and, if this is possible, how can the best players improve their time now ?

It is possible as there is about 10 frames timesave in 8-4 and you can do 1-2 clip to save a frame rule

And also you're going to do the fast 4-2 which is clipping to the block in the start of the level or 2 bump jump which is harder than the clip and also doing the fpg (flagpole glitch) on world 8-3

Someone made a graphic in a forum post of all the things required for the ultimate time, mid 4:55 seems to be the limit.

https://www.speedrun.com/smb1/thread/su6e8 (at bottom of thread).

it's easily humanly possible with with 1-2 clip.

Lol easily. 1-2 clip is pretty dang hard, and the warpzone is also hard. Definitely harder than any of the other tricks excluding PL8-1.

it's easily humanly possible, not meaning it's any easy.

thanks guys

the theoretical human limit i believe is 4m55s6~~ms
i cant remember exactly but its something in the 600ms range

I thought it was 4:55.496.

The current WR can be beaten by approx. 20 frames at the least.

if a human decided to 8-1 fpg and try to framerule save then the human theory tas would be 4:55.11

StuckInAPlate has saved the framerule with FPG in 8-1. It requires a perfect fast accel at the beginning of the level to save 2 frames and then a perfect Mavpole to save the total 21 frames required.

Per Bismuth's awesome video, sum of Human Bests is 4:55.230 (after the 8-1 framerule achieved by StuckInAPlate as mentioned above). Human Theory is 5 frames (0.083) faster than that at 4:55.147.

For under 4:56, someone needs 1 framerule better than somewes, or to run the same framerule but 15 frames faster in 8-4.

(By all accounts, the 1 framerule (likely 1-2 wall clip) is more achievable than the 15 frames faster in 8-4.)

Somewes recently started 8-1 at a 4:55 pace but died to the Parana Plant Pipe-Jump Thingy

He'll get it soon if he grinds a lot, he does 1-2 clip/warp zone rarely but regularly and that's all that was missing.

it happened now (3 months ago lol)

dont necro an old post
pls

that’s like saying 4:55 isn’t possible. Of Course It Is. 4:53 will be done someday

@Sewiferos are you sure about that
There is a solid limit on how fast we can go. We may never be truly sure on what the limit is. 4:54 may be the limit, or it may not be. 4:53 may or may not be possible.