If you have Safari Books online(R) subscription, use this extension to save videos to your disk to watch later offline.
Fix for Downloading only till 1 min per video issue, fixed by quanhua92 (thanks :) quanhua92)
You can download videos to watch later for yourself.
This extension works with the new site as well as the techbus site, for more details see:
This extension designed to be used by people who have purchased the Safari Books Online subscription, and the downloaded videos not allowed to be distributed by any mean to others.
Its purpose to be used only to facilitate the process of learning.
Have an issue, Open it here: