A chrome extension for playing youtube videos with an external application. In this case, mpv with a custom x11-name (for i3 workspace assignment). This extension has only been tested on my specific setup, your mileage may vary.
In order for this extension to work you must first install the native messaging host from the host directory.
To install the host:
Run install_host.sh script in the host directory:
host/install_host.sh
By default the host is installed only for the user who runs the script, but if you run it with admin privileges (i.e. 'sudo host/install_host.sh'), then the host will be installed for all users.
You can later use host/uninstall_host.sh to uninstall the host.
You can then load the extension in chrome by visiting chrome://extensions, make sure "Developer mode" is selected, then "Load unpacked extension".