This makes video designer or kompouzer. Anyone who deals with compositing 😁
These people specialize in video editing or as it is called, post-production .
The most popular "weapon" kompouzitinga, at the moment, it is the Adobe of After Effects .
I advise to visit the site of Andrew Kramer, popular in the Internet, the VFX artist of :
It's full of his cool, intuitive lessons. In the POI including a vast collection of completely free😉