Text to Speech
Generate speech audio from subtitle text using various TTS engines.
- Menu: Video → Text to speech…
- Shortcut: Configurable
How to Use
- Open Video → Text to speech…
- Select a TTS engine from the dropdown
- Select a language and voice
- Optionally enable Review audio clips to review each generated clip
- Optionally enable Generate video file to create a video with the audio
- Click Generate to start
Supported Engines
- Piper — Local, open-source TTS
- AllTalk — Local TTS server
- ElevenLabs — Cloud-based, high-quality voices (requires API key)
- Azure Cognitive Services — Microsoft cloud TTS (requires API key and region)
- Google Cloud — Google cloud TTS (requires key file)
- Murf.ai — Cloud TTS (requires API key)
Engine Settings
Some engines require additional configuration:
- API Key — Enter your API key for cloud-based engines
- Region — Select the Azure region (for Azure engine)
- Model — Select the voice model
- Key file — Browse for Google Cloud service account key file
Review Audio Clips
When Review audio clips is enabled, a dedicated review window opens after generation. This window lets you inspect, play, and regenerate audio for every subtitle line before the result is used.
The Review Grid
Each subtitle line is shown as a row with the following columns:
| Column | Description |
|---|---|
| Include | Checkbox to include or exclude the line from the final output |
| # | Subtitle line number |
| Text | The subtitle text (editable — double-click to modify before regenerating) |
| Voice | The voice used for that line |
| Speed | The speed factor applied to fit the audio into the subtitle’s duration |
| CPS | Characters per second for the subtitle line |
Playback Controls
- Play — Plays the selected line’s audio clip
- Stop — Stops playback
- Auto-continue — When enabled, playback automatically advances to the next line as soon as the current clip finishes
Regenerating a Clip
You can regenerate the audio for any individual line:
- Select the line in the grid
- Choose the desired engine, voice, language, model, or style from the dropdowns
- Click Regenerate or press Ctrl+R
The new clip is trimmed for silence and automatically speed-adjusted to fit the subtitle timing. After regeneration the new clip plays back immediately for review.
For ElevenLabs, extra fine-tuning parameters are available when that engine is selected: Stability, Similarity, Speaker Boost, Speed, and Style Exaggeration. A Reset button restores all ElevenLabs parameters to their defaults.
Regeneration History
Every time a clip is regenerated, the previous version is saved. To review the history for a line, click the History button on that row. The history dialog shows all generated versions with their voice name and speed, and lets you play each one. Selecting a version and clicking OK restores it as the active clip for that line.
Including / Excluding Lines
Uncheck the Include checkbox on any row to exclude that line’s audio from the final output. Excluded lines are skipped when the video file is assembled.
Exporting Clips
Click Export to save all audio clips and a SubtitleEditTts.json metadata file to a folder of your choice. The JSON file records the audio file names, subtitle timings, voice names, engine names, speed factors, and text for each line, making it easy to re-import or post-process the clips externally.
Keyboard Shortcuts
| Key | Action |
|---|---|
| Ctrl+R | Regenerate selected line |
| Escape | Close / Cancel |
| F1 | Open help |