I'm having this playback issue in AE CS3. I have a shape, or image or something very simple, which moving from left to right. Yeah, yeah, yeah, I know... you might say. Rest assured, I've been researching this for a couple of days now. Posted and read forum topics over at creativecow.net, but I don't have a judder issue as most people describe it.
When I play back a short basic animation every approximately 4.5 seconds a "traveling wave" like effect goes through the animation from bottom to top. Since it happens approximately 4.5 seconds, it means that it's separate from the animation itself, so it doesn't happen at the same locations. It changes. I thought it has to do something with the monitor refresh rate. But it's annoying that even if I output it to uncompressed QT or lossless AVI, it's still there.
Since pictures say a 1000 words - or something rather - I've filmed my screen with my digital camera and uploaded to youtube. I have to say that on the LCD screen itself, the phenomena is much more pronounced then what you can see on the filmed result - because of low quality and compression, etc. But if you pay close attention, you can see it. Try to watch it in full screen and HD to see it somewhat better:
I've also attached the avi file (3.75M - DivX - 640x480) which is not compressed as much as youtube. You can download at the end of the message.
On the video at about 3, 8, 13, and 17 seconds you can see a "wave" traveling from bottom to top and you can see that the red star kind of "dancing" because of it. Again, I'd like to reiterate that it's really bad on the screen, so don't judge based on the video saying "it's barely visible".
I've motion blur enabled but it has actually nothing to do with motion blur.
I've read a lot of people complaining about judder and tearing, etc. It's kinda like tearing, but doen't happen towards the direction of motion. It happens only from bottom to top and only every about 4.5 seconds (which explains why you can see it on the youtube video at 3, 8, 13, and 17 seconds).
A little about my setup and what I've tried to do so far.
I have a Dell LCD monitor (E228WFP). First I didn't have the monitor driver installed (just the default Microsoft driver), but after installing the Dell driver, it made no difference what-so-ever. I see the same issue at work on a completely different, monitor, too.
I've tried to change the refresh rate of the monitor. Not much choice. Either 59 or 60 Hz. So that didn't change a thing.
I had the v185.85 nVidia driver installed (dated May 6, 2009). Checking the nVidia site, I've seen a new driver posted, so I've installed that (v186.18 dated July 2, 2009) which didn't help (my video card is nVidia 7900 GT/256M). I went back to an older driver just to test (v175.19 dated July 2nd, 2008). Same thing.
In the nVidia control panel I've turned on various setting for AfterEffects, such as vertical sync, triple buffering, and threaded optimization (and any of these combinations). None of these helped.
I am clueless at this point. Anyone have ideas?
WinXP Pro SP2 - 32bit
Intel Q9550 2.83GHz/quad core/4G
AE CS3 (188.8.131.52)
nVidia 7900 GT/256M (v186.18 - July 2, 2009)
Dell E228WFP LCD using Dell monitor driver
tearing.avi 3.7 MB