在Swift中连接两个音频文件并播放它们

概述我尝试在swift中连接.wav音频文件. 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 我尝试在swift中连接.wav音频文件.

这是我的代码：

@H_404_3@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() } })}

并在终端中运行此错误(在iPhone上运行)：

文件：///var/mobile/Containers/Data/Application/3F49D360-B363-4600-B3BB-EE0810501910/documents/resultmerge.wav

成功

失败错误域= AVFoundationErrorDomain代码= -11838“ *** 作interrompue”UserInfo = 0x174269ac0 {NSLocalizedDescription =Opérationinterpompue,NSLocalizedFailureReason = L’opérationn’estpas prize en charge pour cecontenumultimédia.}

但我不知道为什么我会收到这个错误.我非常感谢你能给我的任何帮助:)

我通过改变两件事来使你的代码工作：

>预设名称：从AVAssetExportPresetPassthrough到AVAssetExportPresetAppleM4A
>输出文件类型：从AVfileTypeWAVE到AVfileTypeAppleM4A

像这样修改您的assetExport声明：

@H_404_3@var assetExport = AVAssetExportSession(asset: composition,presetname: AVAssetExportPresetAppleM4A)assetExport.outputfileType = AVfileTypeAppleM4A

然后它将正确合并文件.

看起来AVAssetExportSession只导出M4A格式并忽略其他预设.可能有办法让它导出其他格式(通过继承它？),虽然我还没有探索过这种可能性.

总结

以上是内存溢出为你收集整理的在Swift中连接两个音频文件并播放它们全部内容，希望文章能够帮你解决在Swift中连接两个音频文件并播放它们所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。