Question

我的问题是，当连接状况很差时，活动指示器开始动画直到显示视频的第一帧，然后消失以为是视频正在播放，但是视频停止在加载的第一帧上播放，直到整个视频加载然后继续播放，如何在视频卡在帧和缓冲中时显示活动指示器，然后播放直到下一个加载的帧？

注释：
- 当互联网连接关闭时，它可以正常工作，播放视频直到显示已加载的帧和活动指示器，然后当打开我们继续播放的视频并隐藏活动指示器时，
- 在可以正常连接互联网的情况下可以正常工作
- 使用关键值的替代observevalue删除并显示指标 “ currentItem.loadedTimeRanges” /“ currentItem.playbackBufferEmpty”

我制作了一个带有avplayer的uiview类

import UIKit

import AVKit
import AVFoundation
class videoplaying: UIView {
    override static var layerClass: AnyClass {
        return AVPlayerLayer.self;
    }
    var playerlayer: AVPlayerLayer{
        return layer as! AVPlayerLayer;
    }
    var player: AVPlayer?{
        get{
            return playerlayer.player
        }
        set {
            playerlayer.player = newValue
        }
    }
    var playetitem: AVPlayerItem?


}

我在uicollectioncell中为该课程分配了一个uivew（使用情节提要） avplayer开始播放并在uicollectioncell中按播放时添加观察值

@IBAction func play(_ sender: Any) {
        activityindicator.isHidden = false
        activityindicator.startAnimating()
        self.butttoonheight.isHidden = true
        self.postimage.isHidden = true
        let url2 = URL(string: "https://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4")
        let avplayer = AVPlayer(url: url2! )
        let playeritem = AVPlayerItem(url: url2!)
        //videoss is class of type uiview
        videoss.playetitem = playeritem
        videoss.playerlayer.player = avplayer
      videoss.player?.play()
        videoss.player?.addObserver(self, forKeyPath: "currentItem.loadedTimeRanges", options: .new, context: nil)
        videoss.player?.addObserver(self, forKeyPath: "rate", options: .new
            , context: nil)
         videoss.player?.addObserver(self, forKeyPath: "currentItem.playbackBufferEmpty", options: .new, context: nil)
        playying.isHidden = false
    }

//observing when video is playing


//playpause button to play or pause video while bad network is present video is stuck on first frame and playorpause is not changing while pressed
     @IBAction func playorpause(_ sender: Any) {
            if videoss.player?.timeControlStatus == AVPlayerTimeControlStatus.paused{
                videoss.player?.play()
                playying.setImage(UIImage(named: "pas50"), for: .normal)
            }
            if videoss.player?.timeControlStatus == AVPlayerTimeControlStatus.playing{
                videoss.player?.pause()
                playying.setImage(UIImage(named: "p24"), for: .normal)
            }
        }
        override public func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
            if keyPath == "rate"{
                print(videoss.player?.rate)
                if  videoss.player?.rate == 0.0 {
                    print("dawdaopwdaopwdipo")
                }
            }
            if keyPath == "currentItem.loadedTimeRanges"{
                print("its is working")
                activityindicator.stopAnimating()
                activityindicator.isHidden = true
            }
            if keyPath == "currentItem.playbackBufferEmpty"
            {
                activityindicator.startAnimating()
                activityindicator.isHidden = false
                print("pkawdawdawd")
            }

        }

Answer 1

我通过添加一个计时器来解决此问题，该计时器每运行0.3秒，每次运行0.3秒，它会检查视频的当前时间（如果当前时间等于以前的时间），则显示视频未播放活动指示器；如果未播放，则显示视频活动指示器被隐藏，还需要检查用户是否暂停了视频，优点是您还可以在相同的功能中获得当前时间。我还尝试查看视频的播放速度，但是在互联网速度缓慢的情况下，该播放速度总是可以播放的，但实际上并非如此，

第一帧后具有慢速互联网连接的avplayer无法正常工作

1 个答案: