CODEWITHSUNDEEP
iosswiftavplayer
Oleg Gordiichuk
Oleg Gordiichuk

Reputation: 15512

How to generate thumbnail from video stream?

I am wondering how I can get UIImage from video stream?

What I have done :

First I run stream:

let player = AVPlayer(url: sourceURL)
player.play()

Then I check if asset from AVPlayer is not empty.

if let asset = player.currentItem?.asset {
   let imageGenerator = AVAssetImageGenerator(asset: asset)
   imageGenerator.requestedTimeToleranceBefore = CMTimeMake(1, 15)
   imageGenerator.requestedTimeToleranceAfter = CMTimeMake(1, 15)
   let time = CMTimeMake(1, 1)
   let imageRef = try! imageGenerator.copyCGImage(at: time, actualTime: nil)
   return UIImage(cgImage:imageRef)
}

I am using try! for test purposes and I know that I am not handling exceptions.

But I receive error:

Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo={NSUnderlyingError=0x170654250 {Error Domain=NSOSStatusErrorDomain Code=-12782 "(null)"}, NSLocalizedFailureReason=An unknown error occurred (-12782), NSLocalizedDescription=The operation could not be completed}

Also I try this answers.

Upvotes: 2

Views: 838

Answers (1)

Nebojsa Nadj
Nebojsa Nadj

Reputation: 631

I'm pretty sure if you remove the requestedTimeToleranceBefore and requestedTimeToleranceAfter you will have no problems. Or change their property to kCMTimeZero I would also suggest adding the following line

imageGenerator.appliesPreferredTrackTransform = true

Upvotes: 0

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