Both deadlift setup is not tight enough. A lot of unnecessary movement and not focusing on doing the actual deadlift

Long pants guy's form seems legit. Second vid, ask him to stop shrugging back shoulders at the top. No need for such exaggerated movement. And no need for such a slow negative otw down.

which gym brah

for long pants guy, you lock your knee joint too early, your knee joint and your hip joint should be locked at the same time, if you lock your knee too early, its almost as if you are doing stiff leg deadlift.

take an a4 paper and fold it equally 3 parts, it shall looks like Z shape if look from the side, imagine the top part is your upper body, middle part is your thigh, lower part is your calve.  now hold it vertically, pinch the top part and bottom part and pull it upwards, you will realize both the folded part( the joints) both locked at the same time. thats how your deadlift joint lock should be.you can see short pants guy for referrence his lock out time for both joint is correct

short pants guy dont hyper extend your lower back (thrusting too much) or you will develop lower back pain. just keep it straight.

no, you move both your upper and lower joint together, and lock them together at the same time. hove you done the a4 paper demo that i have told you?

so you do realize when you pull it up, all the 3 parts of the paper move together, and lock together, right?

Bar too far from your shin. Place the bar over your mid foot.

Your hips raise up first because your hip starting position too low. The starting position don't have problem but just not perfect for your body. Check your video, your hip starting position should be the same as your bar start to leave the floor.

Don't hyper extend on top.

Your form is really stable and just need few minor adjustment. If you worry, post again next time using heavier weight.

Just my 2 cents. =)

Sifus, care to do a form check for my deadlift? I wanna add more weight but want to make sure my form is correct. Many thanks. 

I am 60kg and this is 80kg include bar

philip42 You still have the problem from the previous video as mentioned by bro ah_suknat
Just to add on, bar need to be closer to the shin.

yeah i think you leg drive too much, once the bar pass over your upper knee, squeeze your ass and push it forward.