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Working out time remapping vs. real time…
Hi all,
Just a quick question relating to a feature in AE. I’m about to shoot some stuff in slow motion and was wondering if there was a way (something like a mathematical equation, or a nice converting site or something!) to work out the relation of the fps to the real time…
For example, I am filming at 4000fps. and editing at 25fps – I want something to happen in the slow motion that occurs 30secs into the 25 frames edit. Now obviously when filming this I need to work out at what point (i.e. how many seconds I’ve been filming) that this will happen (probably one or two seconds in I presume)… Is there a way to do this without messing around with the time-remap function and work out the timing so I can do it in-camera (with the aid of a stopwatch?!). I thought I’d ask here as I’m sure some of you will have come across this before with playback at higher fps counts then shooting etc.
Hopefully that was clear enough!
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2 Replies
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I am not quite sure what you are asking. If you are shooting at 4000 fps and then slowing that down to 25 fps, you are making 1 second of original footage last 160 seconds. It is a simple mathematical computation. If you want to know when something will occur 30 seconds into the slowed down footage, all you need to do is figure out how many frames 25*30 is, which is 750 and then divide that by your shooting fps of 4000, which will tell you that your event will occur .1875 seconds into shooting. Not sure your fingers are quick enough to be accurate.
I may have misunderstood your question, but that is how I read it.
Best of luck
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maybe this;
import your footage in AE,
interpret it as 25 fps!! .
drag your footage in your comp,
add a slider control to your layer,
name the slider “Start_seconds”,
enable time remapping on the layer (sorry;-),
add the following expression in the Time Remap:fps1=4000;
t1=effect(“Start_seconds”)(“Slider”)*fps1;
(time-inPoint)+framesToTime(t1, fps = 1.0 / thisComp.frameDuration)So, the layer in you comp will start running at the layers inPoint in the timeline, but, the slider in that layer controls the “Real-Time” starting Point of the footage and runs it from there in slow motion.
hope this helps,
Jan
cya,
Jan
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