Squat looks fine to me. If you want to try a lower bar position, try it. If it feels better, great. But bar position is one of those things that is completely individual. I know people who squat with the bar as high on their traps as they can get it, and people who squat with the bar as low on their back as their shoulders will allow, and everything in between. You just need to find what feels best and work with that. And from looking at the vid of your squat, your bar position (although fairly high) seems to be working fine for you.
So I wouldn't mess with it, unless you feel that your squat might improve significantly with a lower bar position. And even then, it might not be worth it.... if you are still getting stronger with a higher bar, reap those gains for a while. it will help make your core stronger, and lots of great squatters trained high bar for huge chunks of the year, because it has great carryover to a lower bar squat. Then, if your gainzzz stop, or you decide to compete and the BIGGEST SQUAT is all that matters, maybe it is time to start experimenting/switch to a lower bar. But for know I would just keep doing what you're doing.