After gameplay I retimed this run using https://somewes.com/frame-count/ with a console FPS of 60.098813897441 which is the SNES native framerate according to http://tasvideos.org/PlatformFramerates.html and raw video framerate of 30 FPS for a total of 24612 frames or a Console Time of 13:40.399. First Frame set the frame before the Koopa disappears and End Frame set on the frame Bowser's hammers are invisible after touching the axe on 8-4.
I use Super NES Control Deck Model No. SNS-101 with "Super Mario Collection" cartridge model SHVC-4M and GV-USB2 Capture Card. PB achieved during "J Timing" attempt, console check at the end of that run.
Following investigations regarding the accuracy and integrity of FCEUX, the SMB1/2J moderation team has decided that FCEUX will not be permitted for future submissions, effective September 17th, 2023. The accuracy of FCEUX has come into question following 108Pi's discovery that the current SMB1 Warp