I can not give you specifics on how to install FFMPEG correctly as I am not a server tech. I have shown FFMPEG works althougth I know the binary I found only does like wmv and avi video's as it states. The documentation on FFMPEG is very sketchy as after many years its still beta software not even having a final release yet.
The command we use is this
Code:
Content visible to verified customers only.
We include this as an option if you have it on the server but we make no guarantees on what video types your server's install supports.