Skip to main content
Participant
January 11, 2017
Answered

Convert Audio to Keyframes Not Accurate

  • January 11, 2017
  • 1 reply
  • 2766 views

Hello, I'm a music producer and I'm trying to sync parts of my visualizer to parts my song, specifically the drums. So I exported the kick and snare track and converted that to keyframes, expecting the keyframes to spike at the transients. However, in the space between the drums the keyframes hover around 30% even though there is complete silence at that point in the audio file. The transients also only peak at around 50%, even though they reach 0dbfs in the audio file. Why is this and is there a way to fix it?

-GlitchMaster

This topic has been closed for replies.
Correct answer GlitchMaster

Wait! I figured it out, converting the audio to keyframes converted all the audio in the composition into keyframes, not just the trigger. All I had to do was mute the song then convert the trigger!

-GlitchMaster

1 reply

Mylenium
Legend
January 11, 2017

You have a wrong understanding how this works. This simply converts the overall amplitude within the frequency range, not specific "hits" or whatever. Unless your hits are exactly one sample long at a maximum amplitude of 100% and also happen to be exactly at the correct time position, they will never max out. The rest doesn't really matter. One would simply remap/ multiply or whatever the values in the expression that actually uses them. This is a common workflow.

Mylenium

Participant
January 11, 2017

Yeah, I just have the kick and snare in an audio file, they are the "hits" that I want to transfer into keyframes, they do peak at 100% (0dbfs) and have a fast decay (not 1 sample though). Here's what the audio clip looks like in FL Studio:

https://gyazo.com/c4b22cb7f64ac2344bcef0f935892cf9

As you can see, there are the hits at the exact right times that I need them and silence in between. However, in After Effects this silence gets turned into a percentage value from around 10-30%, with the hits not peaking, even though they are as loud as they can possibly be in a 24-bit audio file.

-GlitchMaster