iOS/tvOS Players

SDK for Brightcove Player

This article details how to integrate CDN Mesh Delivery into your mobile app using Brightcove Player on iOS and tvOS

 

Not into tutorials?

 

Brightcove Player

The Brightcove iOS and tvOS Player SDK is a mobile player that provide tools for building video-enabled apps for iOS and tvOS.

To learn more about the Brightcove Player SDKs, please refer to their documentation.

 

Project setup

CocoaPods

Note
Cocoapods 1.6.0 + is recommended

To integrate StreamrootSDK and Brightcove Player SDK into your Xcode project using CocoaPods, specify this in your Podfile:

use_frameworks!
target ' <Your Target Name >'
  pod 'StreamrootSDK', '~> 3.24.0'
  pod 'Brightcove-Player-Core/dynamic',
end

Then, run the following command:

$ pod update

Finally, open the generated Workspace.

 

Integrate Streamroot SDK

1. Import the SDK

import StreamrootSDK

 

2. Set the streamrootKey

In the Project Navigator, right click on the main target "Info.plist", and "Open as" → "Source Code".

Add the following lines with the values of the right parameters:

<key>Streamroot</key>
<dict>
  <key>Key</key>
  <string>streamrootKey</string>
</dict>

Here, <streamrootKey> refers to your Streamroot key that you will find in the Account section of the Streamroot Dashboard. If you don't have a Streamroot Key, you can register for a free trial account on our website.

 

3. Declare the Mesh Delivery Client as an Instance Variable

var dnaClient: DNAClient?

 

4. Build and start the Mesh Delivery Client

do {
    dnaClient = try DNAClient.builder()
        .dnaClientDelegate(self)
        .latency(30)
        .streamrootKey(<#streamrootKey#>)
        .start(manifestUrl)
} catch let error {
    print("\(error)")
}

 

Parameter name Mandatory Description
manifestUrl Yes The HLS .m3u8 master playlist URL needsed to be passed to the dnaClient
latency Yes The delay between the playback time and the live edge. To get the best offload capacity, we recommend setting 30s.
streamrootKey Yes The unique Streamroot key that we have assigned to you; make sure it is identical to the one provided in the Account section of your dashboard.

 

Other DNA options can be called in the builder. Please refer to this article to learn more about them.

 

5. Play the stream

playbackService.findVideo(withVideoID: ConfigConstants.VideoID, parameters: nil) { [weak self] (video: BCOVVideo?, json: [AnyHashable:Any]?, error: Error?) in
    guard let self = self else { return }
            
    if let error = error {
        print("ViewController Debug - Error retrieving video playlist: \(error.localizedDescription)")
        return
    }
            
    guard let video = video else {
        return
    }
            
    // Look for an HLS stream to setup streamroot DNA client
    let hlsSource = video.sources
        .compactMap { $0 as? BCOVSource }
        .filter { $0.deliveryMethod ==  "application/x-mpegURL"}
        .first
            
     guard hlsSource != nil else {
         self.playbackController?.setVideos([video] as NSFastEnumeration)
         return
      }
            
      self.setupDnaWithSource(hlsSource!)
            
      guard let localManifest = self.dnaClient?.manifestLocalURLPath else {
          self.playbackController?.setVideos([video] as NSFastEnumeration)
          return
       }
            
       let dnaVideo = BCOVVideo(hlsSourceURL: URL(string: localManifest)!)
       self.playbackController?.setVideos([dnaVideo] as NSFastEnumeration)
}

localManifest refers to the HLS .m3u8 master playlist URL that will be passed to the player.

In order to improve the peer traffic offload for Live streaming, we highly recommend setting different buffer levels for each player.

Here, at player instantiation, we will distribute the buffer target between 10 and the latency set above (30s recommended).

The maximum buffer target will then dynamically evolve for greater Mesh Delivery efficiency (Only from SDK 3.9.0).

 

6. Implement DNAClientDelegate

It is first needed to add the DNAClientDelegate in an extension.

extension ViewController: DNAClientDelegate {

    func playbackTime() -> Double {
        if let player = self.currentPlayer {
            return CMTimeGetSeconds(player.currentTime())
        }
        return 0
    }

    func loadedTimeRanges() -> [NSValue] {
        guard let player = self.currentPlayer else {
            return []
        }

        guard let playerItem = player.currentItem else {
            return []
        }

        return playerItem.loadedTimeRanges.map { (value) -> NSValue in
            NSValue(timeRange: TimeRange(range: value.timeRangeValue))
        }
    }

    func updatePeakBitRate(_ bitRate: Double) {
        currentPlayer?.currentItem?.preferredPeakBitRate = bitRate
    }

    func setBufferTarget(_ target: Double) {
        self.currentPlayer?.currentItem?.preferredForwardBufferDuration = target
    }

    func bufferTarget() -> Double {
        guard let item = self.currentPlayer?.currentItem else {
            return 0
        }
        return item.preferredForwardBufferDuration
    }
}

 

Method name Mandatory Description
playbackTime Yes Must return the current time of the player in seconds.
loadedTimeRanges Yes Must return an array of NSValue. Each NSValue must contain a TimeRange object (in seconds).
bitrate Yes Must be implemented to update the player with the new bitrate.
bufferTarget No Should be implemented to update the player with dynamic buffer target.

 

Important
As our SDK will dynamically update buffer target to optimize peer offload, it is recommended to deactivate Brightcove buffer own optimization to prevent conflicts.

controller?.disableBufferOptimisation()func playbackController(_ controller: BCOVPlaybackController!, didAdvanceTo session: BCOVPlaybackSession!) {
    print("ViewController Debug - Advanced to new session.")
    currentPlayer = session.player
    controller?.disableBufferOptimisation()
}

 

Stop the SDK

dnaClient?.stop()

 

Disable App Transport security

In the Project Navigator, right click on "Info.plist", and "Open as" → "Source Code".

Add the following lines with the corresponding parameters values.

<key>NSAppTransportSecurity</key>
<dict> 
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

 

Integrating with the Brightcove SSAI Plugin

If you are using the SSAI plugin provided by Brightcove, you will need to perform this steps instead.

Specify this in your Podfile:

use_frameworks!
target ' <Your Target Name >'
  pod 'StreamrootSDK', '~> 3.14.0'
  pod 'Brightcove-Player-SSAI/dynamic',
end

 

Use this method to retrieve and play the stream (instead of Step 5)

playbackService.findVideo(withVideoID: Constants.VideoId, parameters: queryParameters) { [weak self] (video: BCOVVideo?, jsonResponse: [AnyHashable: Any]?, error: Error?) -> Void in
            
    guard let self = self else { return }
            
    if let error = error {
        print("ViewController Debug - Error retrieving video playlist: \(error.localizedDescription)")
        return
    }
            
    guard let video = video else {
        return
    }
            
    // Look for an HLS stream to setup streamroot DNA client
    let hlsSource = video.sources
        .compactMap { $0 as? BCOVSource }
        .filter { $0.deliveryMethod ==  "application/x-mpegURL.boltSSAI"}
        .first
            
    guard hlsSource != nil else {
        self.playbackController?.setVideos([video] as NSFastEnumeration)
        return
    }
            
    self.setupDnaWithSource(hlsSource!)
            
    guard let localManifest = self.dnaClient?.manifestLocalURLPath else {
        self.playbackController?.setVideos([video] as NSFastEnumeration)
        return
    }
            
    let dnaVideo = BCOVVideo(url: URL(string: localManifest)!,
                         deliveryMethod: "application/x-mpegURL.boltSSAI")
    self.playbackController?.setVideos([dnaVideo] as NSFastEnumeration)
}

A full sample application can be found here.

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