Topic: Long Animation/Gifs or Videos?

this should be overall of images and gifs, if you could do videos of those gifs, what type is the correct length of gifs that should be considered to convert to video?

not adding sound, nor modifying a thing, just a video instead of gif, of course the gif versions would be loops of parts of the video, if not the video a mash up of the gifs, that are relevant of the "parent" / "child" hierarchy.

aside of that, i am doing longer than 20 seconds gifs, should i made a video instead?
or just posting it as it is, a gif?

what i had seen here is that videos are often glitched or non working, so i would end just posting gifs, but my question is,
what would be the best thing to do, for longer than 20 seconds gifs?

[if confused, yes, i will personally do videos if there is any sound i could add, i dont own a mic nor a suitable place to practice voice acts ,so i cant do it myself, at least by now]

Updated