What's the right way to set AVCaptureDevice's activeFormat?

[abhinandan-chakraborty]

Hi, I am trying to set activeFormat on my AVCaptureDevice for spatial capture (iOS 18 Beta). But I want to know if this is the right way to set the activeFormat in HaishinKit. Here's what I tried:

let session = AVAudioSession.sharedInstance()
do {

    try session.setCategory(.playAndRecord, mode: .default, options: [.defaultToSpeaker, .allowBluetooth])
    try session.setActive(true)

    //setting up the connection
    let connection = RTMPConnection()
    var stream = RTMPStream(connection: connection)

   //camera device
     guard let videoDevice = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .back) else {
           return
      }
    //Apple recommended code to set active format for spatial capture in iOS 18
      if #available(iOS 18, *) {
                for format in videoDevice.formats {
                    if format.isSpatialVideoCaptureSupported {
                        try videoDevice.lockForConfiguration()
                        videoDevice.activeFormat = format //<-- will this be overwritten when attachCamera will be called?
                        videoDevice.unlockForConfiguration()
                    }
                }
      }

    //attach audio stream
    stream.attachAudio(AVCaptureDevice.default(for: .audio)) { _, error in
         if let error {
                  //print error
         }
    }

    //now attach video stream
    stream.attachCamera(videoDevice) { videoUnit, error in
         if let error {
                 //print error
         } else {
         }
     }

    //start streaming
    connection.connect("rtmp://ip/live")
    stream.publish("hello")

} catch {
    //print error
}