我试着在Swift中连接.wav音频文件。
这是我的代码:
在终端上(在 iPhone 上运行)收到此错误:
file:///var/mobile/Containers/Data/Application/3F49D360-B363-4600-B3BB-EE0810501910/Documents/resultmerge.wav
成功
失败,错误域名为 AVFoundationErrorDomain,代码为 -11838,“操作已中止”,用户信息为 0x174269ac0 {NSLocalizedDescription=Opération interrompue, NSLocalizedFailureReason=L’opération n’est pas prise en charge pour ce contenu multimédia.}
但我不知道为什么会出现这个错误。非常感谢您能给我任何帮助 :)
这是我的代码:
func merge(audio1: NSURL, audio2: NSURL) {
var error:NSError?
var ok1 = false
var ok2 = false
var documentsDirectory:String = paths[0] as! String
//Create AVMutableComposition Object.This object will hold our multiple AVMutableCompositionTrack.
var composition = AVMutableComposition()
var compositionAudioTrack1:AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeAudio, preferredTrackID: CMPersistentTrackID())
var compositionAudioTrack2:AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeAudio, preferredTrackID: CMPersistentTrackID())
//create new file to receive data
var documentDirectoryURL = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first! as! NSURL
var fileDestinationUrl = documentDirectoryURL.URLByAppendingPathComponent("resultmerge.wav")
println(fileDestinationUrl)
var url1 = audio1
var url2 = audio2
var avAsset1 = AVURLAsset(URL: url1, options: nil)
var avAsset2 = AVURLAsset(URL: url2, options: nil)
var tracks1 = avAsset1.tracksWithMediaType(AVMediaTypeAudio)
var tracks2 = avAsset2.tracksWithMediaType(AVMediaTypeAudio)
var assetTrack1:AVAssetTrack = tracks1[0] as! AVAssetTrack
var assetTrack2:AVAssetTrack = tracks2[0] as! AVAssetTrack
var duration1: CMTime = assetTrack1.timeRange.duration
var duration2: CMTime = assetTrack2.timeRange.duration
var timeRange1 = CMTimeRangeMake(kCMTimeZero, duration1)
var timeRange2 = CMTimeRangeMake(duration1, duration2)
ok1 = compositionAudioTrack1.insertTimeRange(timeRange1, ofTrack: assetTrack1, atTime: kCMTimeZero, error: nil)
if ok1 {
ok2 = compositionAudioTrack2.insertTimeRange(timeRange2, ofTrack: assetTrack2, atTime: duration1, error: nil)
if ok2 {
println("success")
}
}
//AVAssetExportPresetPassthrough => concatenation
var assetExport = AVAssetExportSession(asset: composition, presetName: AVAssetExportPresetPassthrough)
assetExport.outputFileType = AVFileTypeWAVE
assetExport.outputURL = fileDestinationUrl
assetExport.exportAsynchronouslyWithCompletionHandler({
switch assetExport.status{
case AVAssetExportSessionStatus.Failed:
println("failed \(assetExport.error)")
case AVAssetExportSessionStatus.Cancelled:
println("cancelled \(assetExport.error)")
default:
println("complete")
var audioPlayer = AVAudioPlayer()
audioPlayer = AVAudioPlayer(contentsOfURL: fileDestinationUrl, error: nil)
audioPlayer.prepareToPlay()
audioPlayer.play()
}
})
}
在终端上(在 iPhone 上运行)收到此错误:
file:///var/mobile/Containers/Data/Application/3F49D360-B363-4600-B3BB-EE0810501910/Documents/resultmerge.wav
成功
失败,错误域名为 AVFoundationErrorDomain,代码为 -11838,“操作已中止”,用户信息为 0x174269ac0 {NSLocalizedDescription=Opération interrompue, NSLocalizedFailureReason=L’opération n’est pas prise en charge pour ce contenu multimédia.}
但我不知道为什么会出现这个错误。非常感谢您能给我任何帮助 :)
assetExport.outputFileType = AVFileTypeAppleM4A
仍然遇到了相同的错误。 - Pierre Louis Bresson