How it works
- Pick your video. Its audio is measured in 20 ms steps right in your browser.
- Every stretch quieter than the threshold and longer than the shortest pause is marked for cutting (red on the waveform).
- Play the preview — it jumps over the cuts so you hear exactly what you’ll get.
- Download the MP4, then send it to Auto Subtitles or the vertical converter.
Frequently asked questions
The cuts sound abrupt — what do I change?
Raise “Keep around speech” to 0.15–0.2 s, or increase the shortest pause so only long gaps are removed.
It cuts quiet words.
Lower the threshold (more negative dB) or press Auto again after changing the microphone level.
Is my video uploaded?
No — analysis and rendering happen on your device.