UnrealVisualizer

Audio

Recent

Untitled

Edit Preferences

Auto-Save

Enable auto-save

Interval

Preview

Preview quality

Canvas

Show gizmos

Clip to frame

Timeline

Snap playhead to frames

Default row height 26

Playback

Loop by default

Project Settings

Project Name

Resolution

Frame Rate

Timeline Length (seconds — audio overrides)

Keyboard Shortcuts

Playback

Space: Play / Pause
Home / End: Jump to start / end
← →: Step one frame
Shift + ← →: Step one second
Ctrl + ← →: Jump to previous / next marker
L: Toggle loop
Z: Reset timeline zoom (fit all)

Project

Ctrl + S: Save
Ctrl + Shift + S: Export project as JSON file
Ctrl + Shift + O: Import project from JSON file
Ctrl + Z: Undo
Ctrl + Y: Redo

Editing

Ctrl + K: Split clip at playhead
Del: Delete selected clip
Shift + Del: Ripple delete (close gap)
Ctrl + D: Duplicate selected
Right-click clip: Context menu
Drop files: Add image / video / audio
M: Add marker at playhead (right-click flag to remove)
Shift + M: Detect onset markers from audio

View

G: Toggle gizmos
Alt + drag: Disable snap
K (hover param): Toggle keyframe
U: Show / hide keyframe sub-track
?: Show / hide this overlay
Esc: Deselect clip / close overlay

No audio loaded

or drop a file anywhere

0:00 / 0:00

IN OUT

Preview

FPS-- Esc to exit

Project Details

Project name

Canvas size ×

Timeline FPS

New Project

A few quick settings to get started — change anything later from the title.

Project name

Resolution

16:91080p 9:161080×1920 1:11080 4:51080×1350 Customset W×H

Canvas size ×

Frame rate Length — seconds (audio, if added, sets its own length)

Audio track — optional

No file selected

Accent hue

OUT

Not signed in

Export · render to MP4

Resolution Frame rate

Quality85

Range

Start (s)0.0

End (s)10.0

Fast render

10 sec

Renders frame-by-frame, faster than real-time. H.264 + AAC in MP4. Chrome/Edge only — needs WebCodecs.

Stem Separator

Load an audio track first, then come back here to separate it into stems.

The stems server is not running.

pip install demucs
python stems_server.py

Or just run start.bat — it launches the server automatically.

Demucs will separate your track into four stems.
Takes ~2-3 min on CPU for a full song.

Starting Demucs…

Separation runs in the background — you can keep editing.
The Stems button will glow green when ready.

Saved Presets

Auto-Transcribe Audio

Convert the primary audio track into synchronized subtitle segments using client-side AI. No audio leaves your machine.

Select Whisper Model

Note: The selected model is downloaded to your browser's local cache on first use. Subsequent runs are fully offline.

Initializing... 0%

Rendering MP4

Preparing…

Asset Manager

Scanning…