This is by far the best advice I've ever received, I will definitely take this into consideration. Your analysis is very well appreciated.
I agree with everything Hoshin said. IMO he’s right on the money. Especially the hands. The white shirt guy’s hand position than I’m assuming yours. The hand on the stomach is doing nothing for you at all. It’s making throwing a punch with it far slower too. Keep them both up at head height, elbows close (but not too close) to your ribs. The other guy’s was pretty good, but his fists should’ve been out a little further.
In addition to what Hoshin said...
1. The biggest thing I saw was your posture. When you’re (both of you) not engaged, your posture’s dine. Once you throw anything or defend anything, you’re both turning too far, bending over too far, and/or going into a fetal position of sorts. Stay upright!!! Not doing so is a great way to get hit with a clean, easy, and hard shot to the head. Turning away and/or down like that is probably the worst thing you can do; you’re giving up way too many targets. If you can only change one thing, this is probably it.
2. Every time either of you punch or kick, you’re dropping your hands, leaving yourselves wide open. Neither of you counter well enough to exploit this, but a better fighter will easily take advantage of that. They’ll wait until you start your punch, then go in with a fast straight punch to an easy target.
3. Your range is too far away. If you’re going to fight at this range, you’ve got to move in and out with your feet. You’re both reaching way to far to hit each other, resulting in far less power and breaking your posture (just like number 1. here). When you’re reaching that far, quite often your body was turned away from your target, opening up targets, and it seemed like you couldn’t even see what you were hitting.
As Hoshin said, it was better than I thought it would be. You seem like good athletes, which is what helped you all more than MA skill IMO.
Please keep at it. You’ve got potential. A teacher will help you live up to that potential far more. And if you’ve posted it on YouTube, ignore the idiots.