This video's recorded on real hardware, a Japanese PS2 slim. But World Stadium 4 works perfectly on DuckStation or the Beetle PSX core of Retroarch. I used emulators for when I wanted save states, like finishing the game so I could record the credits.
If you press the Start button, then Reset from the menu, then choose the option on the left with the Circle button, that should take you back to the main menu.
