Adding Video to my Rails Web Application

My Rails web app has been going well. I've been able to figure out some things and get them to work. My current task is adding an upload and convert video function. I want to shoot video then edit the video and upload the video to my web app. I consulted google and was told FFmpeg was the way to go. FFmpeg is a complete, cross-platform solution to record, convert and stream audio and video. I consulted google on how to combine FFmpeg with Rails and was lead to Converting Videos with Rails: Installing FFMPEG. The problem is, this is an example of how to install FFmpeg on Ubuntu. I don't have Ubuntu. I'm on Mac OS X 10.4. I found Installing and Using FFmpeg on Mac OS X and followed the instructions with no success. This is where I'm at and what I'm doing.