Which effecys

[Roei Tzoref]

I assume you mean this video?
https://www.youtube.com/watch?v=_-QxSh19nDI

you need to be specific: show exactly what effect or effects you want to replicate by specifying the right point in time.

Roei Tzoref
After Effects Artist & Instructor
♫ Ae Blues Tutorials

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[Jonachan Chainy]

with the clouds, its harder than just adding effects.
you need to add a mask with the pen tool on a copy of a video you want it on.
then on the timeline click the drop-down and right click the mask. (if nothing shows up make sure you are in the right composition panel and that your mask is closed.)
once you right click the mask click track mask
a panel will show up on the right.
click the forward triangle
when your mask it tracked both ways, slap some clouds between the masked video and the original video.

the layers should go like this

piratedsong(2).mp4
cloud timelapse.mp4
piratedsong.mp4

or whatever you call them

then just click them all and pre compose them all.
now drag the “curves” effect onto the pre composition and adjust the colors to your hearts content.

good luck
-jon