vivid-glitch

Creative audio and visual glitch effects for Vivid.

Preview

Audio Operators

Operator	Description
Stutter	Beat-synced slice repeater with configurable volume envelopes (decay, build, flat, triangle)
TapeStop	Tape deck slowdown/speedup simulation with cubic deceleration
BeatRepeat	Beat-synced slice repeater with per-repeat volume decay
Reverse	Beat-synced reverse playback with crossfade
Scratch	DJ-style varispeed scratch with direction control (back-forth, forward, backward, random)
Stretch	Granular time-stretch (pitch preserved) with Hann-windowed grains
FreqShift	Bode frequency shifter via 31-tap FIR Hilbert transform with LFO modulation
Glitch	Meta-effect — random audio effect selector combining all above effects with per-effect probability

Visual Operators

Operator	Description
JPEG Glitch	Simulated DCT block corruption with quantization banding and per-block channel offset
Pixel Sort	Luminance-based displacement approximating pixel sorting along rows/columns/diagonals
Block Displacement	Grid-based random block offset and duplication with time-varying patterns
Scan Distort	Per-scanline horizontal displacement simulating analog signal corruption (noise, sine, square, sawtooth)
Channel Shift	Independent R/G/B channel offsets with clamp/repeat/mirror wrapping and sine animation
VHS	Analog tape playback artifacts — tracking errors, color bleed, head switching, wobble, tape noise
Static Glitch	TV static/snow with flickering, interference patterns, scanlines, and vertical hold loss
Datamosh	Frame blending and motion displacement simulating I-frame deletion with persistent frame buffer
Visual Glitch	Meta-effect — random visual effect selector triggered by beat phase with per-effect probability

Install

vivid packages install https://github.com/vivid-project/vivid-glitch

Or install from the in-app package browser: Browse Packages > vivid-glitch > Install.

Usage

Audio glitch operators have a phase input for beat sync and a mix control for dry/wet blending.

{
  "nodes": {
    "clock": { "type": "Clock", "params": { "bpm": 140.0 } },
    "synth": { "type": "Oscillator", "params": { "freq": 440.0 } },
    "stutter": { "type": "Stutter", "params": { "chance": 0.5, "size": 0.1, "count": 8, "mix": 1.0 } },
    "out": { "type": "audio_out" }
  },
  "connections": [
    { "from": "clock/beat_phase", "to": "stutter/phase" },
    { "from": "synth/output", "to": "stutter/input" },
    { "from": "stutter/output", "to": "out/input" }
  ]
}

Visual glitch operators take a GPU texture input and output. Connect them inline in your video chain:

{
  "nodes": {
    "cam": { "type": "Camera" },
    "vhs": { "type": "VHS", "params": { "tracking": 0.5, "color_bleed": 0.6, "noise": 0.3 } },
    "out": { "type": "gpu_out" }
  },
  "connections": [
    { "from": "cam/texture", "to": "vhs/input" },
    { "from": "vhs/texture", "to": "out/input" }
  ]
}

The Visual Glitch meta-operator randomly triggers visual effects on beat, mirroring the audio Glitch operator:

{
  "nodes": {
    "clock": { "type": "Clock", "params": { "bpm": 128.0 } },
    "cam": { "type": "Camera" },
    "vglitch": { "type": "Visual Glitch", "params": { "intensity": 0.8, "duration": 0.15 } },
    "out": { "type": "gpu_out" }
  },
  "connections": [
    { "from": "clock/beat_phase", "to": "vglitch/phase" },
    { "from": "cam/texture", "to": "vglitch/input" },
    { "from": "vglitch/texture", "to": "out/input" }
  ]
}

Status

All 17 operators (8 audio + 9 GPU visual) compile and install successfully.

Verified rendering:

• Static Glitch, Channel Shift, VHS, JPEG Glitch

Compiled but not yet visually verified:

• Pixel Sort, Block Displacement, Scan Distort, Datamosh, Visual Glitch

Known Issues

• Package compiler fix required: Vivid's package_compiler.cpp doesn't link -lwgpu_native for GPU package operators, causing link failures. We patched it locally (added -L/-lwgpu_native flags). This fix needs to land upstream in Vivid before GPU package operators work out of the box.
• gpu_operators manifest key: GPU operators must be listed under "gpu_operators" (not "operators") in vivid-package.json so the package compiler passes the correct flags. This is a non-obvious requirement.
• Addon system refactor pending: The package/addon system is being refactored, which may change manifest format and compilation.

License

MIT