如何在Xcode macOS Cocoa Application中嵌入和流式传输来自网络的视频？ [英] How to embed and stream a video from the web within an Xcode macOS Cocoa Application?

问题描述

我正在尝试让我的 macOS Cocoa应用程序 Xcode项目在输入指定的URL时播放某些视频。

I am trying to get my macOS Cocoa Application Xcode project to play some video when I feed it a specified URL.

为简化问题，我们只使用一个空的Xcode项目。

To simplify the question lets just use an empty Xcode project.

我希望获得与我在<< c> c中使用 AVPlayerViewController（）所能达到的控制水平相同的控制水平。 strong> iOS单一视图应用程序。在该应用程序中，我目前正在此处使用提供的解决方案。

I want to achieve the same level of control as I am able to get using AVPlayerViewController() in my iOS Single View Application. Within that app I am currently using the solution offered here.

但是，这样修改后，只有第二个示例在我的macOS Cocoa应用程序中有效：

import Cocoa
import AVFoundation
import AVKit

class ViewController: NSViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let videoURL = URL(string: "https://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4")
        let player = AVPlayer(url: videoURL!)
        let playerLayer = AVPlayerLayer(player: player)
        playerLayer.frame = self.view.bounds
        self.view.layer?.addSublayer(playerLayer)
        player.play()

    }

    override var representedObject: Any? {
        didSet {
        // Update the view, if already loaded.
        }
    }


}

此选项具有 2个缺点：

1. 此选项会在控制台中创建重复的错误消息：

1. It creates a repetitive error message in the console:

2017-06-27 18:22:06.833441+0200 testVideoOnmacOS[24456:1216773] initWithSessionInfo: XPC connection interrupted
2017-06-27 18:22:06.834830+0200 testVideoOnmacOS[24456:1216773] startConfigurationWithCompletionHandler: Failed to get remote object proxy: Error Domain=NSCocoaErrorDomain Code=4097 "connection to service named com.apple.rtcreportingd" UserInfo={NSDebugDescription=connection to service named com.apple.rtcreportingd}

此 AVPlayer 解决方案不能提供与 AVPlayerViewController（）解决方案相同的控件。

This AVPlayer solution does not offer the same control as the AVPlayerViewController() solution.

所以我试图使以下AVPlayerViewController（）解决方案正常工作。但是失败了：

import Cocoa
import AVFoundation
import AVKit

class ViewController: NSViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let videoURL = URL(string: "https://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4")
        let player = AVPlayer(url: videoURL!)
        let playerViewController = AVPlayerViewController()
        playerViewController.player = player
        self.present(playerViewController, animated: true) {
            playerViewController.player!.play()
        }

    }

    override var representedObject: Any? {
        didSet {
        // Update the view, if already loaded.
        }
    }


}

我遇到的错误是：

使用未解析的标识符'AVPlayerViewController'-您是说
'AVPlayerViewControlsStyle'吗？

Use of unresolved identifier 'AVPlayerViewController' - Did you mean 'AVPlayerViewControlsStyle'?

我已经尝试了多种解决方法。如果我把它们全部拼出来，那会让人困惑。我的主要问题似乎是绝大多数在线示例都基于iOS。

I have tried to work around this in many different ways. It will be confusing if I spell them all out. My prominent problem seems to be that the vast majority of online examples are iOS based.

因此，主要问题是：

Thus, the main question:

我将如何能否在我的Xcode macOS可可应用程序中成功使用AVPlayerViewController？

推荐答案

是，成功了！

感谢ninjaproger的评论。

Thnx to ninjaproger's comment.

此操作似乎是为了使Web上的视频可以在 Xcode Cocoa Application 上播放/流式传输强>。

This seems to work in order to get a video from the web playing / streaming on a macOS Cocoa Application in Xcode.

首先，在情节提要中创建一个 AVKitPlayerView 并将其作为IBOutlet链接到您的NSViewController。

First, create a AVKitPlayerView on your storyboard and link it as an IBOutlet to your NSViewController.

然后，只需应用以下代码：

Then, simply apply this code:

import Cocoa
import AVFoundation
import AVKit

class ViewController: NSViewController {
    @IBOutlet var videoView: AVPlayerView!

    override func viewDidLoad() {
        super.viewDidLoad()

        let videoURL = URL(string: "https://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4")
        let player = AVPlayer(url: videoURL!)
        let playerViewController = videoView
        playerViewController?.player = player
        playerViewController?.player!.play()

    }

    override var representedObject: Any? {
        didSet {
        // Update the view, if already loaded.
        }
    }


} 

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