. It seemed to happen on outdoor scenes when there was no dialog. So we wouldn't notice.

PS: If you have an HDDVR, make sure to record some bad shows in case you do your 2-TV comparison.