Well, this is Dead Hard:

Here is something you may not know about DH, maybe you play on console who knows.

On pc all you need to do is press shift and E to dead hard.

You may need to move a little bit just like how Jane did before the dead hard but that is how it works.

Yeah, if the survivor dead hards at you, you will be able to body block, dead hard makes their collision disappear for a few seconds, it doesn't mean that yours disappear.

So basically when Scott was walking towards the hook Jane dead hard to Scott's blight, he bodyblocked Jane that is why she didn't moved.

Edit: sorry, I meant hitbox instead of collision.

Yup, there are a few frames where you are invincible during the animation. You can also activate it while standing still as long as you're holding the run button.

I've done it multiple times where I had gen almost done, get hit, do a little more, dead hard into the gen so their hit phases through me and then finish it; I've done it on doors as well.

You see streamers and such do it now and then and it looks pretty funny when it happens. You have to have decent timing with it though because too early or too late and you get hit. There also isn't a lot of uses where it actually matters like your example. Most of the time you just miss a hit and you lose like 2 seconds because you have them blocked anyway. The above example is about the only good use of that invincibility.

It looks like she ran for a second and then used Dead Hard.

On Xbox it's just the "x" button, but of course you need to pray hard to the ded server dieties with each use.

There's an old trick cocky PC survivors used to do where they'd stop dead in the middle of a chase to bait out a lunge then would Dead Hard from standing still to avoid the hit. It made them look like survivor Gods if they pulled it off, but after seeing it once I knew to wait out the Dead Hard and down them immediately afterwards. When it doesn't work it makes them look like overly-cocky goofs who just got stuffed.

Part of the reason I use DH as a survivor and don't mind it as a killer main is that it's the only exhaustion perk that takes any amount of skill to use. Even if you're "Dead Harding for distance" you need to have correct positioning and timing to pull it off. Anyone who says you just need to press E has clearly never actually used the perk.