If anyone here is doing a run that's so long it can't be made into a single youtube upload (for example a 15 hour run), you can split the video as long as the same level is shown at the end of 1 video and the start of the next.

For example, if part 1 ends on level 330, it shows level 330 played all the way, then part 2 shows level 330 from start to finish again and then can continue from there.

Im Not Sure I would Survive 15 Hours Of Mario Speedrunning

Does this only apply to 1000 Levels? @Sizzyl

@ely_ anything where you need extensive runtime. I've only personally seen 1 case of this so far.