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I try to play a video from url string. But I have get some error as question title.

I try this code in below. videoPath is a url string.

let videoURL = URL(string: videoPath)

        let player = AVPlayer(url: videoURL!)

        let playerViewController = AVPlayerViewController()

        playerViewController.player = player

        self.present(playerViewController, animated: true) {

            playerViewController.player!.play()

        }

Below is error log :

load failed with error Error Domain=NSURLErrorDomain Code=-999
"cancelled" UserInfo={NSErrorFailingURLStringKey=http://b...a.mp4,
NSErrorFailingURLKey=http://b...a.mp4,
_NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask <841B2FFA-479B-4E5A-9BD3-D9207EAA0D32>.<2>" ), _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <841B2FFA-479B-4E5A-9BD3-D9207EAA0D32>.<2>,
NSLocalizedDescription=cancelled} [-999]

I set the info.plist --

<key>NSAppTransportSecurity</key>

    <dict>

        <key>NSAllowsArbitraryLoads</key>

        <true/>

        <key>NSExceptionDomains</key>

        <dict>

            <key>www.example.com</key>

            <dict>

                <key>NSExceptionAllowsInsecureHTTPLoads</key>

                <true/>

                <key>NSExceptionMinimumTLSVersion</key>

                <string>TLSv1.1</string>

                <key>NSIncludesSubdomains</key>

                <true/>

            </dict>

        </dict>

    </dict>

Are you trying to present the AVPlayerViewController inside viewDidLoad? If so you could try presenting it after the view controller's view is added to the window hierarchy - viewDidAppear for example. Keep in mind that viewDidAppear will be called when you navigate back to the controller and the modal presentation will be triggered again.

Does the URL require cookies to be set ? I faced the same issue with missing cookies.
You can check by trying to open the url in an incognito-window. If it still plays fine then perhaps you can debug this by -

Creating an AVURLAsset object with the URL eg -
AVURLAsset(url: <URL>, options:) and set the resourceLoader delegate to self.
Like urlAsset?.resourceLoader.setDelegate(self, queue: .main)
and implement the functions

func resourceLoader(_ resourceLoader: AVAssetResourceLoader, shouldWaitForLoadingOfRequestedResource loadingRequest: AVAssetResourceLoadingRequest) -> Bool {

    return true

}



func resourceLoader(_ resourceLoader: AVAssetResourceLoader, shouldWaitForRenewalOfRequestedResource renewalRequest: AVAssetResourceRenewalRequest) -> Bool {

    return true

}



func resourceLoader(_ resourceLoader: AVAssetResourceLoader, didCancel loadingRequest: AVAssetResourceLoadingRequest) {



}



func resourceLoader(_ resourceLoader: AVAssetResourceLoader, shouldWaitForResponseTo authenticationChallenge: URLAuthenticationChallenge) -> Bool {

    return true

}



func resourceLoader(_ resourceLoader: AVAssetResourceLoader, didCancel authenticationChallenge: URLAuthenticationChallenge) {



}

But if it does require cookies - Set them in the AVURLAsset object eg

let asset = AVURLAsset(url: videoURL, options: ["AVURLAssetHTTPHeaderFieldsKey": ["Cookie": "<YOUR TOKEN>"]])