1， 只用AVPlayer播放器

let player = AVPlayer(url: URL(string:path))

body中写法

VideoPlayer(player: player)

通过监听视频播放结束，手动重新播放

.onReceive(NotificationCenter.default.publisher(for: Notification.Name.AVPlayerItemDidPlayToEndTime), perform: { value in
            self.player.seek(to: .zero)
            self.player.play()
        })

2，使用AVPlayerLooper， AVQueuePlayer，AVPlayerItem

      let player = AVQueuePlayer()
      let playItem = AVPlayerItem(url: URL(string:path))
       self.playerLooper = AVPlayerLooper(player: player, templateItem: playItem)
       Player.play()

默认情况下，播放的视频回到后台会暂停，要想重新播放，可以添加 @Environment(.scenePhase) private var scenePhase环境变量，然后

.onChange(of: scenePhase) { value in
            switch value {
            case .active:
                // 回到前台
                if player.status == .readyToPlay {
                    player.play()
                }
            default:
                break
            }
        }

实现回到前台继续播放