Originally Posted by
nkupianist
If anything, to my eye, your weight looks like it's going forward in the hole. I don't see any evidence of your weight being on your heels, even if it feels that way. At the very bottom, I see your heels pick up ever slightly on some reps.
Your knees might be annoyed because in the hole, they get a bit slammed forward. I think that because your hams are more slacked/less stretched high bar, you're bouncing off your calves rather than off tight hams. This shifts all your weight (along with your knees) forward in the bottom. This could bug your knees.
As far as depth, a direct side video would really show it, but to my eye, you're going more past parallel than needed - look at the rogue box behind you - you can consider it "parallel". Compare your thigh angle to that. As far as what is ok depth, your hip crease going below your knee is the mark, but for all the things a 45 degree angle does show, it doesn't allow as good a depth analysis as side, hip height. If there are any SSC or more experienced forum members who disagree with me here, I welcome the input.
Your depth might get properly cut off just from better bracing. Don't go any deeper than you can get while tight, and get MUCH tighter to start. Try that, and film from side. That might clean the depth and knee issues up for you.