Subtitle Edit

the subtitle editor :)

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Beautify Time Codes

Snap subtitle in- and out-cues to shot changes, frame boundaries, and minimum-gap / duration rules in one pass, using a fully configurable profile.

• Menu: Tools → Beautify time codes…
• Profile editor: Options → Settings → Waveform → gear icon next to Snap to shot changes, or Edit beautify time codes profile… button inside the tool window.

Tool window

The window shows the loaded subtitle in two stacked waveform visualizers:

• Original — the subtitles as they are now.
• Beautified — the result of applying the current profile. This view updates live every time the profile changes.

Above the visualizers a stats line summarises the run:

Subtitles: N · Changed: M · Frame rate: 25 · Shot changes: K

Below the visualizers, the change navigator lets you step through every cue the beautify pass moved:

• ▲ / ▼ — previous / next change. Both visualizers center on the change.
• Change X of Y — position counter.
• Detail line — #15 Start: 00:01:23,456 → 00:01:23,400 (−56 ms / −1.4 f) End: …
• Reason line — italic, dimmed: explains why the cue moved, per side:
  • Start: snapped to shot change
  • End: snapped to frame
  • Start: min. gap enforced — start landed exactly on previous end + min. gap.
  • End: min. gap enforced — end landed exactly on next start − min. gap.
  • Duration: min. duration enforced / max. duration enforced — duration was clamped to the Subtitle min/max display milliseconds general setting.
  • — when no reason is detected (e.g. chaining / connected-subtitle adjustments).

Press OK to apply the beautified cues to the subtitle, or Cancel to discard.

Profile editor

The profile editor controls exactly how cues are moved. It is independent of which subtitle is loaded, and persists across Subtitle Edit restarts via the main Settings.json.

Presets

Load a known-good configuration from the Load preset menu at the bottom of the dialog:

• Default — sensible general defaults.
• Netflix — matches Netflix’s Timed Text Style Guide timing rules (2-frame min. gap, 12-frame green zones around shot changes, Extend until shot change chaining).
• SDI — for SDI-style broadcast work (4-frame gap, larger zones).

Presets overwrite all profile values. Use them as a starting point.

General

• Gap — the project-wide minimum gap, in frames. Changing this value also rewrites all per-section gap fields below that are currently non-zero, so a custom value in one place doesn’t silently disagree with the global.

In cues / Out cues

For a paragraph in-cue (start) or out-cue (end), the profile defines a snap window around the nearest shot change:

• Gap — for out-cues, how far before a shot change the cue should be placed (in frames). For in-cues this is 0 by default (start on the shot change).
• Zones — four numeric fields, left-to-right:
  • Left green — soft, advisory zone before the shot change.
  • Left red — hard snap zone before the shot change. A cue dragged into this range snaps to the shot change.
  • Right red — hard snap zone after the shot change.
  • Right green — soft, advisory zone after the shot change.

The preview to the right of each section shows the current setup: gray gap area, red and green zones around the center line (the shot change), and the two subtitle blocks pressed up against the gap.

Connected subtitles

When two consecutive subtitles are connected (separated by less than Treat as connected if gap smaller than milliseconds), the beautifier preserves their relationship instead of treating each cue independently. The same zone logic applies, but with separate gap values depending on whether the in cue or out cue is closer to the shot change. Use the inner tab control to switch between the two cases.

Chaining

When two consecutive subtitles almost touch but a shot change sits between them, the beautifier can chain them — extending one to meet the other — based on the General, In cue on shot change, and Out cue on shot change sub-tabs.

Each sub-tab offers:

• Max gap (radio) / Zones (radio) — choose whether to gate the chaining by an absolute gap budget in milliseconds, or by frame-based zones identical to the In/Out cue zones.
• If there is a shot change in between (General tab only) — controls the behavior across a shot change:
  • Don’t chain — leave the gap untouched.
  • Extend across shot change — let the previous cue cross the shot.
  • Extend until shot change — extend up to the shot, but not past it. (Netflix preset default.)
• Apply ‘general’ chaining rules too (In/Out tabs) — also apply the General tab’s chaining rules to this scenario.

Snap-to-shot-changes while editing

The profile’s In cues / Out cues red zones also drive the snap distance when you drag a paragraph edge in the main waveform:

• Drag a paragraph start into the red zone around a shot change → snaps to the shot change.
• Drag a paragraph end into the red zone → snaps to one frame before the shot change (so the cue doesn’t bleed onto the next shot).
• Hold Shift while dragging to bypass the snap entirely.

Toggle the whole behavior with Snap to shot changes (hold Shift to override) in Options → Settings → Waveform.

Related

• Shot Changes — detecting and importing the shot-change list that this tool relies on.
• Audio Visualizer — the waveform editor where snap-to-shot-changes happens during normal editing.