Silencedetect into a file fluent-ffmpeg

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ffmpeg

ReactJS

I'm trying to detect the silence inside an audio file using ffmpeg's silencedetect filter and outputting the timestamps inside a txt file.

The function runs but no file is created.

What I have tried:

I've tried the following code :

return new Promise((resolve, reject) => {
    ffmpeg()
    .addInput('input.mp4')
    .audioFilters('silencedetect=n=-50dB')
    .output('output.txt')
    .outputOptions('-y', '-f', 'null')
    .on('error', (error) => {
        reject(new Error(error));
    })
    .on('progress', (progress) => {
        console.log(progress);
    })
    .on('end', () => {
        resolve();
    })
    .run();
})