Sorry that no one saw your post and responded. It was posted to the Tips & Tricks sub-forum, and that's, well for tips & tricks. Problems should be posted to the main forum, where everyone will see them, rather than back here in a "closet."
Now with AVCHD material, it's tough to edit without a 2x2 PiP matrix. Throw in that material and you've going to need a very, very fast computer to handle it. I'd say something along the lines of a dual Quad-core Xeon, or i7 setup, with some very fast HDD's. For the media drives, a RAID 10 or 50 with a good RAID controller wouldn't hurt.
Tell us all of the specs of your machine. You might also want to follow the links in this ARTICLE.
Thanks for the reply! Yeah, I figured I should've posted at the root forum, instead of in the Tips & Tricks. I'll probably try to repost this there. Anyway...
I don't think this is a hardware issue. It's not about trying to preview in realtime (although the bug shows up there too, after rendering work area). I can wait as long as I need if that's what it takes. But this problem is in the final render result. Yes, I do have an i7 setup for this: Core i7 920, 6GB DDR3 1600, ATI 4830 512MB, and disk load spread out among: 1x 1TB 32mb cache, 1x 750GB 32mb cache, 3x 500GB 16mb cache. They're not in RAID setup, but again, I can live with the current rendering time, which is more CPU-bottlenecked than disk-bottlenecked.
This bug also exists in Premiere Pro CS4 when I tried it on another machine with that app (I myself don't have CS4).
I rendered a short, lower resolution video to show how this bug looks like.
Notice the main video in the background. It becomes jerky from time to time when there are more than one PiPs. Take a look around 0:20 where it becomes even worse after the 3rd PiP shows up.
I am looking for low-cost software to create a demo film with a 4-split screen. Were you successful at doing this with PE7?
I played your sample wmv and finally noticed the jerkiness.
My old eyes kept concentrating on the PIP's, as the jerk doesn't manifest itself at first, but once detected, it's a distraction (for sure).
I also do not believe it's processor or hardware bound at this point.
I don't work in HD, strictly SD, so I can't be of much help.
Once Paul_LS checks in, he might have a fix.
Perhaps going to a different video format or preset is the ticket (H.264)
BTW the small sample you posted looks and sounds very kool...
Thanks Kodebuster. Who is Paul_LS? Is he a dev on Premiere? When you say going to a different video format, do you mean the input format, or the output?
This is the full video (in low res) if you're interested: http://www.youtube.com/watch?v=GdzJhFyN0MY&fmt=18 Here, I worked around this problem by layering one PiP, render, create a new project, layer another PiP, render, and so on. Because the background video was pretty much re-rendered 3 times, it looks blurry.
Zarth, no, wasn't successful using PE7 if you need to render multiple hi-def PiPs at once. Worth to note that I tried with standard def videos, and the output was fine.
Adobe Support does not monitor this Forum, it is user supported.
Paul_LS is a frequent contributor who has experience with AVCHD, and HD in general.
My thought process was to convert from AVCHD to HDV as it places less stress on resources (if in fact that's what at issue).
View this link in the Premier FAQ's:
Again I don't play in HD (so take any advice from me with a grain of salt)...
Yes I agree with Kodebuster... converting to HDV will certainly make things work smoothly.