YT VJ — Octave, Warp & Visual FX

Turn your browser into a real-time VJ/DJ rig, and add live visual and audio effects to any YouTube video. No local software to download, no exporting, and no render queue. Just a YouTube link and your creativity. Note: This extension is for standard YouTube videos, not shorts.
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For DJs, VJs, video artists, and anyone who performs or improvises visuals on the fly, or just wants to have fun.

29+ effects, fully mixable and customizable — layer them freely.
Visual FX
• Color grading — five live curves (Red, Green, Blue, White, Black) plus distortion and grain, nudged from the keyboard in real time
• Trail — video feedback/reverb; bright content leaves ghost trails that decay at whatever rate you set
• Warp — cursor-driven pixel smear that follows your mouse across the frame• Tessellation — fold the screen at sharp angles. *Note: This feature works exclusive of other features like grain, visual distortion and color grade. When this feature is selected, those will not appear.
• Topography — organic ripples and shading *Note: This feature works exclusive of other features like grain, visual distortion and color grade. When this feature is selected, those will not appear.
• Shape mosaic — pixellate using various shapes and scales
• Point clouds — beat-reactive 3D clouds that move with the music
• Freeze-frame metal photos— a screenshot of the current screen on a moving card with a liquid-metal finish
• Flood transitions — an animated wipe of shapes sweeps across the frame for clean scene changes

Audio FX
• Auto Filter, Auto Panner, Auto Wah, Phaser, Tremolo, Vibrato
• Pitch Shift — shift pitch independently of playback speed
• Frequency Shifter — frequency shifting = weirdo metallic, alien tones
• Beat Repeat — capture and stutter-loop the last slice of audio
• Distortion — waveshaping and harmonic drive = crunch and grit
• Chorus — buttery texture and "thick" vocals
• Feedback Delay, Ping Pong Delay, Reverb = echo, stereo-bouncing delay, and ambient space for all the space cadets.
• Stereo Widener — pulls the stereo band wider, creating a spacious "3D audio" feel

How you control it
• A translucent on-page overlay that floats over the video without blocking YouTube's own UI
• A pop-out, resizable controller window if you want your rack on a second screen
• A full keyboard shortcut & hotkey menu
• Your setup stays consistent. Controller settings autosave and restore automatically, even through video changes.

MIDI (optional)
Open more flow and expressiveness by plugging in any class-compliant MIDI controller to your laptop. Mix parameters, adjust timing, intensity, and find your pocket.