When I first started using Bento4 it ran only on Python 2.7x and earlier. For this reason, the installation instructions in my book Learn to Produce Videos with FFmpeg in 30 Minutes or Less describe how to install Python version 2.7. At some point, however, Bento upgraded to Python 3.x, obsoleting those instructions.
I’ve upgraded my course, Produce Videos With FFmpeg:The Beginner’s Course for this change, and provide the video below for those who have purchased my book.
Thanks to Chuck McCollim, who notified me of the problem and coached me through the installation, and Rogerio Antonio de Souza for reminding me to get this done.
Here’s the video.