In case anybody wants it, here's a version what works with MTA (I modified it for a bit):
** Download it from the "Download" section. **
So, it works like this:
1. Run it and configure it (I suggest disabling removing the "camhack enable/disable/zoom" and so on keys, because in my honest opinion those suck.)
2. Keep running it and go ingame.
The most useful feature has to be the free look camera, which can give an interesting aspect to your movies. Original credits go to Racer_S, the creator of the camhack.