iOS - How to get thumbnail from video without play?

Question

I\'m trying to get thumbnail from video and show it in my tableview. Here is my code:

- (UIImage *)imageFromVideoURL:(NSURL *)contentURL {
    AVAsset *asse         


        

Answer 1

SWIFT 5.2 VERSION:

You can find my original post here, where I took inspiration from rozochkin's answer.

func getCurrentFrame() -> UIImage? {
    guard let player = self.player, let avPlayerAsset = player.currentItem?.asset else {return nil}
    let assetImageGenerator = AVAssetImageGenerator(asset: avPlayerAsset)
    assetImageGenerator.requestedTimeToleranceAfter = .zero
    assetImageGenerator.requestedTimeToleranceBefore = .zero
    assetImageGenerator.appliesPreferredTrackTransform = true
    let imageRef = try! assetImageGenerator.copyCGImage(at: player.currentTime(), actualTime: nil)
    let image = UIImage(cgImage: imageRef)
    return image
}

IMPORTANT NOTES:

requestedTimeToleranceAfter and requestedTimeToleranceBefore should be set to .zero, because, according to source code, "The actual time of the generated images [...] may differ from the requested time for efficiency".

appliesPreferredTrackTransform must be set to TRUE (default is FALSE), otherwise you get a bad-rotated frame. With this property set to TRUE you get what you really see in the player.

Answer 2

func getThumbnailFrom(path: URL) -> UIImage? {

        do {
            let asset = AVURLAsset(url: path , options: nil)
            let imgGenerator = AVAssetImageGenerator(asset: asset)
            imgGenerator.appliesPreferredTrackTransform = true
            let timestamp = asset.duration
            print("Timestemp:   \(timestamp)")
            let cgImage = try imgGenerator.copyCGImage(at: timestamp, actualTime: nil)
            let thumbnail = UIImage(cgImage: cgImage)
            return thumbnail
            } catch let error {
            print("*** Error generating thumbnail: \(error.localizedDescription)")
            return nil
          }
        }

This Code is working.