Hyper Speed Cams Answered

Ok heres my problem im making some videos and i was wondering how can u make a video go slow mo ~does any one have any software for this? ~is it possible ~can i do this without hyper speed cams? Thanks Peace~ Zero

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hedgehog742

12 years ago

http://www.windowsmoviemakers.net/Tutorials/HowToVideoEffects.aspx

NachoMahma

13 years ago

. I've only done a little video (mainly VHS to DVD), but I think nearly all video editors will allow you to slo-mo/still/fast-fwd. I'd look for an editor at SourceForge <http://sourceforge.net/>.

VIRON

Reply 13 years ago

Slo-mo: It's easy to do with a VCR. Never saw it done on a PC.

zero0928

13 years ago

any one have any software to allready saved movies that i can screw around with???

Tool Using Animal

Reply 13 years ago

I don't have any, but there's a commercial product called MotionPerfect that does a better job then average, it creates inbetween frames to smooth the video.

westfw

13 years ago

A typical video camera only takes 30 frames per second of video, so the only way you can get "slow motion" in post-production is to have the software repeat each frame multiple times. As far as I know, this is a pretty common feature (Apple's iFilm has it, for example.) It's reasonably useful for things like sports, but pretty useless for high speed events... Some of the newer digital cameras do 60 fps. I'd love to see faster frame rates in a relatively low priced camera, say by doing B&W three-way interleaving off the three sensors in a triple-CCD color camera, but I don't think anyone does this. The bandwidth requirements get pretty massive pretty quickly. I vaguely recall seeing some specs for the high-speed cameras used for slow-mo instant replays at sporting events; IIRC, they store their video in something like 70 Gbyte of RAM memory (huh. That's not nearly so much as it was back when I remember reading this.)

Tool Using Animal

Reply 13 years ago

Here's a thought, what if you took say ten webcams capable of 30fps, pointed them at the same target with an angle theta between the cameras sufficiently small enough that they all appeared to be recording the same image, and PRESUMING you could start them recording 1/300 of a second apart, take the resulting video and interleave them.

NachoMahma

Reply 13 years ago

. Step away from the bong! LOL . If you removed the cases, theta would be reduced. . If the cameras are perfectly matched, it should be fairly simple to build the trigger circuit. Use only eight cameras (one byte) and microcontroller control gets a LOT easier. . Combining the vids should be pretty easy but may be very time consuming. Just guessing here; I haven't done much with video.

Tool Using Animal

Reply 13 years ago

Step away from the bong! LOL (?)

Tool Using Animal

Reply 13 years ago

nevermind, it's been done high speed dense camera array

westfw

Reply 13 years ago

That was another idea I've had, but alas most webcams are pretty impenetrable. The Stanford project is neat, but it would be neater to have something that would doable by people with only moderate levels of technical expertise and off-the-shelf components. (heh. Cell phone cameras should work nicely.) As an added idea, I'm not sure it's necessary to synchronize the cameras; put a high speed counter display in the field of vision and you can see which camera happens to snap first/second/etc...

NachoMahma

Reply 13 years ago

. The counter idea might work, but I imagine that would increase your production effort/time by at least two orders of magnitude. Unless you can figure out how to do your "registering" one time at the beginning.

trebuchet03

Reply 13 years ago

I don't get it either.... In any case, cool link -- too bad they didn't make a software package for the rest of us :p But I had no idea about the whole rolling shutter thing.... That explains why my web camera distorts on moving objects the way it does :p

NachoMahma

Reply 13 years ago

. It sounds like something someone would come up with after imbibing herbal intoxicants. Ie, if this weren't a DIY site, it would be a hare-brained scheme. But since this is a DIY site (as far as I can tell everyone here is hare-brained to some extent heehee), I took it seriously and offered some suggestions.