Created
May 17, 2016 21:50
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this is the inspiration original gist https://github.com/jai/VideoMerge
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| // | |
| // VideoMerge.swift | |
| // David Alejandro | |
| // | |
| // Created by David Alejandro on 5/12/16. | |
| // Copyright © 2016 David Alejandro. All rights reserved. | |
| // | |
| // inpired by https://github.com/jai/VideoMerge | |
| import AVFoundation | |
| import AssetsLibrary | |
| class Video: Equatable { | |
| var assetURL: NSURL | |
| init(url: NSURL) { | |
| self.assetURL = url | |
| } | |
| } | |
| func == (left: Video, right: Video) -> Bool { | |
| return left.assetURL == left.assetURL | |
| } | |
| private extension Selector { | |
| static let updateProgress = #selector(VideoMerge.updateProgress) | |
| } | |
| class VideoMerge: NSObject { | |
| private var timerProgress: NSTimer? | |
| var progressCallback: ((Float) -> ())? | |
| var exporter: AVAssetExportSession? | |
| func merge(sourceVideos: [Video], completition: (video: Video)->()) throws { | |
| let composition = AVMutableComposition() | |
| let track = composition.addMutableTrackWithMediaType(AVMediaTypeVideo, preferredTrackID:Int32(kCMPersistentTrackID_Invalid)) | |
| for (index, currentVideoObject) in sourceVideos.enumerate() { | |
| let videoAsset = AVAsset(URL: currentVideoObject.assetURL) | |
| let time: CMTime | |
| if index == 0 { | |
| time = kCMTimeZero | |
| } else { | |
| time = composition.duration | |
| } | |
| try track.insertTimeRange(CMTimeRangeMake(kCMTimeZero, videoAsset.duration), ofTrack: videoAsset.tracksWithMediaType(AVMediaTypeVideo)[0] , atTime: time) | |
| } | |
| let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true) | |
| let documentsDirectory = NSURL(string: paths[0])! | |
| let videoPathToSave = documentsDirectory.URLByAppendingPathComponent("mergeVideo-\(arc4random()%1000)-d.mp4") | |
| let videoURLToSave = videoPathToSave | |
| guard let exporter = AVAssetExportSession(asset: composition, presetName: AVAssetExportPresetMediumQuality) else { return } | |
| self.exporter = exporter | |
| exporter.outputURL = videoURLToSave | |
| exporter.outputFileType = AVFileTypeMPEG4 | |
| exporter.shouldOptimizeForNetworkUse = true | |
| exporter.exportAsynchronouslyWithCompletionHandler({self.timerProgress?.invalidate() | |
| self.timerProgress = nil | |
| self.progressCallback = nil | |
| switch exporter.status { | |
| case .Completed: | |
| let video = Video(url: videoURLToSave) | |
| completition(video: video) | |
| case .Failed: | |
| print("failed \(exporter.error)") | |
| case .Cancelled: | |
| print("cancelled \(exporter.error)") | |
| default: | |
| print("complete") | |
| } | |
| }) | |
| timerProgress = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: .updateProgress, userInfo: nil, repeats: true) | |
| } | |
| func updateProgress() { | |
| if let exporter = exporter { | |
| progressCallback?(exporter.progress) | |
| } | |
| } | |
| } |
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func == (left: Video, right: Video) -> Boolshould comparelefttoright, notlefttoleft.