Question

当我下载.mp4或.mov播放器时，它将毫无错误地保存到设备库中，但是当我尝试保存.m3u8视频文件时，它将始终在错误本地描述中显示此错误：

“可选（错误域= NSCocoaErrorDomain代码= -1 \”（空）\“）”

有人可以从我出问题的地方帮助我吗？

 func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask,
                didFinishDownloadingTo location: URL) {
    // 1
    guard let sourceURL = downloadTask.originalRequest?.url else { return }
    let download = DownloadManager.sharedDownloadManager.activeDownloads[sourceURL]
    DownloadManager.sharedDownloadManager.activeDownloads[sourceURL] = nil
    // 2
    let destinationURL = localFilePath(for: sourceURL)
    print(destinationURL)

    PHPhotoLibrary.shared().performChanges({
        PHAssetChangeRequest.creationRequestForAssetFromVideo(atFileURL: destinationURL)
    }) { saved, error in
        if saved {
            print("Video saved")
           download?.track.downloaded = true
        }else{
            print("Video not saved")
            download?.track.downloaded = false
        }
    }
}

Answer 1

下载视频时，会将视频保存到临时路径。下载完成后，将视频从临时路径移动到您的应用目录。 check Here

它已使用此代码下载了视频，对我来说效果很好

您只需要在函数中传递视频链接。我已经使用日期格式化程序来命名从服务器下载的视频。因为下载第一个视频后，如果您不使用任何命名约定，您的旧视频将被替换。

func downloadVideoLinkAndCreateAsset(_ videoLink: String) {
    DispatchQueue.main.async {
        self.view.makeToast("Downloading Video", duration: 0.8, position: .center)
    }

    guard let videoURL = URL(string: videoLink) else { return }
    guard let documentsDirectoryURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first else { return }

    URLSession.shared.downloadTask(with: videoURL) { (location, response, error) -> Void in
        guard let location = location else { return }
        let date = Date()
        let dateFormatter = DateFormatter()
        dateFormatter.dateFormat = "HH:mm:ss"
        dateFormatter.timeZone = TimeZone(identifier: "GMT")
        let destinationURL = documentsDirectoryURL.appendingPathComponent("\(dateFormatter.string(from: date)).mp4")
        do {
            try FileManager.default.moveItem(at: location, to: destinationURL)
            PHPhotoLibrary.shared().performChanges({
                PHAssetChangeRequest.creationRequestForAssetFromVideo(atFileURL: destinationURL)}) { completed, error in
                    if completed {
                        //Downloaded
                    } else if let error = error {
                        //Error
                    }
            }
        } catch {
            print(error.localizedDescription)
        }
        }.resume()
}

目标URL是您的项目目录的URL

将流视频（m3u8文件）保存到图库中

1 个答案: