I'm using SDAVAssetExportSession to convert MPMedaiItem to .m4a file and it's working great.
Link : Here
This is my code, end result will be .m4a file, when in pass fileName as 1.aac this code not working.
I don't know what to pass in outputFileType for .aac type.
//MARK:- Export Function
func exportAssetNew(_ asset: AVAsset, fileName: String,startPost:Int64,endPost:Int64) {
//print("\(#function)")
//print("startPost : \(startPost) :: endPost : \(endPost)")
let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
let trimmedSoundFileURL = documentsDirectory.appendingPathComponent(fileName)
//print("creating export session for \(asset)")
newSession = SDAVAssetExportSession(asset: loadedAssets)
newSession.outputFileType = AVFileTypeAppleM4A
newSession.outputURL = trimmedSoundFileURL
newSession.audioSettings = [AVFormatIDKey : kAudioFormatMPEG4AAC,AVNumberOfChannelsKey : 2,AVSampleRateKey:44100,AVEncoderBitRateKey:128000]
let startTime = CMTimeMake(startPost, 1)
let stopTime = CMTimeMake(endPost, 1)
newSession.timeRange = CMTimeRangeFromTimeToTime(startTime, stopTime)
newSession.exportAsynchronously(completionHandler: {
if self.newSession.status == AVAssetExportSessionStatus.completed {
//print("New Export Complete : fileName: ",fileName)
if self.songPartsUrls.count == 0 {
self.songPartsUrls.append(trimmedSoundFileURL)
self.childUploadingIndex = 0
// print("Stime : ",Date().timeIntervalSince1970)
self.createRequestWithAWS(songNamePrefix: self.regionPrefix)
}else{
self.songPartsUrls.append(trimmedSoundFileURL)
if self.isGoUploadFromChild {
self.isGoUploadFromChild = false
self.createRequestWithAWS(songNamePrefix: self.regionPrefix)
}
}
self.startSplitingSongs()
} else if self.newSession.status == AVAssetExportSessionStatus.cancelled {
print("New Export Cancel")
} else {
print("Error: ",self.newSession.error.localizedDescription)
}
})
}
If i pass .aac in file name this will give me error : Error: Cannot write output file
What i want is, the output result file in .aac format, i looked into class file but i can't get figure it out what to change in code for '.aac' file.
Does anyone have any idea?
