Quote: "How do you think 99% of special effects are added? If you want depth and interactivity, you do it in a 3D modelling and animation package."
No, you do it with a movie editors, there are a lot of softwares for that
the most professional ones are AffterEffects, Premiere, FinalCut Pro and some others
but here are a few cheaper solusion
EffectsLab - 50-64 Euro - Special Effect editor, it is a good editor but they are still
building it, in the near futher there will be more effects, I plan to buy it soon.
Chromanator - 50 Euro - movie editor for greenscreen, lightning and stuff check the tutorial section.
VideoMach - $30 - very simple movie editor.