fork(7) download 
  1. 		var selectedPhotosArray = [UIImage]()
  2.  
  3. 		var imageArrayToVideoURL = URL()
  4.  
  5.         imageArrayToVideoURL = NSURL(fileURLWithPath: NSHomeDirectory() + "/Documents/outputVideo.mp4")
  6.  
  7.         guard let videoWriter = try? AVAssetWriter(outputURL: imageArrayToVideoURL as URL, fileType: AVFileTypeMPEG4) else {
  8.             fatalError("AVAssetWriter error")
  9.         }
  10.         let outputSettings = [AVVideoCodecKey : AVVideoCodecH264, AVVideoWidthKey : NSNumber(value: Float(outputSize.width)), AVVideoHeightKey : NSNumber(value: Float(outputSize.height))] as [String : Any]
  11.         guard videoWriter.canApply(outputSettings: outputSettings, forMediaType: AVMediaTypeVideo) else {
  12.             fatalError("Negative : Can't apply the Output settings...")
  13.         }
  14.         let videoWriterInput = AVAssetWriterInput(mediaType: AVMediaTypeVideo, outputSettings: outputSettings)
  15.         let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
  16.         let pixelBufferAdaptor = AVAssetWriterInputPixelBufferAdaptor(assetWriterInput: videoWriterInput, sourcePixelBufferAttributes: sourcePixelBufferAttributesDictionary)
  17.         if videoWriter.canAdd(videoWriterInput) {
  18.             videoWriter.add(videoWriterInput)
  19.         }
  20.         if videoWriter.startWriting() {
  21.             let zeroTime = CMTimeMake(Int64(1),Int32(1))
  22.             videoWriter.startSession(atSourceTime: zeroTime)
  23.  
  24.             assert(pixelBufferAdaptor.pixelBufferPool != nil)
  25.             let media_queue = DispatchQueue(label: "mediaInputQueue")
  26.             videoWriterInput.requestMediaDataWhenReady(on: media_queue, using: { () -> Void in
  27.                 let fps: Int32 = 1
  28.                 let framePerSecond: Int64 = Int64(1)
  29.                 let frameDuration = CMTimeMake(framePerSecond, fps)
  30.                 var frameCount: Int64 = 0
  31.                 var appendSucceeded = true
  32.                 while (!selectedPhotosArray.isEmpty) {
  33.                     if (videoWriterInput.isReadyForMoreMediaData) {
  34.                         let nextPhoto = selectedPhotosArray.remove(at: 0)
  35.                         let lastFrameTime = CMTimeMake(frameCount * framePerSecond, fps)
  36.                         let presentationTime = frameCount == 0 ? lastFrameTime : CMTimeAdd(lastFrameTime, frameDuration)
  37.                         var pixelBuffer: CVPixelBuffer? = nil
  38.                         let status: CVReturn = CVPixelBufferPoolCreatePixelBuffer(kCFAllocatorDefault, pixelBufferAdaptor.pixelBufferPool!, &pixelBuffer)
  39.                         if let pixelBuffer = pixelBuffer, status == 0 {
  40.                             let managedPixelBuffer = pixelBuffer
  41.                             CVPixelBufferLockBaseAddress(managedPixelBuffer, CVPixelBufferLockFlags(rawValue: CVOptionFlags(0)))
  42.                             let data = CVPixelBufferGetBaseAddress(managedPixelBuffer)
  43.                             let rgbColorSpace = CGColorSpaceCreateDeviceRGB()
  44.                             let context = CGContext(data: data, width: Int(outputSize.width), height: Int(outputSize.height), bitsPerComponent: 8, bytesPerRow: CVPixelBufferGetBytesPerRow(managedPixelBuffer), space: rgbColorSpace, bitmapInfo: CGImageAlphaInfo.premultipliedFirst.rawValue)
  45.                             context!.clear(CGRect(x: 0, y: 0, width: CGFloat(outputSize.width), height: CGFloat(outputSize.height)))
  46.                             let horizontalRatio = CGFloat(outputSize.width) / nextPhoto.size.width
  47.                             let verticalRatio = CGFloat(outputSize.height) / nextPhoto.size.height
  48.                             //aspectRatio = max(horizontalRatio, verticalRatio) // ScaleAspectFill
  49.                             let aspectRatio = min(horizontalRatio, verticalRatio) // ScaleAspectFit
  50.                             let newSize: CGSize = CGSize(width: nextPhoto.size.width * aspectRatio, height: nextPhoto.size.height * aspectRatio)
  51.                             let x = newSize.width < outputSize.width ? (outputSize.width - newSize.width) / 2 : 0
  52.                             let y = newSize.height < outputSize.height ? (outputSize.height - newSize.height) / 2 : 0
  53.                             context?.draw(nextPhoto.cgImage!, in: CGRect(x: x, y: y, width: newSize.width, height: newSize.height))
  54.                             CVPixelBufferUnlockBaseAddress(managedPixelBuffer, CVPixelBufferLockFlags(rawValue: CVOptionFlags(0)))
  55.                             appendSucceeded = pixelBufferAdaptor.append(pixelBuffer, withPresentationTime: presentationTime)
  56.                         } else {
  57.                             print("Failed to allocate pixel buffer")
  58.                             appendSucceeded = false
  59.                         }
  60.                     }
  61.                     if !appendSucceeded {
  62.                         break
  63.                     }
  64.                     frameCount += 1
  65.                 }
  66.                 videoWriterInput.markAsFinished()
  67.                 videoWriter.finishWriting { () -> Void in
  68.                     print(“complete”)
  69.                 }
  70.             })
  71.         }
  72.  
  73.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.swift:1:30: error: use of unresolved identifier 'UIImage'
                var selectedPhotosArray = [UIImage]()
                                           ^~~~~~~
prog.swift:3:30: error: use of unresolved identifier 'URL'
                var imageArrayToVideoURL = URL()
                                           ^~~
prog.swift:5:32: error: use of unresolved identifier 'NSURL'
        imageArrayToVideoURL = NSURL(fileURLWithPath: NSHomeDirectory() + "/Documents/outputVideo.mp4")
                               ^~~~~
prog.swift:5:55: error: use of unresolved identifier 'NSHomeDirectory'
        imageArrayToVideoURL = NSURL(fileURLWithPath: NSHomeDirectory() + "/Documents/outputVideo.mp4")
                                                      ^~~~~~~~~~~~~~~
prog.swift:7:38: error: use of unresolved identifier 'AVAssetWriter'
        guard let videoWriter = try? AVAssetWriter(outputURL: imageArrayToVideoURL as URL, fileType: AVFileTypeMPEG4) else {
                                     ^~~~~~~~~~~~~
prog.swift:7:102: error: use of unresolved identifier 'AVFileTypeMPEG4'
        guard let videoWriter = try? AVAssetWriter(outputURL: imageArrayToVideoURL as URL, fileType: AVFileTypeMPEG4) else {
                                                                                                     ^~~~~~~~~~~~~~~
prog.swift:10:31: error: use of unresolved identifier 'AVVideoCodecKey'
        let outputSettings = [AVVideoCodecKey : AVVideoCodecH264, AVVideoWidthKey : NSNumber(value: Float(outputSize.width)), AVVideoHeightKey : NSNumber(value: Float(outputSize.height))] as [String : Any]
                              ^~~~~~~~~~~~~~~
prog.swift:10:49: error: use of unresolved identifier 'AVVideoCodecH264'
        let outputSettings = [AVVideoCodecKey : AVVideoCodecH264, AVVideoWidthKey : NSNumber(value: Float(outputSize.width)), AVVideoHeightKey : NSNumber(value: Float(outputSize.height))] as [String : Any]
                                                ^~~~~~~~~~~~~~~~
prog.swift:10:67: error: use of unresolved identifier 'AVVideoWidthKey'
        let outputSettings = [AVVideoCodecKey : AVVideoCodecH264, AVVideoWidthKey : NSNumber(value: Float(outputSize.width)), AVVideoHeightKey : NSNumber(value: Float(outputSize.height))] as [String : Any]
                                                                  ^~~~~~~~~~~~~~~
prog.swift:10:85: error: use of unresolved identifier 'NSNumber'
        let outputSettings = [AVVideoCodecKey : AVVideoCodecH264, AVVideoWidthKey : NSNumber(value: Float(outputSize.width)), AVVideoHeightKey : NSNumber(value: Float(outputSize.height))] as [String : Any]
                                                                                    ^~~~~~~~
prog.swift:10:107: error: use of unresolved identifier 'outputSize'
        let outputSettings = [AVVideoCodecKey : AVVideoCodecH264, AVVideoWidthKey : NSNumber(value: Float(outputSize.width)), AVVideoHeightKey : NSNumber(value: Float(outputSize.height))] as [String : Any]
                                                                                                          ^~~~~~~~~~
prog.swift:10:127: error: use of unresolved identifier 'AVVideoHeightKey'
        let outputSettings = [AVVideoCodecKey : AVVideoCodecH264, AVVideoWidthKey : NSNumber(value: Float(outputSize.width)), AVVideoHeightKey : NSNumber(value: Float(outputSize.height))] as [String : Any]
                                                                                                                              ^~~~~~~~~~~~~~~~
prog.swift:10:146: error: use of unresolved identifier 'NSNumber'
        let outputSettings = [AVVideoCodecKey : AVVideoCodecH264, AVVideoWidthKey : NSNumber(value: Float(outputSize.width)), AVVideoHeightKey : NSNumber(value: Float(outputSize.height))] as [String : Any]
                                                                                                                                                 ^~~~~~~~
prog.swift:10:168: error: use of unresolved identifier 'outputSize'
        let outputSettings = [AVVideoCodecKey : AVVideoCodecH264, AVVideoWidthKey : NSNumber(value: Float(outputSize.width)), AVVideoHeightKey : NSNumber(value: Float(outputSize.height))] as [String : Any]
                                                                                                                                                                       ^~~~~~~~~~
prog.swift:11:82: error: use of unresolved identifier 'AVMediaTypeVideo'
        guard videoWriter.canApply(outputSettings: outputSettings, forMediaType: AVMediaTypeVideo) else {
                                                                                 ^~~~~~~~~~~~~~~~
prog.swift:14:32: error: use of unresolved identifier 'AVAssetWriterInput'
        let videoWriterInput = AVAssetWriterInput(mediaType: AVMediaTypeVideo, outputSettings: outputSettings)
                               ^~~~~~~~~~~~~~~~~~
prog.swift:14:62: error: use of unresolved identifier 'AVMediaTypeVideo'
        let videoWriterInput = AVAssetWriterInput(mediaType: AVMediaTypeVideo, outputSettings: outputSettings)
                                                             ^~~~~~~~~~~~~~~~
prog.swift:15:54: error: use of unresolved identifier 'kCVPixelBufferPixelFormatTypeKey'
        let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
                                                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.swift:15:99: error: use of unresolved identifier 'NSNumber'
        let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
                                                                                                  ^~~~~~~~
prog.swift:15:115: error: use of unresolved identifier 'kCVPixelFormatType_32ARGB'
        let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
                                                                                                                  ^~~~~~~~~~~~~~~~~~~~~~~~~
prog.swift:15:143: error: use of unresolved identifier 'kCVPixelBufferWidthKey'
        let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
                                                                                                                                              ^~~~~~~~~~~~~~~~~~~~~~
prog.swift:15:177: error: use of unresolved identifier 'NSNumber'
        let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
                                                                                                                                                                                ^~~~~~~~
prog.swift:15:199: error: use of unresolved identifier 'outputSize'
        let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
                                                                                                                                                                                                      ^~~~~~~~~~
prog.swift:15:219: error: use of unresolved identifier 'kCVPixelBufferHeightKey'
        let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
                                                                                                                                                                                                                          ^~~~~~~~~~~~~~~~~~~~~~~
prog.swift:15:254: error: use of unresolved identifier 'NSNumber'
        let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
                                                                                                                                                                                                                                                             ^~~~~~~~
prog.swift:15:276: error: use of unresolved identifier 'outputSize'
        let sourcePixelBufferAttributesDictionary = [kCVPixelBufferPixelFormatTypeKey as String : NSNumber(value: kCVPixelFormatType_32ARGB), kCVPixelBufferWidthKey as String: NSNumber(value: Float(outputSize.width)), kCVPixelBufferHeightKey as String: NSNumber(value: Float(outputSize.height))]
                                                                                                                                                                                                                                                                                   ^~~~~~~~~~
prog.swift:16:34: error: use of unresolved identifier 'AVAssetWriterInputPixelBufferAdaptor'
        let pixelBufferAdaptor = AVAssetWriterInputPixelBufferAdaptor(assetWriterInput: videoWriterInput, sourcePixelBufferAttributes: sourcePixelBufferAttributesDictionary)
                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prog.swift:68:38: error: unicode curly quote found, replace with '"'
                    print(“complete”)
prog.swift:68:27: error: unicode curly quote found, replace with '"'
                    print(“complete”)
prog.swift:21:28: error: use of unresolved identifier 'CMTimeMake'
            let zeroTime = CMTimeMake(Int64(1),Int32(1))
                           ^~~~~~~~~~
prog.swift:25:31: error: use of unresolved identifier 'DispatchQueue'
            let media_queue = DispatchQueue(label: "mediaInputQueue")
                              ^~~~~~~~~~~~~
<unknown>:0: error: error opening input file 'prog.o' (No such file or directory
)
clang: error: no such file or directory: 'prog.o'
clang: error: no such file or directory: '@prog.autolink'
stdout 
Standard output is empty
https://ideone.com/6OSP9Y
language:
Swift (swift 4.2.2)
created:
7 years ago
visibility:
public

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