This is what Simplistic6502 said:

Where do I play the game?

Any time

On the github, click the green "code" button, then "download zip". It should download a zipped folder. Unzip it and there is a file called smb-v5.6.ips. Use this website: https://www.marcrobledo.com/RomPatcher.js/ and under "ROM File" select the SMB1 rom. For "patch file" use the smb-v5.6.ips. Open the rom in an emulator and start the game. One you are in 1-1, press enter. A menu will appear. Use Select to move down to "Input" and A to change it to "On". Press enter to start the game again

You need Simplistic's version of Pellsson. https://github.com/simplistic6502/smb

There is no reason to convert times. A speedrun is how long it takes you to beat the game. If you play on slower hardware, it physically takes you longer to beat the game, so that's your time.

Join the doscord

GreatestRoman, that's what I thought too but they said the tas they use is 4:44, which makes me think they were talking about something other than standard any%.