Audio Visualizer

The audio visualizer displays the audio waveform (and/or spectrogram) of the loaded video, enabling precise visual timing of subtitles.

<!-- Screenshot: Audio visualizer -->

Display Modes

• Waveform — Shows audio amplitude over time
• Spectrogram — Shows frequency distribution over time

Mouse Controls

Navigation

Mouse Action	Effect
Scroll wheel	Scroll waveform left/right
Ctrl+Scroll wheel	Horizontal zoom in/out
Shift+Scroll wheel	Vertical zoom in/out
Middle-click drag	Pan the waveform

Subtitle Timing

Mouse Action	Effect
**Click + Ctrl (cmd on mac) + Shift **	Set start and offset the rest
**Click + Shift **	Set start of current
**Click + Ctrl (cmd on mac) **	Set end of current
Click on empty area	Set video position
Click on subtitle	Select the subtitle
Double-click on subtitle	Set video position and select subtitle
Drag subtitle left/right edge	Adjust start/end time
Drag subtitle body	Move entire subtitle
Right-click	Context menu

Creating New Subtitles

Mouse Action	Effect
Click+Drag in empty area	Create a new subtitle with the selected time range

Keyboard Shortcuts (Waveform)

Shortcut	Action
Set start	Set the start time of the selected subtitle
Set end	Set the end time of the selected subtitle
Set end and go to next	Set end time and move to next subtitle
Set start and offset the rest	Set start and shift all following subtitles
Set end and offset the rest	Set end and shift all following subtitles
Center on video position	Center the waveform on the current video position
Insert at position (focus text)	Insert a new subtitle at video position and focus the text editor
Insert at position (no focus)	Insert a new subtitle at video position
Seek silence	Find the next silent section

Note: Actual key bindings depend on your shortcut configuration. See Options → Shortcuts to view or change them.

Toolbar

The waveform toolbar (when visible) provides buttons for:

• Zoom in/out (horizontal and vertical)
• Toggle waveform/spectrogram mode
• Toggle grid lines

Shot Changes

Shot changes (scene cuts) are displayed as vertical lines on the waveform. These help align subtitle timing with scene transitions.

• Toggle shot change at video position — Add or remove a shot change marker
• Go to previous/next shot change — Navigate between shot changes
• Snap to nearest shot change — Align subtitle edges to nearby shot changes
• Extend to next shot change — Extend subtitle to the next scene cut

Context Menu

Right-click on the waveform for options including:

• Add subtitle at position
• Split subtitle
• Merge subtitles
• Delete subtitle
• Go to subtitle
• Zoom controls

<!-- Screenshot: Waveform context menu -->