Video Music Composer

motion + contrast → harmonic MIDI
Audio MIDI Chord Beat
Source
Load an MP4 to begin. Motion and light/dark contrast in the footage drive the notes.
00:00 / 00:00
DarkContrast Scope — brightness histogram · amber = active chord tonesLight
Motion
0%
Brightness
0%
Active Notes
0
Last Note
Output
Reference Sound (Internal)
Load short WAV/MP3 one-shots or loops to stand in for the built-in oscillator when Output is Internal or Both, useful if no MIDI synth is available. Pitch is shifted per note from a middle-C reference. Loaded sounds last for this browser session only.
Scale
Motion & Trigger
5 / 10
1 = large, close motion only · 10 = catches any flicker
14/s
6
0.6 s
Contrast Mapping
40%
Dark pixels pull notes down an octave, light pixels pull them up — how strongly.
Harmony Engine
8 s
65%
18%
How often a motion hotspot blooms into a full chord instead of a single melody note.
Expression
72
60%
MIDI
Configuration
Settings auto-save to this browser. Use Save Config to export a file you can reload later or share.