So i know when you start the speedrun thats when the world has generated but when does it end is it when i kill the ender dragon, when the ender dragon dying animation finishes or when i go through the portal that brings the credits

From a bunch of Minecraft speedruns I’ve seen, I’m pretty sure the time starts when you first move, and ends when you go through the portal at the end after killing the ender dragon.

[quote=[MCBE Speedrunning Rulebook]Timing ends the frame the screen begins to fade after exiting the end.[/quote] Or just read the rules https://github.com/MCBE-Speedrunning/Speedrunning-Rulebook