Do you have an aftermarket stereo in your SUV? Amps and sub combo? Your lights flickering means your electrical system doesn't have enough amperage to support the stereo. Just watching the video every time the bass hits the lights flicker. You have a few options to correct this or minimize it.
Add 0 gauge cables aka big 3 and or get a higher amperage alternator. Or you can try adding a capacitor which should help and really reduce the flickering effect. Depending on the stereo setup a 1 farad should do, but going with a bigger one never hurts either.
I agree I used a capacitor in the install when I did my audio system in my car