There many companies in software industry which are involved in content development and knowledge management.
These companies are having their own multimedia set up to fulfill their requirement because they develop multimedia rich course content.
they are using softwares like Max, Flash, Adobe premere, Photoshop, After effect, sound forge etc.
I can give name of few such companies
NIIT, Accenture, Genpact, Tata (Intera) etc. to name a few.