Wow.
Ok. We're going to fix this. You're my new project.
First of all, you're getting plenty deep. You might even be an inch too deep. So flexibility or mobility or whatever we're calling it these days isn't your problem (it never is).
Your problem - and I mean this affectionately, my friend - is that you don't know how to squat. You have internalized SS like I've internalized being the Queen of England.
How much weight is on the bar? Whatever it is, drop it by 30%. We want you to learn how to squat before adding enough wait to actually challenge you.
Here is our plan:
1. Widen your stance 2-3". This will tighten everything up. You say you've adopted a 'wide stance.' No, you haven't. I can't tell this for sure, because I can't see you from behind (which is fine, this is a good angle, but Internet coaching is inherently limited), but I'm fairly confident. If I'm wrong we'll narrow it later.
2. When you do this, make sure you keep shoving your knees out hard. SHOVE. Like you're stealing their lunch money.
3. Stand up straight at the top. All the way up. Don't bend your knees like you're playing shortstop for the Giants. You're not Brandon Crawford.
4. LOOK THE FUCK DOWN (channeling Steve Hill here). At a spot a few feet in front of you (i.e. not at your toes). You look down all the way until you ... actually start to squat. That doesn't count.
5. Your back actually isn't *that* bad. Cut your depth off just below parallel and that will help (as will some things I'll mention below). Your lower back doesn't really round till you get (too) deep.
6. Fix your grip. Your wrists shouldn't be bent. Proper bar placement.
7. For all that is good and holy in the world, stop looking around when you have a heavy (for you) bar on your back. Really. Just stop.
Ok, that's the easy stuff. Let's take a breath.
And, we're back.
1. You're putting the bar on your traps and then trying to low-bar squat. MY neck and back hurt looking at this. It rolls up onto your neck (Christ) and it creates an increased moment arm that your back has to contend with. Assuming you're not actively trying to injure yourself - for the insurance money or something - then watch this video and pay attention like you're 13-years-old and this is the first porno you've ever seen.
http://startingstrength.com/index.ph...t_bar_position
2. Once you've got the bar in the right place - and we really can't fix anything else until you have that down - make sure your knees don't move forward once you're about 1/2-1/3 through the descent. This is a problem now, but fixing the bar placement may clear this up. If it doesn't, don't worry, I'll tell you after you post your next vid.
3. The descent is one movement. It's not 'go down some, stop, think about that hot girl you saw on the street, go down a little more, fart, then finally get into the hole.' No no no. At the same time ...
4. Control your descent. Each rep is a special little snowflake to you. No. We want mechanical efficiency. Think of each rep like the poor workers in Apple's 1984 commercial. Exactly the same, every single time.
There's more, but let's start with those. Do the above and post another vid. There's absolutely nothing here that's not fixable, you are not genetically predisposed to suck at squatting, etc.
Good luck.