Anterior knee pain with form check

[williamlexcrawford]

I really haven't had much in the way of knee pain until the past few months. Right now it's not stopping me from training, but I would rate it as rather unpleasant. It's only in my left knee, really haven't had any trouble with the right.

I recently widened up my stance a few inches because for whatever reason I thought felt I could activate my glutes a little better with the wider stance. I'm only 5'11" but have very long legs and a short torso, so I thought that widening it up a bit might help. I measured the distance from the center of my heal to the other and it was 18 inches originally and 22 inches after I widened up some weeks ago. It did seem to help but in thinking about it I might have just created more tension on my hips which is making my squats a little high now, which could be causing my knee pain (?).

Anyway, I'm just wondering if someone gave them a look at could see anything that would be overtly causing me anterior knee pain. Any help would be appreciated even if you don't see something that would be causing the pain, but that I'm doing wrong.

Here is a video from May, before I changed anything:
http://youtu.be/hU1j0_YsRAE

And these are from more recently after I widened up my stance:
Side view
http://youtu.be/w-2UDzZpNV4
http://youtu.be/7Thhc7V0_TU
Rear quarter
I'd have to say these look pretty shitty, you can see my feet shift on the first rep
http://youtu.be/PgBY7NwA-mI

[Gunnhild Bruno]

I recently widened up my stance a few inches because for whatever reason I thought felt I could activate my glutes a little better with the wider stance. I'm only 5'11" but have very long legs and a short torso, so I thought that widening it up a bit might help. I measured the distance from the center of my heal to the other and it was 18 inches originally and 22 inches after I widened up some weeks ago. It did seem to help but in thinking about it I might have just created more tension on my hips which is making my squats a little high now, which could be causing my knee pain (?).

Yeah, widening your stance fucked everything up. Where did you get the idea that you needed to activate your glutes more? Also, who told you that you have a short torso and very long legs?