Instant video soundboard & loop pedal for Google Meet, Zoom, and WebRTC calls
- Pedal-First Video Looping — Step on your pedal or hold a hotkey to record yourself nodding or listening, then release to loop immediately.
- Instant Soundboard Presets — Save in-meeting loops with custom titles (e.g., "Attentive Nodding", "Sipping Coffee", "Taking Notes") and trigger them on demand with a single click.
- Hardware Camera Power Management — When looping or playing a preset, physical webcam tracks are detached and released (
releaseHardwareCamera()), turning your webcam's green indicator LED OFF. - Seamless Seam Dissolves — Crossfade transitions ensure loops and returning-to-live blend smoothly without harsh visual cuts or freezing frames.
- 100% Private & Local — No external servers, no cloud uploads, zero telemetry. All video encoding (
MediaRecorderWebM) and storage run entirely inside local browserIndexedDB. - Zero Virtual Camera Drivers — Operates natively inside Chrome via browser
canvas.captureStream()andgetUserMediainterception without needing OBS or system-level kernel extensions.
WhatsApp.Video.2026-09-14.at.1.17.28.PM.mp4
Install Veloop with one click from the official Chrome Web Store:
👉 Get Veloop on the Chrome Web Store
- Clone or download this repository:
git clone https://github.com/samirpatil2000/veloop.git cd veloop - Install dependencies and build:
npm install npm run build
- Open Chrome and navigate to
chrome://extensions - Toggle Developer mode on (top-right corner)
- Click Load unpacked and select the
dist/directory inside this repository
Veloop turns your browser into a digital video loop pedal. It intercepts navigator.mediaDevices.getUserMedia at the page level and routes your webcam through an ultra-low-latency 2D canvas compositor:
- Synthetic Video Stream: The meeting site receives a synthetic
MediaStreamoriginating from the compositor canvas. - Pedal Capture & Instant Loop: Holding Right Option / Alt captures uncompressed frames into memory while concurrently recording a compressed WebM stream via hardware-accelerated
MediaRecorder. - Webcam LED Extinction: The moment you enter loop mode, the raw camera hardware tracks are terminated. Your laptop or external webcam indicator light clicks off.
- Preset Soundboard: In the popup, name any active loop to store it permanently in
IndexedDB. Whenever you are in a call, 1-tap any card on your soundboard to replay that clip seamlessly. - Seamless Dissolve to Live: Hitting Right Command or L re-acquires the physical camera in the background and executes an alpha-blended crossfade back to reality.
📖 For complete architecture diagrams, WebRTC interception details, and pipeline specifications, see TECH_DOC.md.
| Shortcut / Pedal | Action | Description |
|---|---|---|
| Right Option / Alt (Hold & Release) | Pedal Down / Up | Hold to record frames, release to immediately start looping |
| Right Command or L | Go Live | Seamlessly dissolves from loop or preset back to live camera feed |
| R | Toggle Record | Toggle start/stop recording without holding |
| 1 – 9 (Popup) | Trigger Preset | Play a saved soundboard preset card |
Physical foot pedals sending standard keyboard keystrokes (like Right Alt or USB pedal switch) work out-of-the-box.
- Popup Soundboard — Accessible via extension icon or keyboard. Features active recording state badges (
LIVE,REC,LOOP,PLAY), 1-tap preset triggers, and one-click preset labeling. - Studio Options Control Center — Customize maximum recording length, minimum tap threshold (to prevent accidental triggers), crossfade dissolve duration, and preview opacity.
Configure recording durations, trigger thresholds, and transition times via Options (chrome-extension://<id>/options.html):
| Setting | Default | Configurable Range | Description |
|---|---|---|---|
| Maximum Loop Duration | 30s |
1s – 120s (2 min) |
Caps how long a loop can be. Auto-loops immediately if the limit is reached. |
| Minimum Recording Threshold | 1.0s |
0.1s – 5.0s |
Discards brief accidental pedal taps below this duration. |
| Crossfade Dissolve Time | 0.5s |
0.0s – 3.0s |
Smooth alpha transition duration when switching between loop and live camera. |
| Playback Frame Rate | 30 FPS |
Fixed | Native frame rate for seamless WebRTC streaming on Google Meet, Zoom, etc. |
| Overlay Opacity | 50% |
0% – 100% |
Ghosting preview opacity for camera alignment. |
- Zero Cloud & Zero Telemetry: Veloop does not transmit any video, audio, or analytics to any remote server.
- Pure Local Storage: All saved presets reside exclusively within your browser's private
IndexedDBdatabase on your device. - Verified Scoped Permissions: Restricts script injection strictly to verified video calling domains (Google Meet, Zoom, Teams, Webex, Discord, Whereby).
MIT License — feel free to contribute, build upon, or fork for your own setup.
Made with ❤️ for video meetings