I would like to make a YouTube video that has a music visualizer on it, (like in Monstercat videos), but I don't want to have to pay for After Effects. Is there a free way to do it? I know I can get the trial, but I want to be able to use it more than 30 days from now. Also, I'm using OSX, so whatever it is can't be Windows only.
Thanks in advance, -tlf