Slow Motion Test

davecon

davecon

Member
Hi All,

I know there's been a bunch of questions about creating slow motion from either 60i or 30p footage in a 24p timeline. I've been doing some test with the guidance of my bible - Barry's DVX Book. This is what I tried...

Boring stuff, just water running - This was done before my coffee...

Shoot Quick 60i Test - 7am this morning - (Shutter at 1/250 instead if 1/120)
Digitize at 29.97
Drop it into a 24p Timeline
Deinterlace
Drop Speed to 40%

Here's the link...

http://www.puritano.com/slomo.htm

Disjecta also posted a clip in "Cinematography"...

http://www.dvxuser.com/V3/showthread.php?p=418234

Cheers
 
Hi- I'm a new member, but I've been reading this forum for a long time. I know you seem to indicate it's been covered before, but I couldn't find my answer in a search. I'm very interested in this 60i in a 24P timeline for slow motion, but cannot figure out how to do it in Final Cut. All my attempts are clearly not getting the right results. Can anyone give me specific instructions for FCP?

Thanks for posting your test results, btw. I've been known to do test shoots before morning coffee myself.
 
I too am a new member, and would like to ask a dumb question. I dont feel its reason enough to start a new thread. so if you dont mind, id like to steer off the path a sec.

i see 24p, 60i and such, and I realize that they are frames per second. (24 progressive, 60 interlaced). But you stated that you had your shutter at 1/120. what is the correlation between the shutter and fps.

shutter speed determines how long the light hits the sensor. Does frames per second determine how many frames are exposed to the shutter "action" a second? My impression was that they were the same thing. someone end my confusion:embarasse
 
oh jeezus im a moron. one is for "playback" purposes and one is for the actual shooting purpose. Dont tell anyone i asked this question. we'll just keep it between you and I.:lipsrseal:cheesy:
 
xssight said:
Can anyone give me specific instructions for FCP?
Click to expand...


here's a good example of 60i slow motion for FCP. this clip first shows a 60i clip simply dropped onto a 24fps timeline and slowed to 40%. the next shot is the same clip but it was first deinterlaced, turning each of the 60 fields into a full frame using JES deinterlacer, then time remapped from 30fps to 24fps using cinema tools, then dropped onto the same 24fps timeline and played at 100% (natural 40%). notice how much smoother the second one is. the third shot is the first two clips played at the same time for comparison. pause it and look at it frame by frame and you will see the weakness of motion estimation on the top clip. the bottom clip is true slow motion playing every frame that was captured. no duplication of frames. maybe you can do it the first way with other NLE's (i don't know) but if you are using FCP, you have to do the 3 step thing if you want the smooth slo-mo. [disclaimer: if i am missing something and there is an easier way to do this to get the same results, someone please let me know]

QT7 required.

http://media.putfile.com/tennis-ball-slo-mo-test
 
The main points to remember when shooting is 60i at 1/120 shutter or higher. If you don't use the proper setting in the field or studio, the point is mute.

The main points to remember in post is to digitize at 29.97, use a 23.98 timeline, deinterlace (i actually use natress effects), then slow the speed to 40%.

You can do the same thing in a 60i timeline, but the speed is lowered to 50%.

Oh yeah the best way to get good, like anything else in this world is to practice, practice, practice.
 
To cover the shutter speed question, you need to shoot 1/120 at 60i to get the "film look". Barry's book "The DVX Book" does a great job breaking this process down - both newbies and seasoned pros will benefit. Again... PRACTICE, PRACTICE, PRACTICE.

To help understand technical aspects of shutter speed as it relates to the DVX, it helps if you've had some experience shooting film.
 
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