Detect Silence in Audio and Video, Export Timestamps

Before you write an adaptation or prepare a dubbing script, you need to know where the lines are: when each character starts speaking, when they stop, and where the breaths fall. This job, called spotting in the studio, takes a long time by hand.

This tool analyzes the soundtrack of a video or audio file and will detect silence in it. It then builds a list of lines of speech with their start, end and duration, which you can copy as text or download as an SRT file to open in a subtitling app. Three settings let you adapt the detection to your scene: the volume treated as silence, the minimum length of a pause, and a padding added around each line.

Detection is based on volume, so loud music or constant background noise can hide the pauses. It does not transcribe the words. Your video never leaves your device: it is processed right in your browser, with no upload and no sign-up.