Question / Help How do I blend in effect into a live stream?

[ZeloTypia]

Hi,

I am very curious about a solution how I can blend effects into a live stream like seen here https://youtu.be/kZZMiq4y6aU?t=7405 around the main bases of Starcraft 2 World Championship Tournament.

Any hints or ideas how this is possible with OBS Studio?

Thanks!