AVAudioRecorder record stream audio - ios

Question

I have an app that playing stream audio. How can I record streaming audio from AVPlayer using AVAudioRecorder (or something another?). Thanks.

Answer 1

Swift 3+
Here is simple VC which will save audio session to documents dir (audio.aac)
import UIKit
import AVFoundation
class ViewController: UIViewController {
var audioRecorder: AVAudioRecorder?
override func viewDidLoad() {
super.viewDidLoad()
verifyRecordPermission()
}
#IBAction func recordButonAction(_ sender: UIButton) {
if audioRecorder?.isRecording == true {
audioRecorder?.stop()
sender.setTitle("Record", for: .normal)
}
else {
startRecording()
sender.setTitle("Stop", for: .normal)
}
}
func verifyRecordPermission() {
let permission = AVAudioSession.sharedInstance().recordPermission()
switch permission {
case .denied:
print("recording not allowed")
case .granted:
print("recording allowed")
default:
AVAudioSession.sharedInstance().requestRecordPermission() { (granted) -> Void in
print("recording granted:\(granted)")
}
}
}
func startRecording() {
guard AVAudioSession.sharedInstance().recordPermission() == .granted else {
return
}
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let audioUrl = URL(fileURLWithPath: "\(documentsPath)/audio.aac")
let session = AVAudioSession.sharedInstance()
do {
try session.setCategory(AVAudioSessionCategoryRecord)
try session.setActive(true)
try audioRecorder = AVAudioRecorder(url: audioUrl,
settings: [AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
AVSampleRateKey: 24000.0,
AVNumberOfChannelsKey: 1 as NSNumber,
AVEncoderAudioQualityKey: AVAudioQuality.high.rawValue])
} catch {
// handle error...
return
}
guard let audioRecorder = audioRecorder else {
return
}
audioRecorder.prepareToRecord()
audioRecorder.record()
}
func stop(session: AVAudioSession = AVAudioSession.sharedInstance()) {
audioRecorder?.stop()
audioRecorder = nil
do {
try session.setActive(false)
} catch {
// handle session errors
}
}
}