"Stacklapse"?! (What is it?!)

First, you might want to look at this webpage, as it might give you an idea about what I'm about to talk about: https://petapixel.com/2012/11/10/stacked-photos-in-which-clouds-look-like-brush-strokes-across-the-sky/ First of all, before we begin let’s review what a time lapse is. A time lapse is a video in which a series of photos taken at time intervals is compiled into a video and played back. It can also simply be a video which is sped up. Then there’s what’s called a hyperlapse, which is an accelerating time lapse (I honestly don’t know what they’d call a decelerating time lapse). Additionally, you could also create a video in which only a part of the scene is sped up, while the other is either kept at a normal pace or slowed down; for example, think about a slow motion video of a splash of water, while in the background the stars are moving. One such compelling example could be found in an Anthony Bourdain commercial. Using photos taken using time intervals, once can also create a collage (photo grid), diptych, etc. which is something that’s on my bucket list.Anyways, let’s move on. What the freak is a “Stacklapse” then? If you’ve read the article in the link given above, you are already aware what can be created using continuous photos, which can be combined into a single exposure. But Stacklapse is a term made up by myself, to describe a time lapse which is created when all previous frames are being added up. In other words, it’s actually really a time lapse, except that all previous frames are visible in any given frame. I think that the idea might have come from my exploration of the long exposure app for iOS, which, instead of creating a true long exposure, creates a simulated long exposure using individual frames via video mode.Hurray! The live view that an iOS device provides during the making of such an exposure! And I just figured that out!