How is this effect called or any tutorial for Adobe After Effects?

[Oidipoussmith]

I want to add a effect to my video, the one that you see many times in videos or movies. When the person is in the middle of a crowd and he is saying something in a normal tempo, normally, while people actually go really faster by, faster than normal...

How is this effect done? Tutorial would be great

[Naz]

Welcome to SGL, I think you should pose this question on a photography / video forum as it isn't anything that is relevent to astronomy so the knowledge may not be here.

[dafman]

Welcome to SGL You could try this forum Talk Photography™ hope this helps