Video Trimming failed with block AVAssetExportSessionStatus.Failed - iphone

Question

I have converted this code to Swift language but i am getting this
Error: Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo=0x174278600 {NSUnderlyingError=0x170241d10 "The operation couldn’t be completed. (OSStatus error -12780.)", NSLocalizedFailureReason=An unknown error occurred (-12780), NSLocalizedDescription=The operation could not be completed} in (case AVAssetExportSessionStatus.Failed).
Kindly help me to resolved this
func cropVideo(sourceURL: NSURL)
{
let asset = AVURLAsset(URL: sourceURL, options: nil)
let exportSession = AVAssetExportSession(asset: asset, presetName: AVAssetExportPresetHighestQuality)
var error : NSError?
let file = "Finaloutput.mp4"
/* let paths : AnyObject = NSSearchPathForDirectoriesInDomains(.DocumentDirectory,.UserDomainMask,true)[0]
let outputURL1 = paths[0] as? String*/
let nsDocumentDirectory = NSSearchPathDirectory.DocumentDirectory
let nsUserDomainMask = NSSearchPathDomainMask.UserDomainMask
let paths = NSSearchPathForDirectoriesInDomains(nsDocumentDirectory, nsUserDomainMask, true)
let outputURL1 = paths[0] as? String
let filemgr = NSFileManager.defaultManager()
filemgr.createDirectoryAtPath(outputURL1!, withIntermediateDirectories: true, attributes: nil, error: &error)
var outputURL = outputURL1!.stringByAppendingPathComponent(file)
filemgr.removeItemAtPath(outputURL, error: &error)
let FinalUrlTosave = NSURL(string: outputURL)
exportSession.outputURL=FinalUrlTosave
exportSession.shouldOptimizeForNetworkUse = true
// exportSession.outputFileType = AVFileTypeQuickTimeMovie
exportSession.outputFileType = AVFileTypeQuickTimeMovie;
let start:CMTime
let duration:CMTime
start = CMTimeMakeWithSeconds(1.0, 600)
duration = CMTimeMakeWithSeconds(19.0, 600)
// let timeRangeForCurrentSlice = CMTimeRangeMake(start, duration)
let range = CMTimeRangeMake(start, duration);
exportSession.timeRange = range
let destinationURL1 = NSURL(string: outputURL)
exportSession.exportAsynchronouslyWithCompletionHandler({
switch exportSession.status{
case AVAssetExportSessionStatus.Failed:
println("failed \(exportSession.error)")
case AVAssetExportSessionStatus.Cancelled:
println("cancelled \(exportSession.error)")
default:
println("complete....complete")
self.SaveVideoToPhotoLibrary(destinationURL1!)
}
})
}
func SaveVideoToPhotoLibrary(outputFileURL: NSURL)
{
assetsLibrary = ALAssetsLibrary()
let videoURL = outputFileURL as NSURL?
if let library = assetsLibrary{
if let url = videoURL{
library.writeVideoAtPathToSavedPhotosAlbum(url,
completionBlock: {(url: NSURL!, error: NSError!) in
print(url)
if let theError = error{
print("Error happened while saving the video")
print("The error is = \(theError)")
} else {
print("no errors happened")
}
})
} else {
print("Could not find the video in the app bundle")
}
}
}

Answer 1

Found Solution :
I have change this line and it works for me
let FinalUrlTosave = NSURL(fileURLWithPath: outputURL)
instead of
let FinalUrlTosave = NSURL(string: outputURL)
I was not getting exact path.