Open Current YouTube Video in QuickTime Player (or whatever)

youtube-to-quicktime.sh

#!/bin/bash -e

# Instead of watching YouTube videos in your browser, stream them in
# QuickTime Player (or VLC/MPlayer etc.)
#
# youtube-dl supports hundreds of websites, so it will probably work
# for a lot of video sites.
# See https://rg3.github.io/youtube-dl/

# Get URL of current tab in browser
# Google Chrome
webpage_url=$(osascript -e 'tell application "Google Chrome" to return URL of active tab of front window')
# Safari
# webpage_url=$(osascript -e 'tell application "Safari" to return URL of front document')

stream_url=$(/usr/local/bin/youtube-dl -g "${webpage_url}")

# Open the stream URL in QuickTime Player. Change to your preferred application.
open -a "QuickTime Player" "${stream_url}"