A.P you win the award for most unique setting for a squat check video.
I see lumbar over extension and an attempt to keep the spine vertical (perhaps these are related problems). Granted, a high bar squat produces a more upright torso than low bar, but these aren't front squats. A significant weight would exploit that form fault - the metal rod you're holding will not.
I suspect that your knees are pinching in, but I can't tell from this angle.
These are more akin to what a standing leg press would look like (trying to be helpful, not mean ) so you definitely need some work. I'd say that you would not be able to squat a significant weight with these mechanics, because you'd be off balance.
If you want to practice without weight, I'd advise doing a body weight squat with your arms out in front. Then add the challenge of bar position later.