In 2004, Brad Neeley released an alternate audio track to turn the first “Harry Potter” movie into “Wizard People, Dear Reader”, a hilarious retelling in which Harry and friends drink and swear a lot. This off-color Riff-Tracks-esque release enjoyed many years of being passed around on CDs and DVDs, only to die out in the era of streaming as physical media became old-fashioned.

UpFish is a magical, open-source browser extension that uses the WebAudio API to bring “Wizard People” back to life on the streaming site of your choice. Just stream “Harry Potter” and enable the “Wizard People” script in the extension, et voila! You get the original audio, karaoke’d on-the-fly to remove the actors’ voices, and Brad Neeley’s dulcet tones laid over the original score. Watch as Harry, The Wretched Harmony, and Ronnie the F’ing Bear battle sick-ass draculas to rule the school, then finish the evening with a nightcap. A 2-minute chapter to give you a taste: • Wizard People, Dear Reader – VALMART’… But UpFish is more than that! With an open scripting format for audio manipulation, you can publish your own Riff-Tracks-style soundtracks to anything you want. In addition to the custom scripting options, the extension comes with a built-in script for generic karaoke filtering on anything, a script to turn “Harry Potter” into “Wizard People”, and one more to hack the classic Alfred Hitchcock film “Vertigo” into “Fartigo”, in which Jimmy Stewart has gas every time he gets scared… or happy… or bored. Available now! https://upfish.fans/ This talk was presented at Demuxed ’22, a conference for video nerds in San Francisco featuring amazing talks like this one. Demuxed ’22 was made possible by sponsors like our Platinum sponsor Daily (https://daily.co) and organized by people from Mux (https://mux.com). For more information about the conference and community, see https://2022.demuxed.com.