hallo

How can i divide the screen in a kdenlive clip diagonal in 4 equal parts for creating hologram videos ? I didn't find an effect for doing this.

thanks for tipps

I don't think there's an effect for that, but you could probably create it manually by using mask shapes - you will need at least 7 video tracks, probably 8: your 4 video tracks + masks of each segment. (I haven't done this myself in Kdenlive and I don't know if this tutorial is still current, but the general workflow seems sound)
Whatever solution you find, you'll need to get familiar with the timeline and the use of transitions - here's an in-depth explanation.

This sort of question is a bit of FAQ. So I have just created an answer to it in the manual.

https://userbase.kde.org/Kdenlive/Manua ... een_Effect

Well at least I think it is an answer to what the OP is asking. I do not know what the OP means by "hologram video" because Kdenlive certainly can not create holograms.

But the linked tutorial shows how to have 4 screens playing in the one screen using kdenlive.