I assume that when manual timing, the timer starts when the world first loads, or when the first frame of video showing the world appears.

The question is, on timer stop point, or when the End Poem is triggered. Is this considered to be the first black frame of video after the Ender Dragon death throes, or when the first frame of dirt screen appears? There is a 0.27 second difference between the two.

I have been erring on the side of caution by rounding down to the nearest second at the beginning, and rounding up to the nearest second at the end. I don't think the category I run in (any% glitchless, random seed, 1.9+, vanilla, hardcore, no F3) really requires less than 1 second time resolution, but I would like to be as exact as I can be.

I asked the question in the "Minecraft Speedrunning Questions Thread" and @KilleDragon believes it is the first black frame after the Ender Dragon death throes BUT KilleDragon is not certain.

Is there an official answer?

It's the first black frame after you stop seeing your gameplay (aka when the portal spawns) It doesn't matter for most RSG runs tho because they are mostly a matter of seconds, rather than ms, additionally, you could use Geosquare's in game timer for the precise time that you beat the Ender Dragon

Thanks for the confirmation @AntoLne.

I agree that a time resolution of less than a second is probably pointless for RSG runs. I would like to be as exact as possible though as that demonstrates I have taken as much care in timing as I am possible.

I am not sure how @Geosquare 's IGT works as the source code is not supplied within the zip file. But if it is tick based then the time resolution is 1/20th of a second, right? And If I record at 30 fps, then the time resolution is 1/30th of a second.

Either when the screen goes black or you stop moving, because sometimes lag will cause the end poem to not show up immediately. You can only tell when you stop moving when retiming though, so use the in-game timer or stop your rta timer when the screen turns black