Well, leg lengthening filter, but yeah it's fairly common (more so for beauty content). The video I commented on used the most basic filter though, which is what you'll see most often when the filter is noticeable. Less noticeable/high quality filters are likely to be done in other software programs (for retouching) or with paid filters... but I don't really post that sort of content on here so I guess it doesn't get brought up.
I've added an example below of the leg filter being put on below. If you go back to the interview video, you can see how the proportions from the hips down are almost weirdly long because it's just a basic lengthening/video stretch.
For those of you wondering where my normal fic posts have gone, I have big news, which is that I am currently spending the month completing the sequel to my novel, Reflector!
I can’t wait for you all to be able to read my next story, but here’s the cover, created by the absolutely flawless Kat.
Title: Dark Star
Synopsis: In the aftermath of the Heights exclusion, the city of Colvus is wracked by civil unrest against the complacent Jiani priesthood. With Vess rendered impotent without her proxy and their city plagued by protests, a shadowed hand pushes for a dark goal. Through the chaos, Polly and Jemma confront their shared grief, a broken paladin grapples with a faltering faith, while Vess and Wally must find their unity again to bring the sorceress’ power to bear, and save as many as they can.