gistfile1.txt

export async function convertAudioToOgg(input: stream.Readable, output: string) {
    return new Promise<void>((res, rej) => {
        ffmpeg()
            .input(input)
            .audioChannels(1)
            .audioCodec('opus')
            .toFormat('ogg')
            .addOutputOptions('-avoid_negative_ts make_zero')
            .output(output)
            .on('progress', function (progress) {
                console.log('Processing: ' + progress.percent + '% done');
            })
            .on('error', function (err) {
                console.log('An error occurred: ' + err.message);
            })
            .on('end', (err, stdout, stderr) => {
                console.log(err, stdout, stderr);
                if (err) {
                    rej();
                }
                res();
            })
            .run();
    });
}