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Merge pull request #221 from Yummypets/RecordingSquareVideos
Recording square videos
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@@ -16,4 +16,5 @@ struct YPLoaders { | |
| spinner.startAnimating() | ||
| return UIBarButtonItem(customView: spinner) | ||
| } | ||
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| } | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,104 @@ | ||
| // | ||
| // YPVideoProcessor.swift | ||
| // YPImagePicker | ||
| // | ||
| // Created by Nik Kov on 13.09.2018. | ||
| // Copyright © 2018 Yummypets. All rights reserved. | ||
| // | ||
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| import UIKit | ||
| import AVFoundation | ||
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| /* | ||
| This class contains all support and helper methods to process the videos | ||
| */ | ||
| class YPVideoProcessor { | ||
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| /// Creates an output path and removes the file in temp folder if existing | ||
| /// | ||
| /// - Parameters: | ||
| /// - temporaryFolder: Save to the temporary folder or somewhere else like documents folder | ||
| /// - suffix: the file name wothout extension | ||
| static func makeVideoPathURL(temporaryFolder: Bool, fileName: String) -> URL { | ||
| var outputURL: URL | ||
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| if temporaryFolder { | ||
| let outputPath = "\(NSTemporaryDirectory())\(fileName).\(YPConfig.video.fileType.fileExtension)" | ||
| outputURL = URL(fileURLWithPath: outputPath) | ||
| } else { | ||
| guard let documentsURL = FileManager | ||
| .default | ||
| .urls(for: .documentDirectory, | ||
| in: .userDomainMask).first else { | ||
| print("YPVideoProcessor -> Can't get the documents directory URL") | ||
| return URL(fileURLWithPath: "Error") | ||
| } | ||
| outputURL = documentsURL.appendingPathComponent("\(fileName).\(YPConfig.video.fileType.fileExtension)") | ||
| } | ||
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| let fileManager = FileManager.default | ||
| if fileManager.fileExists(atPath: outputURL.path) { | ||
| do { | ||
| try fileManager.removeItem(atPath: outputURL.path) | ||
| } catch { | ||
| print("YPVideoProcessor -> Can't remove the file for some reason.") | ||
| } | ||
| } | ||
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| return outputURL | ||
| } | ||
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| /* | ||
| Crops the video to square by video height from the top of the video. | ||
| */ | ||
| static func cropToSquare(filePath: URL, completion: @escaping (_ outputURL : URL?) -> ()) { | ||
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| // output file | ||
| let outputPath = makeVideoPathURL(temporaryFolder: true, fileName: "squaredVideoFromCamera") | ||
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| // input file | ||
| let asset = AVAsset.init(url: filePath) | ||
| let composition = AVMutableComposition.init() | ||
| composition.addMutableTrack(withMediaType: .video, preferredTrackID: kCMPersistentTrackID_Invalid) | ||
|
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| // input clip | ||
| let clipVideoTrack = asset.tracks(withMediaType: .video)[0] | ||
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| // make it square | ||
| let videoComposition = AVMutableVideoComposition() | ||
| videoComposition.renderSize = CGSize(width: CGFloat(clipVideoTrack.naturalSize.height), height: CGFloat(clipVideoTrack.naturalSize.height)) | ||
| videoComposition.frameDuration = CMTimeMake(1, 30) | ||
| let instruction = AVMutableVideoCompositionInstruction() | ||
| instruction.timeRange = CMTimeRangeMake(kCMTimeZero, CMTimeMakeWithSeconds(60, 30)) | ||
|
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| // rotate to potrait | ||
| let transformer = AVMutableVideoCompositionLayerInstruction(assetTrack: clipVideoTrack) | ||
| let t1 = CGAffineTransform(translationX: clipVideoTrack.naturalSize.height, y: -(clipVideoTrack.naturalSize.width - clipVideoTrack.naturalSize.height) / 2) | ||
| let t2: CGAffineTransform = t1.rotated(by: .pi/2) | ||
| let finalTransform: CGAffineTransform = t2 | ||
| transformer.setTransform(finalTransform, at: kCMTimeZero) | ||
| instruction.layerInstructions = [transformer] | ||
| videoComposition.instructions = [instruction] | ||
|
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| // exporter | ||
| let exporter = AVAssetExportSession.init(asset: asset, presetName: AVAssetExportPresetMediumQuality) | ||
| exporter?.videoComposition = videoComposition | ||
| exporter?.outputURL = outputPath | ||
| exporter?.shouldOptimizeForNetworkUse = true | ||
| exporter?.outputFileType = YPConfig.video.fileType | ||
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| exporter?.exportAsynchronously { | ||
| if exporter?.status == .completed { | ||
| DispatchQueue.main.async(execute: { | ||
| completion(outputPath) | ||
| }) | ||
| return | ||
| } else if exporter?.status == .failed { | ||
| print("YPVideoProcessor -> Export of the video failed. Reason: \(String(describing: exporter?.error))") | ||
| } | ||
| completion(nil) | ||
| return | ||
| } | ||
| } | ||
|
|
||
| } |
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