Video not rotating using AVMutableVideoCompositionLayerInstruction

Question

I\'m trying to merge two videos I get after recording using the camera as a UIImagePickerController. I\'ve succeeded with combining the videos into one but I have some problems

Answer 1

You can just use this simple code,It works for me:

  var assetVideoTrack = (sourceAsset.tracksWithMediaType(AVMediaTypeVideo)).last as! AVAssetTrack

  var compositionVideoTrack = (composition.tracksWithMediaType(AVMediaTypeVideo)).last as! AVMutableCompositionTrack

  if (assetVideoTrack.playable && compositionVideoTrack.playable) {

       compositionVideoTrack.preferredTransform = assetVideoTrack.preferredTransform
   }