如何在 iOS 中播放视频 PHAsset？

Question

我想播放来自 PHAsset 的视频，这些视频是从 iOS 照片中收集的。 PHAsset 视频 nsurl () 对我自己的应用程序有效让我们说 MyPlayer 对几个 moments/blocks。当我将 image/video 复制到 MyPlayers 自己的沙箱时，只有 nsurl 才会始终有效。在我看来，

I need to copy each video from temporary PHAsset nsurl to MyPlayers sandbox (appgroup/documents) and only then I can play the video with sandbox relative nsurl.

如果是这种情况，所有其他播放器如何即时播放长视频？如果有其他不复制到apps沙盒播放视频的方法，请告诉我方法。

Answer 1

经过几天的实验终于找到了解决办法，

导入文件

import AVKit

来自 PHAsset

static func playVideo (view:UIViewController, asset:PHAsset) {

        guard (asset.mediaType == PHAssetMediaType.Video)

            else {
                print("Not a valid video media type")
                return
        }

        PHCachingImageManager().requestAVAssetForVideo(asset, options: nil, resultHandler: {(asset: AVAsset?, audioMix: AVAudioMix?, info: [NSObject : AnyObject]?) in

            let asset = asset as! AVURLAsset

            dispatch_async(dispatch_get_main_queue(), {

                let player = AVPlayer(URL: asset.URL)
                let playerViewController = AVPlayerViewController()
                playerViewController.player = player
                view.presentViewController(playerViewController, animated: true) {
                    playerViewController.player!.play()
                }
            })
        })
    }

来自 AppLocalUrl

static func playVideo (view:UIViewController, appLocalUrl:NSURL) {

        dispatch_async(dispatch_get_main_queue(), {

            let player = AVPlayer(URL: appLocalUrl)
            let playerViewController = AVPlayerViewController()
            playerViewController.player = player
            view.presentViewController(playerViewController, animated: true) {
                playerViewController.player!.play()
            }
        })
    }

Answer 2

@Sazzad Hissain Khan 在 Swift 3 中的解决方案：

来自 PHAsset:

func playVideo (view: UIViewController, videoAsset: PHAsset) {

    guard (videoAsset.mediaType == .video) else {
        print("Not a valid video media type")
        return
    }

    PHCachingImageManager().requestAVAsset(forVideo: videoAsset, options: nil) { (asset, audioMix, args) in
        let asset = asset as! AVURLAsset

        DispatchQueue.main.async {
            let player = AVPlayer(url: asset.url)
            let playerViewController = AVPlayerViewController()
            playerViewController.player = player
            view.present(playerViewController, animated: true) {
                playerViewController.player!.play()
            }
        }
    }
}

来自 AppLocalUrl：

func playVideo (view: UIViewController, appLocalUrl: URL) {

    DispatchQueue.main.async {

        let player = AVPlayer(url: appLocalUrl)
        let playerViewController = AVPlayerViewController()
        playerViewController.player = player
        view.present(playerViewController, animated: true) {
            playerViewController.player!.play()
        }
    }
}

Answer 3

以下解决方案也适用于慢动作视频。

func playVideo(asset: PHAsset) {
    guard asset.mediaType == .video else {
        // Handle if the asset is not a video.
        return
    }

    let options = PHVideoRequestOptions()
    options.isNetworkAccessAllowed = true

    PHCachingImageManager().requestPlayerItem(forVideo: asset, options: options) { (playerItem, info) in
        DispatchQueue.main.async {
            let playerViewController = AVPlayerViewController()
            playerViewController.player = AVPlayer(playerItem: playerItem)
            present(playerViewController, animated: true) {
                playerViewController.player?.play()
            }
        }
    }
}

Answer 4

在Swift5

func playVideo(view:UIViewController, asset:PHAsset) {

        guard (asset.mediaType == PHAssetMediaType.video)

            else {
                print("Not a valid video media type")
                return
        }

        PHCachingImageManager().requestAVAsset(forVideo: asset, options: nil) { (assets, audioMix, info) in
            let asset = assets as! AVURLAsset
            DispatchQueue.main.async {

                let player = AVPlayer(url: asset.url)
                let playerViewController = AVPlayerViewController()
                playerViewController.player = player
                view.present(playerViewController, animated: true) {
                    playerViewController.player!.play()
                }
            }
        }
    }

如何在 iOS 中播放视频 PHAsset？

How to Play Videos PHAsset in iOS?

video

nsurl

ios

swift

phasset

导入文件

来自 PHAsset

来自 AppLocalUrl