Speed ramping

A

anchoricex

Member
I need a decent guide on speed ramping for my FS700. From what I've gathered I should shoot at 240fps (which is conformed to slow motion in camera) and speed up in post to normal speed. Can't figure out how to do this for the life of me.

Tools I have at my disposal: Premiere Pro CS6, After Effects CS6, Twixtor Pro

Any help/guidance would be greatly appreciated.
 
Easy peasy. Take your 240FPS clips. Drop them in a 24fps timeline in CS6. Everything will be at 10x slo motion.
Divide the slo motion clip up with the blade tool. For sections that you want to play in 'normal' speed, speed
them up 10x. Boom, instant speed ramping.
 
If you want a smooth curve in between speed changes, bring the clip into Ae, right click on it and enable time remapping. Then place keyframes at the points you wish to change speeds and then drag your keyframes closer together for the fast bits and furthur apart for the slow bits. Finally, change the keys to ease in and out where appropriate to get smooth transitions.
 
If you want smooth speed transitions in Premiere on timeline drop down option from opacity to "time remapping" then speed ramp away...
 
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alaskacameradude said:
Easy peasy. Take your 240FPS clips. Drop them in a 24fps timeline in CS6. Everything will be at 10x slo motion.
Divide the slo motion clip up with the blade tool. For sections that you want to play in 'normal' speed, speed
them up 10x. Boom, instant speed ramping.
Click to expand...

Where do you select to put the clip at "10x" speed ?

Kyron said:
If you want a smooth curve in between speed changes, bring the clip into Ae, right click on it and enable time remapping. Then place keyframes at the points you wish to change speeds and then drag your keyframes closer together for the fast bits and furthur apart for the slow bits. Finally, change the keys to ease in and out where appropriate to get smooth transitions.
Click to expand...

With this method how do you select the ideal speed to get slowmo'd footage up to "normal" speed ? I understand this involves either dropping frames or blending frames, so what is needed to make the footage look like it was originally recorded in 24p ?
 
Just do the math on it, you want the realtime parts to be 1/10th (24fps/240fps) the length they start out as. If there's 200 frames between the clip start and the speed change, slide those keyframes together until they're 20 frames apart and that section will play back in realtime.
 
starcentral said:
Dividing the clip using the blade is NOT the way do to this if you want to ramp speeds, please see my post #4 for info on how to do it in Premiere.

For more info:
http://tv.adobe.com/watch/no-stupid-questions-with-colin-smith/time-remapping/
http://www.premiumbeat.com/blog/time-remapping-premiere-pro/
Click to expand...

Using the blade tool works, it just doesn't have the smooth transition between 'normal speed' and 'slow speed' that
using bezier keyframes does. I sometimes actually like the look of something suddenly 'slamming' to a halt (actually
slamming into slo motion) better than the smooth slow down, it seems better in extreme sports or such. To the OP, I
have remapped the Premiere keyboard shortcuts to the FCP 7 ones, so I click on the segment and hit
command J, which brings up the speed dialogue box. However, I would suggest looking at starcentral's links,
as well. There is a time and a place for everything, gradual slowdowns look better in many cases as he has suggested.
 
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yes you are right you can "jump" from one speed to another, but I guess when he said speed ramping I assumed it was more of a smooth time remapping/ramping changing speed to speed using a ramp.

Cheers,
 
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