Getting to Know the Command Line - Nice beginner-level article.Introduction to the Mac OS X Command Line - Excellent article with screenshots.Mac OS X Basic Command Line Tutorial - YouTube - Nice video overview.Beginner's guide to the Mac OS X Command Line (Terminal) - Free course from Udemy (includes video).If you're new to the command line, check out these tutorials: On macOS and OS X this means getting familiar with the command line using Apple's Terminal.app. You'll need to be comfortable working from the command line to install and use FFmpeg. Most of what I want to do is combine clips and post them to Facebook, Instagram, and YouTube. I'd also like more control over time-lapse quality and settings. Fortunately, FFmpeg provides all the tools needed to accomplish this, and more. I don't love GoPro's editing software as much and I'm not alone when I say that GoPro Quik doesn't live up to the hype. My wife gave me a GoPro Hero last Christmas and I love it more than I thought I would.

Ffmpeg crop time