CODEWITHSUNDEEP
iosswiftmacosavfoundationavkit
Eric Walier
Eric Walier

Reputation: 331

AVPlayerLooper not looping my local video

I'm trying to get a video to play in my macOS project and I want it to continuously loop. I was able to get it to play once but I can't figure out how to get it to loop. I'm using the AVPlayerLooper but seem to be messing up somewhere. Here is my code:

import Cocoa
import AVKit
import AVFoundation

class ViewController: NSViewController {

    @IBOutlet weak var videoPlayer: AVPlayerView!

    override func viewDidLoad() {
        //var loop: AVPlayerLooper?

        super.viewDidLoad()

        guard let path = Bundle.main.path(forResource: "Background", ofType:"mp4") else {
            debugPrint("Not found")
            return
        }

        let asset = AVAsset(url: URL(fileURLWithPath: path))
        let item = AVPlayerItem(asset: asset)
        let queuePlayer = AVQueuePlayer(playerItem: item)
        let loop = AVPlayerLooper(player: queuePlayer, templateItem: item)
        videoPlayer.player = queuePlayer
        videoPlayer.player?.play()
    }
}

I also have an AVPlayerView in my storyboard that I have connected to my viewcontroller.

It builds and runs fine but when I run it nothing shows up. I just get a black screen.

Any help is appreciated. Thanks!

Upvotes: 1

Views: 1468

Answers (3)

0101
0101

Reputation: 2712

Try assigning the AVPlayerLooper to the class member instance. Since it is not used it very likely gets deallocated right away and so no looping happens.

self.loop = AVPlayerLooper(player: queuePlayer, templateItem: item)

Upvotes: 0

Will Loew-Blosser
Will Loew-Blosser

Reputation: 278

A bit late on the response here. There is better guidance now since your 2018 question. Take a close look at the sample code in the WWDC22 "Display HDR video in EDR with AVFoundation and Metal". https://developer.apple.com/wwdc22/110565

The WWDC session is quite packed.. For me it needed multiple replays to really take in the guidance.

I have found that the AVPlayerLoop needs to add the videoColorProperties and the outPutSettings in a AVPlayerItemVideoOutPut object to each member of the repeatingItems in the AVPlayerLoop. This is implied in the documentation for AVPlayerItemVideoOutPut

I don't see anything in your code sample that is listening for the

hasNewPixelBuffer(forItemTime: currentTime)

When there is a new buffer frame then copy the pixelBuffer as shown in the sample code from the WWDC session. A missing frame update could explain your black screen.

copyPixelBuffer(forItemTime: currentTime,
               itemTimeForDisplay: nil)

Upvotes: 0

NoHalfBits
NoHalfBits

Reputation: 622

  • AVPlayerLoop is sort of a "top level" object that manages both the player and the player item. So you have to keep it around, e.g. in a custom property of the view controller, or it will be released before it can really do anything

  • Since AVPlayerLoop manages the items in the AVQueuePlayer, initialize the queue player without passing in the player item

Upvotes: 6

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