DevelopmentiOS

[iOS/Snippet] 자막과 함께 동영상 재생하기

iOS

url과 vtt형식의 자막파일을 같이 받았을 때, 동영상을 전체화면으로 재생하는 소스코드다.

만약 앱 내부에 동영상 플레이어를 위치시키고 싶다면 하단의 소스 몇줄만 수정해주면 된다.

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import AVKit

func playVideo(url: String, vtt: String) {
  guard let myURL = URL(string: url) else { return }
  guard let mySubtitleURL = URL(string: vtt) else { return }
  let videoAsset = AVAsset(url: myURL)
  let subtitleAsset = AVAsset(url: mySubtitleURL)
  let mixComposition = AVMutableComposition()

  let videoTrack = mixComposition.addMutableTrack(
    withMediaType: .video,
    preferredTrackID: kCMPersistentTrackID_Invalid
  )
  let audioTrack = mixComposition.addMutableTrack(
    withMediaType: .audio,
    preferredTrackID: kCMPersistentTrackID_Invalid
  )
  let subtitleTrack = mixComposition.addMutableTrack(
    withMediaType: .text,
    preferredTrackID: kCMPersistentTrackID_Invalid
  )
  let videoDuration = CMTimeRange(start: kCMTimeZero, end: videoAsset.duration)

  try! videoTrack?.insertTimeRange(
    videoDuration,
    of: videoAsset.tracks(withMediaType: .video)[0],
    at: kCMTimeZero
  )
  try! audioTrack?.insertTimeRange(
    videoDuration,
    of: videoAsset.tracks(withMediaType: .audio)[0],
    at: kCMTimeZero
  )
  try! subtitleTrack?.insertTimeRange(
    videoDuration,
    of: subtitleAsset.tracks(withMediaType: .text)[0],
    at: kCMTimeZero
  )

  let player = AVPlayer(playerItem: AVPlayerItem(asset: mixComposition))
  let playerViewController = AVPlayerViewController()
  playerViewController.player = player
  self.present(playerViewController, animated: true) {
    playerViewController.player!.play()
  }
}
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