use Laracasts\Transcriptions\Transcription;

$transcription = Transcription::load('path/to/file.vtt');

foreach ($transcription->lines() as $line) {
    // $line->body
    // $line->toHtml()
    
    // $line->timestamp->begin()
    // $line->timestamp->beginSeconds()
    // $line->timestamp->end()
    // $line->timestamp->endSeconds()
    
    // json_encode($line);
}

// Group lines into full sentences.
// $transcription->lines()->groupBySentence();