Host a Low Latency Camera Stream

This guide shows you how to use our low latency live streaming framework to broadcast (1:n) a camera stream to multiple devices.

Setup

Make sure you followed the guide to use our live framework in your project.

Import our Live Framework in your ViewController.

import VideoKitLive

Now, in our viewDidLoad

• We setup the live preview view, which will give us a preview of what we are going to stream
• Prepare the stream,
• Set our desired parameters,
• And start hosting the broadcast

Stream Using Back Camera

override func viewDidLoad() {
    let streamView = UIView(frame: .zero)
    view.addSubview(streamView)
    streamView.translatesAutoresizingMaskIntoConstraints = false
    NSLayoutConstraint.activate([
        streamView.topAnchor.constraint(equalTo: view.topAnchor),
        streamView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
        streamView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
        streamView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
    ])
    
    let vkLive = VKLiveStream()
    
    // Set camera to back camera (default is back)
    vkLive.streamer.cameraPosition = .front
    
    // We want to stream video and audio (other options for instance are cameraVideoOnly or audioOnly)
    vkLive.streamer.streamingMode = .cameraVideoAndAudio
    
    // Start hosting inside your view streamView
    // This will initialize the stream on our backend, prepare your camera and preview view 
    // and give you a VKStreamerProtocol instance (streamer) to start broadcasting
    vkLive.host(type: .lowLatency, inView: streamView) { (streamer, stream, error) in
        guard let stream = stream else {
            print("There was an error starting your stream.")
            return
        }
        
        // Start broadcasting your stream
        streamer.start()
        
        print("Stream started: \(stream.id)")
        print("Playback url: " + stream.getPlaybackUrl()?.absoluteString ?? "Error retrieving stream URL")
    }
}

Stop Streaming

vkLive.stopHosting(stream: stream) { (success) in
    print("Stream ended.")
}