Slow motion test

holymexicobatman

holymexicobatman

Well-known member
Hi. Im new to this site. I just got my dvx today. Im already loving what im seeing through the viewfinder! Anyways, Im getting ready to shoot a video for a local music artist and i wanted to do some slow motion shots. not a whole lot, only about 70-80% slower. Does anyone have any other suggestions other than just stretching the 24p footage? I've heard rumors that shooting 60i and then slowing it down 40% in a 24p timeline is one possiblity. any other ideas or suggestions when attemping this method? and does anyone have any sample footage of this? thanks. Also, anybody know of a site where they lay out a good step-by-step instructional on building a skatboard style dolly and track? thanks again.
 
speaking of 60 i. I recorded some footage of movements in 24p 30p and 60i then played them back in each mode according to barry greens book. The 60i footage slowed down looked only slightly less choppy than the 24p. All these played back in a 24p timeline. Whats going on? Doing something wrong?
 
there are some things you have to do that aren't explained in the book. i guess it depends on which software you are using to edit but i know that in FCP, bringing a 30p or 60i clip into a 24fps timeline will simply throw out frames to keep the duration intact resulting in choppy footage. then if you slow to 80% or 40% respectively, it's not smart enough to pull the dropped frames back in. it will just duplicate frames just as if you were dealing with 24p footage.

so here's how i do it. i open my 30p clips in cinema tools and reset the timecode to 24fps using the "conform" button. then you just play the conformed clip at 100% on a 24fps timeline in FCP and you get natural 80% slo-mo. for 60i stuff i use "jes deinterlacer" which is a freeware thing (google it). to deinterlace the footage and turn each field into a full frame. this will produce a 30p clip which is twice as long as the original, and at half speed. then you take the new clip into cinema tools and conform to 24fps. play this clip at 100% on a 24fps timeline and you get natural 40% slo mo. super smooth.

i used this technique in my latest short. check out the exploding light bulb sequence about 2/3 the way through and you will see the converted 60i thing. note that some of this footage is actually at super slow 20% so there is some strobing but much better than if i had shot at 24p.

http://www.dvxuser.com/V3/showthread.php?t=45769
 
that must be the problem. there must be a way to fix this in adobe premier pro 1.5 ?
 
are you mac or pc? because if you are mac, then cinema tools is the key. then you have a 24fps clip that will play slow in any NLE
 
i just got my dvx... so i haven't tried some slow stuff yet but when i had my 2100 i had no problem slowing stuff down to what ever speed i wanted.... i always had problems when i tried the 1/250th shutter. but when i just let it do the automode i was able to slow the footage to any speed i wanted and it was butter smooth. this coming weekend will be my frist try at the slow mo thing so i will try to post some results and maybe shed some more light on the subject.
 
holymexicobatman said:
again--does anyone know of any good skater dolly DIY guides? thanks...gotta build one by this friday.
Click to expand...


if you mean the 3 wheel p+s technic type, check the diy forum here and look for a huge thread by teddybear that explains it all. i built one to his specs and it rules.

if you mean a skateboard wheel track dolly, there are a kajillion threads.....
 
yo check out a project i did a little while back. i went thru several iterations trying to find the best slo-mo that I needed for a music video (I didn't want to be forced into either 40% or 80%).

I took 30P / 120 footage and reduced by 70% and came up with some slick smo-mo (but I also ramped up the audio so that when I did 70% in post the audio was at normal speed)

www.toasterinthetub.com/video/lava.mov

Rock.
 
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