• Adobe After Effects

  Any way this could be animating using expressions to link rotation to audio?

  Posted by Daniel Haskett on November 13, 2007 at 4:39 pm

  hi there,

  Basically, if you have a look at this clip https://www.danhaskett.co.uk/ani%20clips/bottles.mov

  Its a quick test I’ve done trying to animate the bottles singing, im rotating the two halfs from the same anchor point, fairly obvious. but i was wondering, is there a way, maybe expression to link the rotation to the audio? i want to try and get the singing by itself, so theres no interference from the bg music.

  then i could convert the audio to keyframes…but are there any tips on how to make it work with the rotation? ive got it so that the bottom half rotation is linked to the top half, but the opposite. so i think id only have to link one half to the audio.

  the reason i want to try this is incase the actual song gets changed, itd be much easier to change it, instead of having to re keyframe.

  oh and one other thing, the bottles are all the same comp duplicated, so they all blink at the same time, i want the blinking a bit more random…is this possible, will i have to make 5 different comps?

  any thoughts would be greatly appreciated,

  cheers

  dan

  Bart Straman replied 18 years, 6 months ago 2 Members · 4 Replies
• 4 Replies

• 

  Bart Straman

  November 13, 2007 at 5:16 pm

  hi

  it’s a thousand years back time sinds i used that option (i’m using the trapcode soundkey’s now). but, you can pickwhip the audiokeyframes value to your rotation value (alt click for expression, then pickwhip)
  then, if nessecary at behind the expression a multiplation, or devide by 10 or whatnever neccecary to make the animation work right.

  and by the way, i can understand why your producer wan’t to change the music, it’s just, hmm, very “bad” and the fact that you’ve must have heart it like 100x to make the animation scares me. the thing i don’t understand is why your produceren did’t come with the right music in the beginning.

  good luck

  Bart
• 

  Daniel Haskett

  November 13, 2007 at 5:33 pm

  hey man

  what can you do with trapcode soundkeys as i have that?

  cheers

  dan
• 

  Bart Straman

  November 13, 2007 at 5:47 pm

  oohw, for detailed discription how to use. see their website or search this forum.
  it does a much better job of analysing the sound. you can set up just wich sound to analyse (for instance the bass, or only the midtones, or only the voice). and then convert them to keyframes.

  it does a better job then that from AE itself, because that ” audio convert to keyframe” makes they keyframes and thus the animation a split second behind the audio what you hear, what you realy don’t wanna have.
  it’s an expansite plugin, but a very good one

  Bart
• 

  Bart Straman

  November 13, 2007 at 6:05 pm

  Oohwyea the part for linking the audio keyframes to your animation rotation stay’s the same. it’s very simple to do so yeah.. 🙂

  other idea; make al the bottles jump to the beat, that’s even cooler, than mayby in 3D space make them bouch in front and to the back, always cool to do. you can also add some elements that bounce to the beat

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