It is much better than some of the deadlifts into shrugs that you see....the pull to mid-thigh is fine, nice and smooth It was hard to see from the video because the plates were obstructing my view, but it didn't look like you were re-bending your knees, I would recheck it if I were you and watch some vids and do some reading if you think it'll help, because the rebend will allow you to generate so much more pop and explosion.
As far as extension, really exaggerate things, the final pull is meant to be as explosive as possible, you came up on your toes, which is good, I couldn't tell whether or not you could have come up higher, if you feel you could, then work on doing that. The top of the video was cut-off, so I couldn't tell if you were shrugging fully and at true triple extension, I didn't see any glaring issue that would lead me to believe you weren't doing this from the vid, but again, I culdn't say for sure because I couldn't see.
As for height, the bar really only needs to be pulled to belly-button height.
But, overall you seem to have the right idea. Just really exaggerate the last pull and consciously try to be as explosive as possible. And, work on the rebend, not rebending really will hold back your poundages. It will make the final pull much more snappy and explosive too. You seem like the type of lifter who will have a 'moment of truth' when you get the rebend to click and will see big results instantly.