How to generate thumbnail from Video url?

Question

As mentioned in this answer, I am using below code to generate thumbnail from Video URL:

//MARK: - - Generate Thumbnail
func getThumbnailFrom(path: URL) -> UIImage? {

    do {

        let asset = AVURLAsset(url: path, options: nil)

        let imgGenerator = AVAssetImageGenerator(asset: asset)
        imgGenerator.appliesPreferredTrackTransform = true

        let cgImage = try imgGenerator.copyCGImage(at: CMTimeMake(0, 1), actualTime: nil)
        let uiImage = UIImage.init(cgImage: cgImage)

        return uiImage


    } catch let error as NSError {

        print("Error generating thumbnail: \(error.localizedDescription)")
        return nil
    }
}

but it is throwing an error:

Error generating thumbnail: The operation could not be completed

Your code is perfectly working in my case. Check your URL and video file which is in file manager. Is video actually there or not? — Jay Patel, Jan 04 '18 at 12:51
@SandipGill, url to the video page or to the video file? Can you show us this url? — user28434'mstep, Jan 04 '18 at 12:54
This is my url i am getting it from my directory. file:///var/mobile/Containers/Data/Application/007D2DC0-99F5-4C13-90D6-B58E8BB61E14/Documents/video.mp4 — Sandip Gill, Jan 04 '18 at 13:10

score 0 · Answer 1 · answered Jan 04 '18 at 16:39

Use below code for generating thumb image from video url.

DispatchQueue.global().async {
    let asset = AVAsset(url: "**your url of video**")
    let assetImgGenerate : AVAssetImageGenerator = AVAssetImageGenerator(asset: asset)
     assetImgGenerate.appliesPreferredTrackTransform = true
    let time = CMTimeMake(1, 2)
    let img = try? assetImgGenerate.copyCGImage(at: time, actualTime: nil)
    if img != nil {
    let frameImg  = UIImage(cgImage: img!)
                    DispatchQueue.main.async(execute: {
    // assign your image to UIImageView
                    })
            }
    }

score -1 · Answer 2 · answered Jan 04 '18 at 13:07

Hey I have also used same logic for thumbnail of video.

        do {
            let videoUrl = "Url"

            let asset = AVURLAsset(url: videoUrl, options: nil)
            let imgGenerator = AVAssetImageGenerator(asset: asset)

            let cgImage = try imgGenerator.copyCGImage(at: CMTimeMake(0, 1), actualTime: nil)

            // Rotate image before proceeding
            let uiImage = UIImage(cgImage: cgImage, scale: CGFloat(1.0), orientation: .right)

            image = uiImage

        } catch let error as NSError {

            print("Error occurred: \(error)")
        }

It works for me. After getting CGImage image orientation was not proper so made orientation proper. See if it works for you.

file:///var/mobile/Containers/Data/Application/007D2DC0-99F5-4C13-90D6-B58E8BB61E14/Documents/video.mp4 this is my file url — Sandip Gill, Jan 04 '18 at 13:11

How to generate thumbnail from Video url?

2 Answers2