How to download video in youtube on mac book ?
Use Internet Download Manager. It automatically detects videos on the page. But sorry I didn't know that it is not available for mac.
Download Freemake Video Downloader it's very quick and can watch the videos even if your not connected to the internet. Your welcome!
Use leawo youtube downloader for mac to help you. 1.Download the program from: http://www.leawo.com/youtube-downloader-mac/2. Install the program, run it. 3. Copy and paste the video url in the program to start download. That's all.