{ "duration": "[Repeat Item as AVAsset’s Duration]" }

let dict = [3 Dictionary] const parts = dict.duration.split(":").map(Number) let totalSeconds = 0 if (parts.length === 3) { // HH:MM:SS format const hours = parts[0] const minutes = parts[1] const seconds = parts[2] totalSeconds = hours * 3600 + minutes * 60 + seconds } else if (parts.length === 2) { // MM:SS format const minutes = parts[0] const seconds = parts[1] totalSeconds = minutes * 60 + seconds } document.write(totalSeconds)