Your keychain password lets you automatically authenticate applications and services stored in Keychain Access. When the account is created the keychain password is set to match the login password for the account.
Youtube-dl is a python based command line video downloader that just works. Despite its name would suggest, youtube-dl downloads more than just youtube videos, it currently supports more than 800 online video and audio sites. If you are using a desktop app or web app to download videos now, chances are it’s using youtube-dl in the back-end. You are better off using youtube-dl instead considering you get so much more power and options with it. Here are some simple tips to get you started.
Install from the source
There are multiple options to get started with installing youtube-dl, I personally recommend installing from the source simply because how frequently its database gets updated and most OS package managers are a bit late when keeping up with the updates. The best thing about youtube-dl is that it runs on all major OS as long as you have python installed.
Windows users can download latest exe file. For Linux, MacOS users:
sudo curl -L https://yt-dl.org/latest/youtube-dl -o /usr/local/bin/youtube-dl sudo chmod a+rx /usr/local/bin/youtube-dl
Download using cURL to the proper application directory.
Apply proper access permission to run youtube-dl.
Always update to the latest version
Online video players are updated frequently which can often break how youtube-dl download video files from your favorite site. So, just like browser video downloading extensions, it’s a good idea to keep it up-to-date. You could make a cronjob, but I prefer to do it manually.
Updating youtube-dl is as simple as typing:
Upgrading from previous versions of OS X
Upgrading from OS X Snow Leopard or Lion
If you’re running Snow Leopard (10.6.8) or Lion (10.7) and your Mac supports macOS High Sierra, you will need to upgrade to El Capitan first. Click here for instructions: https://support.apple.com/en-us/HT206886
Upgrading from OS X Leopard
If you’re running Leopard and would like to upgrade to macOS High Sierra, first you’ll need to upgrade to OS X Snow Leopard. You can purchase OS X Snow Leopard from the Apple Online Store.