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Frame Flicker Effect: Help!!!
Greetings everyone—I’ve been studying a few music videos to as a learning tool for my editing skills. I saw a couple videos use a frame flicker effect (synced with a rapid high hat drum sequence)…It is used sort of like a transition frame for the incoming static frame@4:00 (https://www.mtv.com/overdrive/?artist=1164800&vid=142876). Does anyone know how this effect is accomplished?
All help, suggestions, feedback is appreciated!!!Gees
“If at first you don’t succeed, brush yourself off and try again”
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3 Replies
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The MTV site won’t allow those of us outside the US to view the clip, so we have no clue as to what effect you refer to.
However, you can sync things to audio events (such as a drumbeat) with Trapcode SoundKeys.
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You could just do it manually by:
1. pull both images into After Effects
3. Place one image on top of the other on the timeline, running the entire duration of your comp
4. Keyframe the opacity of the top layer to be, say, 100% at frame 3, then place a hold keyframe with a value of 0% at frame 4. Then keyframe the opacity back to 100% at frame 7. You could duplicate this set of keyframes along the entire timeline and you would have your flicker effect.
Another option would be to use an expression on the top-most layer to control the flickering.
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you can also convert your audio to keyframes (sound key is a better way to go because it allows you to isolate a frequency range, but audio to keyframes would be a good start).
then link your flicker effect to the audio keyframes. without being able to see the effect, its hard to theorize the method used… but you could link the audio to the opacity of an adjustment layer with a color adjustment (like levels, curves, etc) on it, or possible to the intesity property of the glow effect, or something like that.
to link a layer or effect property to the audio keyframes, add and expression to the property, then drag the expression pickwhip to the audio key frames. you can further adjust the expression by adding a multiplier or other mathmatical adjustment to the expression… say, x is the audio keyframe value, and the maximum value in your audio is 10. say you wanted to only have values above 8 effect your flicker, your expression could be x – 8. if a value of 2 isn’t high enough (say you linked it to opacity, 2% isn’t too opaque), so add a mulitplier, and you expression might look like this: (x – 8) * 100. now anything below 8 will return 0 and anything between 8 and x (10 max, in this example) will get multiplied by 100.
Kevin Camp
Designer – KCPQ, KMYQ & KRCW
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