This package lets you control VLC through the Web Interface's API.

Go to Preferences → HTTP web interface → check "Enable HTTP web interface", and don't forget to set a non-empty password, then restart VLC.

Another choice is simply M-x vlc-start, it will launch VLC for you with this command:

vlc --extraintf http --http-password secret

There are many commands such as M-x vlc-add to add a file to the playlist and play it, here's a list of all commands:

• vlc-add
• vlc-clear
• vlc-delete
• vlc-empty
• vlc-enqueue
• vlc-fullscreen
• vlc-key
• vlc-loop
• vlc-next
• vlc-pause
• vlc-play
• vlc-prev
• vlc-random
• vlc-repeat
• vlc-seek
• vlc-snapshot
• vlc-sort
• vlc-stop
• vlc-volume

• Emacs 25.1
• VLC

• HTTP Requests API README
• API source code httprequests.lua
• Racket package https://docs.racket-lang.org/vlc/ for inspiration, it uses RC interface, not the Web Interface