iOS: AVPlayer - getting a snapshot of the current frame of a video

Question

I have spent the whole day and went through a lot of SO answers, Apple references, documentations, etc, but no success.

I want a simple thing: I am playing a

Answer 1

AVAssetImageGenerator is the best way to snapshot a video, this method return asynchronously a UIImage :

import AVFoundation

// ...

var player:AVPlayer? = // ...

func screenshot(handler:@escaping ((UIImage)->Void)) {
    guard let player = player ,
        let asset = player.currentItem?.asset else {
            return
    }

    let imageGenerator = AVAssetImageGenerator(asset: asset)
    imageGenerator.appliesPreferredTrackTransform = true
    let times = [NSValue(time:player.currentTime())]

    imageGenerator.generateCGImagesAsynchronously(forTimes: times) { _, image, _, _, _ in
        if image != nil {
            handler(UIImage(cgImage: image!))
        }
    }
}

(It's Swift 4.2)