Jitter / Stutter / Frames Missing when playing video on TV.

[AtariBaby]

Other forums, including Apples, are rife with video playback complaints regarding the latest Lion Mini's when hooked up to their televisions, so I'm surprised to see nothing here on the first couple of pages. Nonetheless, I'm hoping to get some help from this specific group of mini users.

Hooked up to my Panasonic TC-P65VT30 Plasma TV, video playback is horrible. It's at best, mildly jittery. It's most noticeable in scenes where the camera pans left or right, up or down. It's a noticeable jitter or stutter, as though frames are missing. If I have certain programs running while watching TV, it's downright nauseating to watch. But even when running with just a video player, it is annoyingly noticeable.

The most common solution is to turn off any enhancements in the TV settings, but I don't seem to have any to turn off, and I have had this set professionally calibrated so I'm hoping I don't have to do anything to change that setup.

It happens whether I use thunderbolt or hdmi.

It seems to happen with a wide variety of video sources.

Mac OSX 10.7.3
2.7 GHz Intel Core i7
4GB 1333 MHz DDR3 RAM
AMD Radeon HD 6630M 256 MB

I'm about to sell the thing and get a Popcorn Hour or similar box if I can't get this resolved. Any ideas?

I'm going to completely reinstall from scratch and see if that helps.

[Smithcraft]

Which players have you tired?

SC
_________________
Grumpy old man of computing.

[Desktop] G4 mini - 1.5Ghz 1GB 80GB HDD - Newer miniStack v2 500GB - 10.5.8

[Media System] Intel i5 mini - 2.33Ghz 8GB 500GB HDD - 4 x Hitachi 2TB HDD in a qBOX-SF - 10.7.5 (Thanks Phil!)

Make sure it has pins!

[AtariBaby]

Thanks for asking:

The problem occurs on MplayerX, VLC, and Quicktime, that I can think of off the top of my head.

[Y-Guy]

How are you connecting to your TV? HDMI? Do you have other applications running in the background?
_________________
iMac 24" 2.4 GHz 4GB | Logitech S530 | Z-2300 speakers | NewerTech Guardian MAXimus RAID
MacMini HTPC 2.26 GHz 2GB | Panasonic Plasma TV | Logitech diNovo Edge | Mercury Elite-AL Pro 800
AppleTV1 unhacked | Panasonic LCD

[AtariBaby]

Update: Here's what I did. I reformatted the sucker and started from scratch. Somewhere along the way it got screwed up. I don't know how or why, whether something was wrong from the beginning, or if I installed something that screwed up along the way of trying and failing to make an HTPC!

Tests so far:
1) Played a few files on Quicktime with Perian, no jerky playback.
2) Currently viewing files on MplayerX, to see if that's okay. Looks good so far.

I'm going to image the file every time before I make a change, so I can fall back if the problem crops up again.