I retimed this run using https://somewes.com/frame-count/ with a console FPS of 59.727500569606 (the GBA's native framerate according to http://tasvideos.org/PlatformFramerates.html) and raw video framerate of 30 fps for a console total time of 11:48.099 or 21243 frames. First Frame set on the frame the Start Button is light up on the Input Display and End Frame set on frame the last coin on Phase 23 is collected.

I use VisualBoyAdvance 1.7.2 with "Super Mario World Super Mario Advance 2" ROM.

I time my runs manually with LiveSplit during gameplay.

I use Retroflag USB Gamepad controller and NintendoSpy as Input Display.