Re: video shakes to the beat?

MANUALLY ---if it has a very dominant base beat, I'd say use the convert audio to keyframes function, and you may be able to get it to work properly.
Use a wiggle expression (on position/scale whichever you want) with the amplitude attached to a slider that is linked to the value of the audio keyframe --- or straight to the keyframe value.
I'd leave the frequency a single number --- but you can probably play around and link it to the same value and add/subtract/divide/multiply simple numbers until it works properly.

Soundkeys will make this a piece of cake with custom output numbers ---