Video thumbnail

iOSVideoFrameGrab.swift

import UIKit
import XCPlayground
import AVFoundation

func generateThumnail(url : NSURL, fromTime:Float64) -> UIImage {
    var asset :AVAsset = AVAsset.assetWithURL(url) as! AVAsset
    var assetImgGenerate : AVAssetImageGenerator = AVAssetImageGenerator(asset: asset)
    assetImgGenerate.appliesPreferredTrackTransform = true
    var error       : NSError? = nil
    var time        : CMTime = CMTimeMakeWithSeconds(fromTime, 600)
    var img         : CGImageRef = assetImgGenerate.copyCGImageAtTime(time, actualTime: nil, error: &error)
    var frameImg    : UIImage = UIImage(CGImage: img)!
    return frameImg
}

var grabTime = 1.70

if let myFilePath = NSBundle.mainBundle().URLForResource("vid", withExtension: "m4v") {
    let img = generateThumnail(myFilePath, Float64(grabTime))
    let v = UIImageView(frame: CGRectMake(0, 0, 960, 540))
    v.image = img
    XCPShowView("cap", v)
}