Here are some details about how I made this timelapse video with a GoPro and a Mac. It wasn't as straight-forward as I thought it would be, so I wanted to share what I learned.
As you can see from the video, the subject was me building a wooden mechanical 3D puzzle which took me nearly 18 hours to build. I took a photo once every 5 seconds which yeilded more than 12.7k photos.
Here's what I used to make a timelapse video.