Error Domain=NSOSStatusErrorDomain Code=-12780 \"(null)\" - swift

Question

When I try to export the asset with AVAssetExport I get the following error only on videos received through whatsapp probably.
I could not find a working solution. I've also tried implementing code to fix video duration, but I did not fix it.
Error is:
Error Domain=NSOSStatusErrorDomain Code=-12780 \"(null)\"
Here code
PHCachingImageManager().requestAVAsset(forVideo: asset.phAsset!, options: nil, resultHandler: { (AVAssetRecivied, audioMix, info) in
let AVAssetMy = AVAssetRecivied!.normalizingMediaDuration()
let exportSession : AVAssetExportSession?
if (AVAssetMy as? AVURLAsset) != nil {
exportSession = AVAssetExportSession(asset: (AVAssetMy as? AVURLAsset)!, presetName: AVAssetExportPresetMediumQuality)
}
else {
exportSession = AVAssetExportSession(asset: (AVAssetMy as? AVComposition)!, presetName: AVAssetExportPresetMediumQuality)
}
exportSession?.outputURL = URL(fileURLWithPath: NSTemporaryDirectory() + NSUUID().uuidString + ".m4v")
exportSession?.outputFileType = AVFileTypeQuickTimeMovie
exportSession?.audioMix = audioMix
exportSession?.shouldOptimizeForNetworkUse = true
exportSession?.exportAsynchronously { () -> Void in
if exportSession?.status == .completed {
self.getFileSize(url: exportSession!.outputURL!)
if self.myMediaArray == nil {
self.myMediaArray = [["Video" : AVAsset(url: exportSession!.outputURL!)]]
DispatchQueue.main.async {
self.collectionViewImage.reloadData()
}
} else {
self.myMediaArray?.append(["Video" : AVAsset(url: exportSession!.outputURL!)])
DispatchQueue.main.async {
self.collectionViewImage.reloadData()
}
}}
}
})
Here is the method for adjusting the duration of the video
func normalizingMediaDuration() -> AVAsset? {
let mixComposition : AVMutableComposition = AVMutableComposition()
var mutableCompositionVideoTrack : [AVMutableCompositionTrack] = []
var mutableCompositionAudioTrack : [AVMutableCompositionTrack] = []
let totalVideoCompositionInstruction : AVMutableVideoCompositionInstruction = AVMutableVideoCompositionInstruction()
guard let video = tracks(withMediaType: AVMediaTypeVideo).first else {
return nil
}
guard let audio = tracks(withMediaType: AVMediaTypeAudio).first else {
return nil
}
mutableCompositionVideoTrack.append(mixComposition.addMutableTrack(withMediaType: AVMediaTypeVideo, preferredTrackID: kCMPersistentTrackID_Invalid))
mutableCompositionAudioTrack.append(mixComposition.addMutableTrack(withMediaType: AVMediaTypeAudio, preferredTrackID: kCMPersistentTrackID_Invalid))
let duration = video.timeRange.duration.seconds > audio.timeRange.duration.seconds ? audio.timeRange.duration : video.timeRange.duration
do{
try mutableCompositionVideoTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero,duration), of: video, at: kCMTimeZero)
try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, duration), of: audio, at: kCMTimeZero)
}catch{
return nil
}
totalVideoCompositionInstruction.timeRange = CMTimeRangeMake(kCMTimeZero,duration)
return mixComposition
}
}
The file is:
1) Exportable
2) Presets and format are compatible
3) I tried to move the file to the document's before I export 4) I tried to change the file extension.

Answer 1

It’s a bug.
Bug report : https://bugreport.apple.com/web/?problemID=34574848
Alternatives are welcome...

Answer 2

I ran into the same problem, and got the same error code -12780.
The only thing that fixed it for me was:
sending to exportSession?.outputURL a NSURL variable and putting as URL
I have no idea why it worked and I hope you'll find it helpful as well.