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“Random jump cuts”… but at irregular intervals?
Hello there,
I’m trying to do an effect very similar to the one produced by the”random jump cuts” expression at motionscript.com.
All I’d like to change from that expression is the interval between two random jumps. In that code it is always the same (segDur = .5;). I’ve tried something like segDur = random (.4,.6) which should produce something equivalent but actually it results in very fast cuts, as if the expression was being evaluated all over again every new frame. Any idea?Julie.
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4 Replies
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Something like this should work:
minDuration = 0.3;
maxDuration = 0.7;
minVal = inPoint;
maxVal = outPoint – maxDuration;tEnd = 0;
n = 0;
seedRandom(n, true);
preRun = random(maxDuration);
while (time + preRun >= tEnd){
n++;
seedRandom(n, true);
dur = random(minDuration, maxDuration);
tEnd += dur;
}
t = time + preRun – (tEnd – dur);
n += 9973;
seedRandom(n, true);
startVal = random(minVal, maxVal);
linear(t, 0, dur, startVal, startVal + dur);Dan
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Hi Dan, I too am trying to get random jump cuts at irregular intervals, but this expression, and the one on MotionScript.com don’t seem to produce true jump cuts, since footage with jump cuts would only cut forward in time. These expressions make the footage go forward and back and anywhere between the inPoint and outPoint. I’m wondering if there’s an easy solution to this?
What I thought would work, was to change the minVal and maxVal. So I tried this:
maxCutLength = 1 //Maximum amount that the footage can jump forward
minVal = time;
maxVal = time + maxCutLength;While this does a better job of making the footage move more linearly in time, it still jumps back in time, as well as forward in time.
-Thanks
After Effects templates – lens flares, light leaks, old film effects, digital glitches, VHS glitches, and more: https://CreationEffects.com
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Maybe something like this:
minCut = .5;
maxCut = 1;
minDur = 0.3;
maxDur = 0.7;tStart = tEnd = 0;
startVal = endVal = 0;
dur = cut = 0;
seedRandom(index, true);
while (time >= tEnd){
dur = random(minDur, maxDur);
cut = random(minCut, maxCut);
tStart = tEnd;
startVal = endVal;
tEnd += dur;
endVal += dur + cut;
}
linear(time, tStart, tEnd, startVal, startVal + dur);Dan
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Works perfectly. Thanks so much for your time, Dan.
After Effects templates – lens flares, light leaks, old film effects, digital glitches, VHS glitches, and more: https://CreationEffects.com
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