Super Mario Bros. 8-1 flagpole glitch

Check out my 2019 speedrunning goals / schedule:
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This is the full level from a save state using the sockfolder practice rom. I learned what to do from stuckinaplate's video description and tried several variations. What I found to be most consistent for me is a very fast "wiggle" to alter the subpixels, and a 1 frame jump at the end of the stairs. The fast accel at the beginning is probably the most difficult thing in this video, but I was starting to get some consistency by the time this happened.

From what I can tell this does save the frame rule. I frame counted it and played it side-by-side with my pb for comparison. It is nearly 20 frames by count and very obviously a frame rule faster when beside my pb.

stuckinaplate's video with more details:

[kriller]

Really incredible. Cant wait to watch more of you streams and hope your thumb heals soon!! This is seriously insane tho GG

[gdash]

well the fact that more than person can do this basically proves that any% will be lowered pretty far
down

[odysseyguy]

Your poor finger, hope it gets better! :)

[hitzcritz]

Rip your fingers, hope they get better

[ThaAwesome]

Is this glitched? In the thumbnail it shows 30:15 is the video length but it’s 0:57

[EGarrett]

It still bothers me that wes never made a tutorial.

[raydarable]

So saving another frame rule is possible?

[ayanmohamoud]

Could this video be a hint to an upcoming new world record?

[Thchsnns]

@somewes Doesn't this make you only the third human being to have saved this framerule?

[platurt]

Shouldn't the savestate start at the end of 4-2 so ppl get the timing for the start of 8-1 down?

[sc]

Is this real? Why is stage's name 8-0?