[wmcbrine]

You need the full path on the ffmpeg entry, including the .exe

The OP is using a Mac -- they don't have ".exe" on their executables. I won't go further into that right now (it gets complicated), but looking at ffmpeg.org/download.html, it appears to be just the source code. So, yeah... that's wrong. You'd need to either build it (assuming Xcode is installed), or download a pre-built version for OS X.

 

[wmcbrine]

The issue was the extension of the video I was trying to upload. mp4 didn't work, m4v does.

That's not true in the general case. But I'd have to see the logs to know what happened.