标签: avplayer

我想从服务器流式传输一首歌,这似乎与我完成的方式一样好用,但是这种方法似乎有些东西是不可能的.

我目前已经实例化了一个AVPlayer

player = [[AVPlayer alloc] initWithURL:[NSURL URLWithString:@"http://media.soundcloud.com/stream/songID?stream_token=myToken"]];

当我的应用程序认为缓冲区足够时,就调用它.

这听起来很完美,但我发现如果我停止指向AVPlayer实例,播放器会停止,如果我将应用程序推到后台,声音会消失并暂停直到应用程序返回到前台.

是否可以让歌曲继续在AVPlayer的后台播放？

如果没有,我应该看看HTTP Live Streaming吗？

我对iOS的这一方很新,我非常感谢我的同事给我的任何指导!

我正在使用以下代码从互联网上播放网址声音:

var audioPlayer = AVPlayer()

...

let audioSession = AVAudioSession.sharedInstance()
audioSession.setCategory(AVAudioSessionCategoryAmbient, error: nil)

let url = trackFileName
let playerItem = AVPlayerItem( URL:NSURL( string:url ) )
audioPlayer = AVPlayer(playerItem:playerItem)
audioPlayer.rate = 1.0;
player.play()

我正在努力确保它继续在后台播放,这就是我使用"AVAudioSession.sharedInstance()"的原因.当我通过锁定屏幕在模拟器中尝试它时,它会继续像它应该的那样播放.但是如果我在一个设备上播放它,一旦屏幕自动看起来或者我自己锁定声音就会关闭声音.

我的代码中缺少什么？

我有一个[AVAsset]数组,我正在尝试将所有这些资产组合成一个资产,以便我可以无缝播放视频(我尝试使用AVQueuePlayer,但不能无缝播放资产).

下面是我到目前为止所做的,但当我尝试播放最终乐曲时,它只播放第一首曲目,即使它表明它具有所有曲目且总持续时间等于所有曲目.

我是否错过了一个步骤,即使看起来所有曲目都在合成中？如果AVPlayerItem有多个轨道,也许我需要以不同的方式处理AVPlayer？

let playerLayer: AVPlayerLayer = AVPlayerLayer()
lazy var videoPlayer: AVPlayer = AVPlayer()

var videoClips = [AVAsset]()

let videoComposition = AVMutableComposition()
var playerItem: AVPlayerItem!
var lastTime: CMTime = kCMTimeZero

for clipIndex in videoClips {

    let videoCompositionTrack = videoComposition.addMutableTrackWithMediaType(AVMediaTypeVideo, preferredTrackID: Int32(kCMPersistentTrackID_Invalid))

    do {
        try videoCompositionTrack.insertTimeRange(CMTimeRangeMake(kCMTimeZero, clipIndex.duration),
                                                  ofTrack: clipIndex.tracksWithMediaType(AVMediaTypeVideo)[0] ,
                                                  atTime: lastTime)
        lastTime = CMTimeAdd(lastTime, clipIndex.duration)
    } catch {
        print("Failed to insert track")
    }
}
print("VideoComposition Tracks: \(videoComposition.tracks.count)") // Shows multiple tracks

playerItem = AVPlayerItem(asset: videoComposition)
print("PlayerItem Duration: \(playerItem.duration.seconds)") // Shows …

我正在播放由AVCapture录制的录制视频.我将视频URL保存在名为outputFileURL的字符串中.我尝试使用AVPlayerLayer概念播放视频.我用的代码是

AVPlayer *avPlayerq = [AVPlayer playerWithURL:outputFileURL];
avPlayerq.actionAtItemEnd = AVPlayerActionAtItemEndNone;
AVPlayerLayer *videoLayer = [AVPlayerLayer playerLayerWithPlayer:avPlayerq];
videoLayer.frame= self.view.bounds;

[self.view.layer addSublayer:videoLayer];
[avPlayerq play];

但我得到的视频不是全屏.任何人都可以帮我解决？

我正试图在登录屏幕上显示视频,如Spotify等应用程序所示.

我在做什么

要做到这一点,我正在使用AVPlayer:

self.videoPlayer = AVPlayer(playerItem: item)
self.videoView.player = self.videoPlayer
self.videoPlayer.play()

该videoView是描述一个自定义UIView类在这里.

我将AVLayer的videoGravity设置为AVLayerVideoGravityResizeAspectFill:

self.videoView.playerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill

问题

但是,当我尝试填写视图边界时,我的视频仍然是letterboxed:

我想要的是

我想要的是让视频填满整个边界,没有任何黑条.我不在乎视频的一部分是否被剪裁:

附加信息

当我查看已弃用的MPMoviePlayerController的缩放模式属性时,我找到了aspectFill属性的以下描述:

均匀缩放影片,直到影片填充视图的可见边界.剪切两个尺寸中较大尺寸边缘的内容,使另一个尺寸精确地适合视图.保留电影的宽高比

从这个描述来看,这是我想要的确切行为.但是,正如已经说明的那样,我的视频得到了信箱.我做错了还是Apple停止支持这种缩放？如果我不关心被剪辑的部分视频,我是否必须自己实施此缩放？

感谢任何帮助,谢谢.

我想打它存储在我的设备试图既视频AVPlayer和MPMoviePlayerController.视频URl是:file:///var/mobile/Containers/Data/Application/73695F3E-9351-447B-BB8A-0B4A62CE430F/Documents/08-03-201711:48:50.3gp.现在的问题是我得到了空白屏幕.

AVPlayer *player = [AVPlayer playerWithURL:fileURL];
AVPlayerViewController *playerViewController = [AVPlayerViewController new];
[player pause];
[player play];
playerViewController.player = player;

[self addChildViewController: playerViewController];
[self.view addSubview: playerViewController.view];
//[playerViewController.player play];//Used to Play On start
[self presentViewController:playerViewController animated:YES completion:nil];

我认为问题在于链接.我正在做的是获取本地目录链接并使用该链接追加名称.

我是新手使用AVPlayer for IOS swift并使其正常工作.但是我希望视频在UIView中播放,现在视频默认占用整个页面.我一直在尝试一些事情,这里没有任何作用是我的代码.我在该页面上有其他内容,这就是为什么我希望UIVIEW中的avplayer被称为newView,当我把下面的代码放到它时给我一个错误.我一直在UIView层中关注此示例AVPlayerLayer Position

    import UIKit
import AVFoundation
import WebKit
import AVKit

class ExampleTable: UIViewController {
    @IBOutlet weak var newView: UIView!

    let avPlayerViewController = CustomAVPLayerC()
    var playerView: AVPlayer?
    var AVLayer: AVPlayerLayer?


    override func viewDidAppear(_ animated: Bool) {

        let movieURL:NSURL? = NSURL(string: "my url")

        playerView = AVPlayer(url: movieURL! as URL)
        avPlayerViewController.player = playerView
        playerView?.isMuted = true
  avPlayerViewController.view.frame = newView.frame
   newView.addSubview(avPlayerViewController.view)
   addChildViewController(avPlayerViewController)
        self.present(self.avPlayerViewController, animated: true) {
            self.avPlayerViewController.player?.play()

        }

    }

    override func viewDidLoad() {
        super.viewDidLoad()

    }


} …

我的代码在模拟器中可以正常运行，并且可以毫无问题地传输URL。但是，当插入实际设备时，它不会播放音频。我的代码如下

var playerItem: AVPlayerItem?
var player: AVPlayer?

func initPlayer() {
    let url:URL = URL(string:"https://storage.googleapis.com/purelightdatabucket/samples%2F60-Energy%20UPLIFT.mp3")!
    self.playerItem = AVPlayerItem(url: url)
    self.player=AVPlayer(playerItem: self.playerItem!)
    let playerLayer=AVPlayerLayer(player: self.player!)
    playerLayer.frame = CGRect(x: 0, y: 0, width: 10, height: 50) // actually this player layer is not visible
    self.view.layer.addSublayer(playerLayer)
}

我使用Av播放器视图控制器创建了一个启动视频.它适用于所有设备,除了我的手机X.我尝试改变视频重力框架和一切,但它不会工作.关于这个的任何想法？这是示例代码:

guard let videoPath = Bundle.main.path(forResource: "Redtaxi-splash", ofType:"mov") else {
    return
}

let videoURL = URL(fileURLWithPath: videoPath)
let player = AVPlayer(url: videoURL)
playerViewController = AVPlayerViewController()
playerViewController?.player = player
playerViewController?.showsPlaybackControls = false
playerViewController?.view.frame = view.frame
playerViewController?.view.backgroundColor = .white
playerViewController?.view.contentMode = .scaleAspectFill


NotificationCenter.default.addObserver(self, selector: #selector(playerDidFinishPlaying(note:)),
                                       name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: player.currentItem)

view.addSubview((playerViewController?.view)!)
playerViewController?.player?.play()

我正在编写的音乐播放器应用程序，Swift带有音频流AVPlayer且一切正常

但是，当我尝试将MPRemoteCommandCenter添加到我的应用程序时，我什至不知道为什么会发生很多错误

链接到描述我的问题的视频

AVPlayer的实现方式如下：

func setupPlayer() {
    let item = AVPlayerItem(url: musicURL)
    self.player = AVPlayer.init(playerItem: item)
    self.player.play()
    self.player.volume = 1
    self.player.addPeriodicTimeObserver(forInterval: CMTimeMakeWithSeconds(1, preferredTimescale: 1), queue: DispatchQueue.main, using: { (time) in
        if self.player.currentItem?.status == .readyToPlay {
            self.reloadNowPlayingInfo()
            let currentTime = self.player.currentTime().seconds
            self.playingTime.text = currentTime.getTimeString()
            self.playerSlider.value = currentTime/duration
        }
    })
}

func reloadNowPlayingInfo() {
    var info = [String : Any]()
    info[MPMediaItemPropertyTitle] = self.titleText
    info[MPMediaItemPropertyArtwork] = MPMediaItemArtwork.init("some image")
    info[MPMediaItemPropertyPlaybackDuration] = seconds
    info[MPNowPlayingInfoPropertyElapsedPlaybackTime] = currentSecs
    info[MPMediaItemPropertyArtist] = "Artist name"
    MPNowPlayingInfoCenter.default().nowPlayingInfo …