iOS - converting to fmp4 (from mp4/m4a) and streaming it - ios

Question

So I didn't managed to find any code about this issue.
I have recorded an mp4 file(audioFile.mp4) and now i want to stream it through socket , yet i have problem in converting.
I know that there is the ffmpeg(https://www.ffmpeg.org/) platform yet i didn't see any code of that.
Would appreciate any idea.
class ViewController: UIViewController {
var requestManager = RequestManager()
var socket: WebSocket?
var audioRecorder: AVAudioRecorder!
#IBOutlet weak var recordBtn: UIButton!
#IBOutlet weak var playBtn: UIButton!
var fileName: String = "audioFile.mp4"
var soundRecorder: AVAudioRecorder?
var soundPlayer: AVAudioPlayer?
var audioSession = AVAudioSession.sharedInstance()
override func viewDidLoad() {
super.viewDidLoad()
self.socket?.delegate = self
setUpRecorder()
playBtn.isEnabled = false
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
self.audioSession = AVAudioSession.sharedInstance()
do {
try audioSession.setCategory(AVAudioSession.Category.playAndRecord, mode: .measurement, options: .defaultToSpeaker)
try audioSession.setActive(true, options: .notifyOthersOnDeactivation)
} catch {
print(error)
}
}
func getDocDirector() -> URL {
let path = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
return path[0]
}
func setUpRecorder() {
let audioFileName = getDocDirector().appendingPathComponent(fileName)
let recordSettings: [String: Any] = [AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
AVEncoderAudioQualityKey: AVAudioQuality.max.rawValue,
AVNumberOfChannelsKey: 1,
AVEncoderBitRateKey: 16000,
AVSampleRateKey: 16000]
do {
soundRecorder = try AVAudioRecorder(url: audioFileName, settings: recordSettings)
soundRecorder?.delegate = self
soundRecorder?.prepareToRecord()
} catch {
print(error)
}
}
func setUpPlayer() {
let audioFileName = getDocDirector().appendingPathComponent(fileName)
do {
soundPlayer = try AVAudioPlayer(contentsOf: audioFileName)
soundPlayer?.delegate = self
soundPlayer?.prepareToPlay()
soundPlayer?.volume = 1.0
} catch {
print(error)
}
}
#IBAction func recordAction(_ sender: Any) {
if recordBtn.titleLabel?.text == "Record" {
soundRecorder?.record()
recordBtn.setTitle("Stop", for: .normal)
playBtn.isEnabled = false
} else {
soundRecorder?.stop()
recordBtn.setTitle("Record", for: .normal)
playBtn.isEnabled = false
}
}
#IBAction func playAction(_ sender: Any) {
if playBtn.titleLabel?.text == "Play" {
playBtn.setTitle("Stop", for: .normal)
recordBtn.isEnabled = false
setUpPlayer()
soundPlayer?.play()
} else {
playBtn.setTitle("Play", for: .normal)
recordBtn.isEnabled = false
}
}
func openSocket() {
getUrl(success: { [weak self] (url) in
self?.socket = WebSocket(url: URL(string: url)!)
self?.socket?.connect()
}) { (e) in
//
}
}
}