I tested it on my server and the same problem.
The script is full of errors & whoever nulled it has left a lot of extra files all over the place.
I would source another copy, i dont think this ever worked correctly.
I have 4 different copys of this script.
Nulled by different people,
Got them from different places.
Still they dont work.
Something about the vid codecs,dont remember right now.
its 2 am so im off to work,but when i get back i will post them here.