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Retiming / Slow mo effect
I have access to shoot with a Sony Z1U. I do composite w/ After Effects 6.5 and edit on Premiere 1.5 – window XP.
I want to play around with retiming effects much like the ones you see in a lot of music videos to make it look as if things are slowed down tremondously. Some have suggested RealViz REtimer, others Twixtor and others FluidMotion (but I think that’s for AVid?). Anyway any advice on this subject would be helpful – even as to what settings I should use on that camera i.e. 30p or 60i ?
Thanks!
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3 Replies
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Unless they’ve updated ReTimer, I’ve come to prefer Twixtor 4.5, at least on a shot of two kids running through high grass. I recommend you download demos to see which plugin works better on your specific footage.
Keep in mind that not all footage can be slowed down if the motion can’t be interpolated because the information just isn’t there. For instance, the spokes of a blurred mag wheel of a fast-moving car just don’t exist on the film.
If you shoot 60i, you have a better chance of getting the temporal information you need.
Try to make the action go as slowly as possible as well. You can always speed it up in post.I haven’t tried this, but you might want to shoot with a high shutter speed to avoid motion blur and get sharper (motion-wise) images that are easier for the software to interploate.
I recommend you do some tests with your own footage.
Anybody else?
Steve -
I use Twixtor to both great success and miserable failure. In a dolly shot up a hospital patient on a gurney, it created a beautiful smooth illusion of a very slow dolly. On a slow zoom of a greek temple, it failed miserably, creating bouncing distortions 30% into the frame, not just in the edges. It was weird how poorly it did with pixels that were easily apparent. Try the trial plug-in. If it works for your project, great!
I’ve had similar varied results with the RE:motion Blur (or whatever it’s called).-Greg
Antifreeze Design
https://www.antifreezemotiongraphics.com -
I’ve seen similar mixed results on an aerial flyover of a Mayan temple in a forext. Twixtor did a beautiful job on the trees, but not on the temple. The details on the temple gave it trouble, probably because they were lines about 1 or 2 pixels apart, so Twixtor wasn’t sure if the temple was moving or not from frame to frame.
It’s similar to the spoked wheel effect, where the number of spokes and the rotational speed conspire to make the wheel appear static.
Of course, there may have been a way around my problem, but I was in a rush. 😉
Steve
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