SloMo/SpeedUp Mathematics for Matching Audio???

agentjonny

Active member
hi guys-
this may have been covered numerous times, but the search engine here isn't helping me very much, so here goes...
let's say i need to shoot a music video. i'd like some of the footage to be slomo and some to be fastmotion. working in a 24 timeline. the mathematical questions are:
how much should i speed up the audio if i shoot in 30P and then slow it down to 80%?
how much should i speed up the audio if i shoot 60i and slow it down to 40%?
how much should i slow down the audio if i want the video sped up at these same increments?
i should note, when i say "slow down the audio" or "speed up the audio", i mean do that in Soundtrack to make a reference mix for someone to play along to, so the footage would have to be slowed down or sped up to match the actual tempo of the song..
someone has to know the math to this..
thanks!
 
Back
Top