View Full Version : how to get superslomotion in hollywood movies?


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Dmitry Kichenko
February 11th, 2005, 08:41 PM
Yeah, actually I make music on my PC myself. Not the Fruity kind of thing. Cubase, a lot of VST FX and VSTi-s, post-mastering in Wavelab. That's what my problem is now - I doubt which direction to choose to stick with: film, music, or, preferable, both. You always need soundtracks for the films, don't you. :)

Josh Barker
February 25th, 2005, 12:22 PM
Shoot at 60i or 60p. If you are working with 24 fps. You already have 40% slow motion (24/60=.4).

What I do is shoot my footage in ALL 60i. I first deinterlace the frames, so my 60i is now 60p (using motion compensation-- AviSynth). Then convert the scenes with no slow-motion from 60p to 24p. The slow motion scenes I want, I will isolate and just use the script:


AVISource("x:\your_dv.avi")
#deinterlace 60i to 60p
TDeint()

#take 60 fields and put them on a 24p timeline
AssumeFps(23.967)


You now have your 60p material sitting on a 24p timeline (which is 40% slow motion).

Dmitry Kichenko
February 25th, 2005, 04:43 PM
That's swell. Also, for fast moving objects the shortest available shutter speed should be set.
By the way, what camera do you have, Josh?

Josh Barker
February 25th, 2005, 10:47 PM
I have a Sony VX2000. It works really well. I usually bring it in to AVISynth to deinterlace, color correct, convert to 24p, and sharpen it (being sure not to over-sharpen and create halos).

Joe Amato
March 3rd, 2005, 01:55 AM
my advanced magicpix shoots silky smooth slow when used during the day

Joe Amato
March 3rd, 2005, 02:00 AM
On my panasonic gs-400

Mihnea De Vries
March 4th, 2005, 04:10 AM
there is a plugin called Twixtor, this plug is avesome for slomo, it interpolate nearest frames to generate other frames. has a lot of algorytms that analize the objects in each frame and theyr movements, results are very good, it was used in Blade and other actions movies for time related sfx

Jan van den Hemel
March 8th, 2005, 07:17 PM
I've just given that Slowmotion software a try (the one that's actually called SlowMotion) and it's pretty cool. The good thing is that it is very easy to use - there's pretty much nothing to configure, except the export location and compression type... So it either works or doesn't, depending on the clip. It seems the more movement is already in the clip, the more you'll notice the "morphing" going on. But for such a cheap piece of software, it works really well.

Dmitry Kichenko
March 8th, 2005, 08:04 PM
I've played with a demo of Twixter over the weekend, and it's really awesome.
It is a lot better than Retimer, though no motion blur is still preferable.
As opposed to what many sources say, I got the smoothest results with the interlaced footage. Many artifacts started appearing around my actor after I deinterlaced the footage with Magic Bullet, and render times increased at least by a factor of 2, but image looks smoother when deinterlaced.
I need to obtain some more footage with various straight and diagonal lines on the background and see how things work out with the same footage deinterlaced, but so far I can say that I'd go with slowing the interlaced footage down and deinterlacing it afterwards. At least, that's how it works best for me at this point.

* Note - Retimer is quite the opposite of Twixtor, and with interlaced footage, even with the input fields set to lower or upper, the results are horrible. Though I like the Twixtor's algorithm more. I got less artifacts with deinterlaced footage from Twixtor than with the same footage from Retimer.

Jose di Cani
March 15th, 2005, 05:23 AM
NOt lots of options are being offered today! A pitty. Twixtor is really the best solutiong. Even Adobe premier or vegas can't handle nice super-sexy-slo-motion scenes. I am talking about an easy preset.

I am testing some other solutions out. I am working with mixing 2 identical scenes one on top of the other, adding extra scenes between scenes and using motion blurring as a tool. Very hard to get that slomotion but it also depends on your footage (background-foreground).

Dmitry Kichenko
March 15th, 2005, 02:01 PM
I don't think there is Any "Click once and get the best results" solution for anything involving art. Especially in mid-end apps range like Adobe Premiere or Vegas.

Jose di Cani
August 14th, 2005, 03:59 PM
I just bought twixtor PRo 4.5 plug-in for adobe after effects 6.5. I must say that I have been testing with every kind of camcorder. Even my webcam shots are bad in quality but playing around with them, you get to know the power of twixtor. It's an expensive plug-in but the best you can get for slo-motions (example: blond girl from destiny child's kind of videos, with J-ZEA).

The motion vector and blend options are very sophisticated. Of cours, you need to go through a long tutorial but it is worth while. You can downlaod the tutorial at their site. I am now trying to create some slow micheal jackson dance moves and see what I get. I am also gonna try some slapping/kicking action . Keep it simple, otherwise it will to hard to get good results.,

Nothing more.

Dmitry Kichenko
August 14th, 2005, 04:56 PM
It's been a while since I made that post, but I have tested Twixtor further and it indeed seems like the best slow mo solution. Same golden rules - steady shots, the least artifacts possible, and you can get even ultra slow mo shots.
I bet with that addition to DVX100 that let's you record uncompressed signal, you can get simply jawdropping ulta slow-mos.

Eric James
August 14th, 2005, 07:10 PM
Hey Guys,
I've been testing with shake 4 and I cannot believe how good the slow-mo is. Here is a test I did with a car driving up at 20mph. This was shot on an FX-1:

http://www.expertmagic.com/dvinfo/911out.mov

THIS IS VERY SLOW-MO, you need to watch very very close to see the car moving. If you still can't drag the playhead back and forth to see the movement.

I also first separated the fields to frames, then comformed to 24p. So I was able to start out already at 40%. Overall this is running at .4% of real time, which is just insane. Basically slower than I could ever need.

Thanks,
Eric James
http://www.expertmagic.com/

Dmitry Kichenko
August 14th, 2005, 08:44 PM
Yeah, that's very similar to what I got with Twixtor, but even slower!
Awesome.
You guys with HD cams - next assignment to test Twixtor on:
Try something that consists of many particles. Like an object dropped in water or glass breaking in pieces. You of cors have to use the shortest shutter setting you have to not have motion blur.
Also, another cool shot is someone with long hair jumpin up and spreading their arms and legs in the air. I've tried that one, and it turned out pretty good, only some DV artifacts affected the overall image movement.

Eric James
August 14th, 2005, 08:50 PM
Gotta love technology!

Just a year ago I wouldn't have thought this type of slow-mo from video was ever possible.


-Eric James

Jim Rog
November 20th, 2005, 05:27 AM
Yeah, that's very similar to what I got with Twixtor, but even slower!
Awesome.
You guys with HD cams - next assignment to test Twixtor on:
Try something that consists of many particles. Like an object dropped in water or glass breaking in pieces. You of cors have to use the shortest shutter setting you have to not have motion blur.
Also, another cool shot is someone with long hair jumpin up and spreading their arms and legs in the air. I've tried that one, and it turned out pretty good, only some DV artifacts affected the overall image movement.

Hello

i would be interested to see this particle effect you talk of can anyone try this and post the results up please.

thanks

Karl J Martin
November 21st, 2005, 12:29 PM
There's a super-slo-mo camera system from about twenty years back, which ran the film so fast that a mechanical shutter was out of the question...so the engineers devised a spinning prism system that laid each frame onto the film as it sped past the aperture, without slowing or stopping for each frame.

Of course, afterwards every frame had to be scanned and re-registered onto standard stock; the prism-approach introduced a lot of jitter.

Best example of footage from this camera that I've seen, is the "Genesis Explosion" from the end of "Star Trek II: The Wrath of Khan." They blew up the miniature using white phosporus, and you can distinctly see the spherical shock front travelling outwards as the model disintegrates...

Jim Rog
December 6th, 2005, 03:09 PM
Yeah, that's very similar to what I got with Twixtor, but even slower!
Awesome.
You guys with HD cams - next assignment to test Twixtor on:
Try something that consists of many particles. Like an object dropped in water or glass breaking in pieces. You of cors have to use the shortest shutter setting you have to not have motion blur.
Also, another cool shot is someone with long hair jumpin up and spreading their arms and legs in the air. I've tried that one, and it turned out pretty good, only some DV artifacts affected the overall image movement.

Hi

Can anyone try this and post it up please i don’t have twixtor and would be interested to see how well this works.

thanks