Privrek

Manual

A quick guide to grading your video entirely in the browser — no upload, no account, no install.

1. Import a video

Click Import in the top toolbar, or just drag a video file anywhere onto the window. Supported formats include MP4, MOV and WebM (up to ~300 MB). Your file is read locally and never uploaded.

2. Grade with the panels

All adjustments feed a single 3D LUT, so what you see is exactly what gets exported.

• Basic — brightness, contrast, saturation, hue, sepia and grayscale sliders.
• Curves — Master / R / G / B tone curves; click to add points, drag to shape, double-click to remove.
• Color Wheels — lift / gamma / gain across shadows, midtones and highlights, plus an Offset wheel for整体偏色.
• LUT — apply a built-in preset, or import / export a standard .cube LUT.

3. Watch the scopes

The left column shows live histogram, waveform and vectorscope. They update as you grade, helping you keep skin tones and exposure honest.

4. Export

Open Export in the dock, choose H.264 / H.265 / WebM, set a preset and CRF, then download. Encoding runs on a WebAssembly build of FFmpeg entirely on your device.

Undo & persistence

Use Ctrl/Cmd+Z and Ctrl/Cmd+Y (or the toolbar buttons) to step through your history. Your work is saved locally, so reopening the page restores your last session.