I wrote a program in Swift.I want to merge a video with an audio file, but got this error.
"failed Error Domain=AVFoundationErrorDomain Code=-11838 "Operation Stopped" UserInfo=0x17da4230 {NSLocalizedDescription=Operation Stopped, NSLocalizedFailureReason=The operation is not supported for this media.}"
code
func mergeAudio(audioURL: NSURL, moviePathUrl: NSURL, savePathUrl: NSURL) {
var composition = AVMutableComposition()
let trackVideo:AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeVideo, preferredTrackID: CMPersistentTrackID())
let trackAudio:AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeAudio, preferredTrackID: CMPersistentTrackID())
let option = NSDictionary(object: true, forKey: "AVURLAssetPreferPreciseDurationAndTimingKey")
let sourceAsset = AVURLAsset(URL: moviePathUrl, options: option as [NSObject : AnyObject])
let audioAsset = AVURLAsset(URL: audioURL, options: option as [NSObject : AnyObject])
let tracks = sourceAsset.tracksWithMediaType(AVMediaTypeVideo)
let audios = audioAsset.tracksWithMediaType(AVMediaTypeAudio)
if tracks.count > 0 {
let assetTrack:AVAssetTrack = tracks[0] as! AVAssetTrack
let assetTrackAudio:AVAssetTrack = audios[0] as! AVAssetTrack
let audioDuration:CMTime = assetTrackAudio.timeRange.duration
let audioSeconds:Float64 = CMTimeGetSeconds(assetTrackAudio.timeRange.duration)
trackVideo.insertTimeRange(CMTimeRangeMake(kCMTimeZero,audioDuration), ofTrack: assetTrack, atTime: kCMTimeZero, error: nil)
trackAudio.insertTimeRange(CMTimeRangeMake(kCMTimeZero,audioDuration), ofTrack: assetTrackAudio, atTime: kCMTimeZero, error: nil)
}
var assetExport: AVAssetExportSession = AVAssetExportSession(asset: composition, presetName: AVAssetExportPresetPassthrough)
assetExport.outputFileType = AVFileTypeMPEG4
assetExport.outputURL = savePathUrl
self.tmpMovieURL = savePathUrl
assetExport.shouldOptimizeForNetworkUse = true
assetExport.exportAsynchronouslyWithCompletionHandler { () -> Void in
switch assetExport.status {
case AVAssetExportSessionStatus.Completed:
let assetsLib = ALAssetsLibrary()
assetsLib.writeVideoAtPathToSavedPhotosAlbum(savePathUrl, completionBlock: nil)
println("success")
case AVAssetExportSessionStatus.Failed:
println("failed \(assetExport.error)")
case AVAssetExportSessionStatus.Cancelled:
println("cancelled \(assetExport.error)")
default:
println("complete")
}
}
}
In my idea media type like mpeg4 is wrong.
Where is the problem? What am i missing?
Improved code (of Govind's answer) with some additional features:
Merge audio of the video + external audio (the initial answer was dropping the sound of the video)
Flip video horizontally if needed (I personally use it when user captures using frontal camera, btw instagram flips it too)
Apply preferredTransform correctly which solves the issue when video was saved rotated (video is external: captured by other device/generated by other app)
Removed some unused code with VideoComposition.
Added a completion handler to the method so that it can be called from a different class.
Update to Swift 4.
Step 1.
import UIKit
import AVFoundation
import AVKit
import AssetsLibrary
Step 2.
/// Merges video and sound while keeping sound of the video too
///
/// - Parameters:
/// - videoUrl: URL to video file
/// - audioUrl: URL to audio file
/// - shouldFlipHorizontally: pass True if video was recorded using frontal camera otherwise pass False
/// - completion: completion of saving: error or url with final video
func mergeVideoAndAudio(videoUrl: URL,
audioUrl: URL,
shouldFlipHorizontally: Bool = false,
completion: #escaping (_ error: Error?, _ url: URL?) -> Void) {
let mixComposition = AVMutableComposition()
var mutableCompositionVideoTrack = [AVMutableCompositionTrack]()
var mutableCompositionAudioTrack = [AVMutableCompositionTrack]()
var mutableCompositionAudioOfVideoTrack = [AVMutableCompositionTrack]()
//start merge
let aVideoAsset = AVAsset(url: videoUrl)
let aAudioAsset = AVAsset(url: audioUrl)
let compositionAddVideo = mixComposition.addMutableTrack(withMediaType: AVMediaTypeVideo,
preferredTrackID: kCMPersistentTrackID_Invalid)
let compositionAddAudio = mixComposition.addMutableTrack(withMediaType: AVMediaTypeAudio,
preferredTrackID: kCMPersistentTrackID_Invalid)
let compositionAddAudioOfVideo = mixComposition.addMutableTrack(withMediaType: AVMediaTypeAudio,
preferredTrackID: kCMPersistentTrackID_Invalid)
let aVideoAssetTrack: AVAssetTrack = aVideoAsset.tracks(withMediaType: AVMediaTypeVideo)[0]
let aAudioOfVideoAssetTrack: AVAssetTrack? = aVideoAsset.tracks(withMediaType: AVMediaTypeAudio).first
let aAudioAssetTrack: AVAssetTrack = aAudioAsset.tracks(withMediaType: AVMediaTypeAudio)[0]
// Default must have tranformation
compositionAddVideo.preferredTransform = aVideoAssetTrack.preferredTransform
if shouldFlipHorizontally {
// Flip video horizontally
var frontalTransform: CGAffineTransform = CGAffineTransform(scaleX: -1.0, y: 1.0)
frontalTransform = frontalTransform.translatedBy(x: -aVideoAssetTrack.naturalSize.width, y: 0.0)
frontalTransform = frontalTransform.translatedBy(x: 0.0, y: -aVideoAssetTrack.naturalSize.width)
compositionAddVideo.preferredTransform = frontalTransform
}
mutableCompositionVideoTrack.append(compositionAddVideo)
mutableCompositionAudioTrack.append(compositionAddAudio)
mutableCompositionAudioOfVideoTrack.append(compositionAddAudioOfVideo)
do {
try mutableCompositionVideoTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero,
aVideoAssetTrack.timeRange.duration),
of: aVideoAssetTrack,
at: kCMTimeZero)
//In my case my audio file is longer then video file so i took videoAsset duration
//instead of audioAsset duration
try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero,
aVideoAssetTrack.timeRange.duration),
of: aAudioAssetTrack,
at: kCMTimeZero)
// adding audio (of the video if exists) asset to the final composition
if let aAudioOfVideoAssetTrack = aAudioOfVideoAssetTrack {
try mutableCompositionAudioOfVideoTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero,
aVideoAssetTrack.timeRange.duration),
of: aAudioOfVideoAssetTrack,
at: kCMTimeZero)
}
} catch {
print(error.localizedDescription)
}
// Exporting
let savePathUrl: URL = URL(fileURLWithPath: NSHomeDirectory() + "/Documents/newVideo.mp4")
do { // delete old video
try FileManager.default.removeItem(at: savePathUrl)
} catch { print(error.localizedDescription) }
let assetExport: AVAssetExportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality)!
assetExport.outputFileType = AVFileTypeMPEG4
assetExport.outputURL = savePathUrl
assetExport.shouldOptimizeForNetworkUse = true
assetExport.exportAsynchronously { () -> Void in
switch assetExport.status {
case AVAssetExportSessionStatus.completed:
print("success")
completion(nil, savePathUrl)
case AVAssetExportSessionStatus.failed:
print("failed \(assetExport.error?.localizedDescription ?? "error nil")")
completion(assetExport.error, nil)
case AVAssetExportSessionStatus.cancelled:
print("cancelled \(assetExport.error?.localizedDescription ?? "error nil")")
completion(assetExport.error, nil)
default:
print("complete")
completion(assetExport.error, nil)
}
}
}
Again thanks to #Govind's answer! It helped me a lot!
Hope this update helps someone too:)
In Above question same error I found due to wrong savePathUrl, destination URL should be like below code including new video name.
I was looking for the code to Merge audio and video files into one video but couldn't find anywhere so after spending hours while reading apple docs I wrote this code.
NOTE : This is tested and 100% working code for me.
Stap : 1
Import this modules in your viewController.
import UIKit
import AVFoundation
import AVKit
import AssetsLibrary
step 2:
Add this function in your code
func mergeFilesWithUrl(videoUrl:NSURL, audioUrl:NSURL)
{
let mixComposition : AVMutableComposition = AVMutableComposition()
var mutableCompositionVideoTrack : [AVMutableCompositionTrack] = []
var mutableCompositionAudioTrack : [AVMutableCompositionTrack] = []
let totalVideoCompositionInstruction : AVMutableVideoCompositionInstruction = AVMutableVideoCompositionInstruction()
//start merge
let aVideoAsset : AVAsset = AVAsset(URL: videoUrl)
let aAudioAsset : AVAsset = AVAsset(URL: audioUrl)
mutableCompositionVideoTrack.append(mixComposition.addMutableTrackWithMediaType(AVMediaTypeVideo, preferredTrackID: kCMPersistentTrackID_Invalid))
mutableCompositionAudioTrack.append( mixComposition.addMutableTrackWithMediaType(AVMediaTypeAudio, preferredTrackID: kCMPersistentTrackID_Invalid))
let aVideoAssetTrack : AVAssetTrack = aVideoAsset.tracksWithMediaType(AVMediaTypeVideo)[0]
let aAudioAssetTrack : AVAssetTrack = aAudioAsset.tracksWithMediaType(AVMediaTypeAudio)[0]
do{
try mutableCompositionVideoTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), ofTrack: aVideoAssetTrack, atTime: kCMTimeZero)
//In my case my audio file is longer then video file so i took videoAsset duration
//instead of audioAsset duration
try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), ofTrack: aAudioAssetTrack, atTime: kCMTimeZero)
//Use this instead above line if your audiofile and video file's playing durations are same
// try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), ofTrack: aAudioAssetTrack, atTime: kCMTimeZero)
}catch{
}
totalVideoCompositionInstruction.timeRange = CMTimeRangeMake(kCMTimeZero,aVideoAssetTrack.timeRange.duration )
let mutableVideoComposition : AVMutableVideoComposition = AVMutableVideoComposition()
mutableVideoComposition.frameDuration = CMTimeMake(1, 30)
mutableVideoComposition.renderSize = CGSizeMake(1280,720)
// playerItem = AVPlayerItem(asset: mixComposition)
// player = AVPlayer(playerItem: playerItem!)
//
//
// AVPlayerVC.player = player
//find your video on this URl
let savePathUrl : NSURL = NSURL(fileURLWithPath: NSHomeDirectory() + "/Documents/newVideo.mp4")
let assetExport: AVAssetExportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality)!
assetExport.outputFileType = AVFileTypeMPEG4
assetExport.outputURL = savePathUrl
assetExport.shouldOptimizeForNetworkUse = true
assetExport.exportAsynchronouslyWithCompletionHandler { () -> Void in
switch assetExport.status {
case AVAssetExportSessionStatus.Completed:
//Uncomment this if u want to store your video in asset
//let assetsLib = ALAssetsLibrary()
//assetsLib.writeVideoAtPathToSavedPhotosAlbum(savePathUrl, completionBlock: nil)
print("success")
case AVAssetExportSessionStatus.Failed:
print("failed \(assetExport.error)")
case AVAssetExportSessionStatus.Cancelled:
print("cancelled \(assetExport.error)")
default:
print("complete")
}
}
}
Step 3:
Call function where u want like this
let videoUrl : NSURL = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("SampleVideo", ofType: "mp4")!)
let audioUrl : NSURL = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("SampleAudio", ofType: "mp3")!)
mergeFilesWithUrl(videoUrl, audioUrl: audioUrl)
hope this will help you and will save your time.
Swift 4.2 / 5
func mergeVideoWithAudio(videoUrl: URL, audioUrl: URL, success: #escaping ((URL) -> Void), failure: #escaping ((Error?) -> Void)) {
let mixComposition: AVMutableComposition = AVMutableComposition()
var mutableCompositionVideoTrack: [AVMutableCompositionTrack] = []
var mutableCompositionAudioTrack: [AVMutableCompositionTrack] = []
let totalVideoCompositionInstruction : AVMutableVideoCompositionInstruction = AVMutableVideoCompositionInstruction()
let aVideoAsset: AVAsset = AVAsset(url: videoUrl)
let aAudioAsset: AVAsset = AVAsset(url: audioUrl)
if let videoTrack = mixComposition.addMutableTrack(withMediaType: .video, preferredTrackID: kCMPersistentTrackID_Invalid), let audioTrack = mixComposition.addMutableTrack(withMediaType: .audio, preferredTrackID: kCMPersistentTrackID_Invalid) {
mutableCompositionVideoTrack.append(videoTrack)
mutableCompositionAudioTrack.append(audioTrack)
if let aVideoAssetTrack: AVAssetTrack = aVideoAsset.tracks(withMediaType: .video).first, let aAudioAssetTrack: AVAssetTrack = aAudioAsset.tracks(withMediaType: .audio).first {
do {
try mutableCompositionVideoTrack.first?.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: aVideoAssetTrack.timeRange.duration), of: aVideoAssetTrack, at: CMTime.zero)
try mutableCompositionAudioTrack.first?.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: aVideoAssetTrack.timeRange.duration), of: aAudioAssetTrack, at: CMTime.zero)
videoTrack.preferredTransform = aVideoAssetTrack.preferredTransform
} catch{
print(error)
}
totalVideoCompositionInstruction.timeRange = CMTimeRangeMake(start: CMTime.zero,duration: aVideoAssetTrack.timeRange.duration)
}
}
let mutableVideoComposition: AVMutableVideoComposition = AVMutableVideoComposition()
mutableVideoComposition.frameDuration = CMTimeMake(value: 1, timescale: 30)
mutableVideoComposition.renderSize = CGSize(width: 480, height: 640)
if let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first {
let outputURL = URL(fileURLWithPath: documentsPath).appendingPathComponent("\("fileName").m4v")
do {
if FileManager.default.fileExists(atPath: outputURL.path) {
try FileManager.default.removeItem(at: outputURL)
}
} catch { }
if let exportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality) {
exportSession.outputURL = outputURL
exportSession.outputFileType = AVFileType.mp4
exportSession.shouldOptimizeForNetworkUse = true
/// try to export the file and handle the status cases
exportSession.exportAsynchronously(completionHandler: {
switch exportSession.status {
case .failed:
if let _error = exportSession.error {
failure(_error)
}
case .cancelled:
if let _error = exportSession.error {
failure(_error)
}
default:
print("finished")
success(outputURL)
}
})
} else {
failure(nil)
}
}
}
Version Swift3 with URL and new syntax.
func mergeFilesWithUrl(videoUrl:URL, audioUrl:URL)
{
let mixComposition : AVMutableComposition = AVMutableComposition()
var mutableCompositionVideoTrack : [AVMutableCompositionTrack] = []
var mutableCompositionAudioTrack : [AVMutableCompositionTrack] = []
let totalVideoCompositionInstruction : AVMutableVideoCompositionInstruction = AVMutableVideoCompositionInstruction()
//start merge
let aVideoAsset : AVAsset = AVAsset(url: videoUrl)
let aAudioAsset : AVAsset = AVAsset(url: audioUrl)
mutableCompositionVideoTrack.append(mixComposition.addMutableTrack(withMediaType: AVMediaTypeVideo, preferredTrackID: kCMPersistentTrackID_Invalid))
mutableCompositionAudioTrack.append( mixComposition.addMutableTrack(withMediaType: AVMediaTypeAudio, preferredTrackID: kCMPersistentTrackID_Invalid))
let aVideoAssetTrack : AVAssetTrack = aVideoAsset.tracks(withMediaType: AVMediaTypeVideo)[0]
let aAudioAssetTrack : AVAssetTrack = aAudioAsset.tracks(withMediaType: AVMediaTypeAudio)[0]
do{
try mutableCompositionVideoTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), of: aVideoAssetTrack, at: kCMTimeZero)
//In my case my audio file is longer then video file so i took videoAsset duration
//instead of audioAsset duration
try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), of: aAudioAssetTrack, at: kCMTimeZero)
//Use this instead above line if your audiofile and video file's playing durations are same
// try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), ofTrack: aAudioAssetTrack, atTime: kCMTimeZero)
}catch{
}
totalVideoCompositionInstruction.timeRange = CMTimeRangeMake(kCMTimeZero,aVideoAssetTrack.timeRange.duration )
let mutableVideoComposition : AVMutableVideoComposition = AVMutableVideoComposition()
mutableVideoComposition.frameDuration = CMTimeMake(1, 30)
mutableVideoComposition.renderSize = CGSize(width: 1280, height: 720)
// playerItem = AVPlayerItem(asset: mixComposition)
// player = AVPlayer(playerItem: playerItem!)
//
//
// AVPlayerVC.player = player
//find your video on this URl
let savePathUrl : URL = URL(fileURLWithPath: NSHomeDirectory() + "/Documents/newVideo.mp4")
let assetExport: AVAssetExportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality)!
assetExport.outputFileType = AVFileTypeMPEG4
assetExport.outputURL = savePathUrl
assetExport.shouldOptimizeForNetworkUse = true
assetExport.exportAsynchronously { () -> Void in
switch assetExport.status {
case AVAssetExportSessionStatus.completed:
//Uncomment this if u want to store your video in asset
//let assetsLib = ALAssetsLibrary()
//assetsLib.writeVideoAtPathToSavedPhotosAlbum(savePathUrl, completionBlock: nil)
print("success")
case AVAssetExportSessionStatus.failed:
print("failed \(assetExport.error)")
case AVAssetExportSessionStatus.cancelled:
print("cancelled \(assetExport.error)")
default:
print("complete")
}
}
}
Swift 5 version (Also repeats audio if video is larger than audio) : Just pass audio and video URLs. I have tried this with local video and remote audio url.
func mergeVideoWithAudio(videoUrl: URL,
audioUrl: URL,
success: #escaping ((URL) -> Void),
failure: #escaping ((Error?) -> Void)) {
let mixComposition: AVMutableComposition = AVMutableComposition()
var mutableCompositionVideoTrack: [AVMutableCompositionTrack] = []
var mutableCompositionAudioTrack: [AVMutableCompositionTrack] = []
let totalVideoCompositionInstruction: AVMutableVideoCompositionInstruction = AVMutableVideoCompositionInstruction()
let aVideoAsset: AVAsset = AVAsset(url: videoUrl)
let aAudioAsset: AVAsset = AVAsset(url: audioUrl)
if let videoTrack = mixComposition.addMutableTrack(withMediaType: .video, preferredTrackID: kCMPersistentTrackID_Invalid), let audioTrack = mixComposition.addMutableTrack(withMediaType: .audio, preferredTrackID: kCMPersistentTrackID_Invalid) {
mutableCompositionVideoTrack.append( videoTrack )
mutableCompositionAudioTrack.append( audioTrack )
if let aVideoAssetTrack: AVAssetTrack = aVideoAsset.tracks(withMediaType: .video).first, let aAudioAssetTrack: AVAssetTrack = aAudioAsset.tracks(withMediaType: .audio).first {
do {
try mutableCompositionVideoTrack.first?.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: aVideoAssetTrack.timeRange.duration), of: aVideoAssetTrack, at: CMTime.zero)
let videoDuration = aVideoAsset.duration
if CMTimeCompare(videoDuration, aAudioAsset.duration) == -1 {
try mutableCompositionAudioTrack.first?.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: aVideoAssetTrack.timeRange.duration), of: aAudioAssetTrack, at: CMTime.zero)
} else if CMTimeCompare(videoDuration, aAudioAsset.duration) == 1 {
var currentTime = CMTime.zero
while true {
var audioDuration = aAudioAsset.duration
let totalDuration = CMTimeAdd(currentTime, audioDuration)
if CMTimeCompare(totalDuration, videoDuration) == 1 {
audioDuration = CMTimeSubtract(totalDuration, videoDuration)
}
try mutableCompositionAudioTrack.first?.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: aVideoAssetTrack.timeRange.duration), of: aAudioAssetTrack, at: currentTime)
currentTime = CMTimeAdd(currentTime, audioDuration)
if CMTimeCompare(currentTime, videoDuration) == 1 || CMTimeCompare(currentTime, videoDuration) == 0 {
break
}
}
}
videoTrack.preferredTransform = aVideoAssetTrack.preferredTransform
} catch {
print(error)
}
totalVideoCompositionInstruction.timeRange = CMTimeRangeMake(start: CMTime.zero, duration: aVideoAssetTrack.timeRange.duration)
}
}
let mutableVideoComposition: AVMutableVideoComposition = AVMutableVideoComposition()
mutableVideoComposition.frameDuration = CMTimeMake(value: 1, timescale: 30)
mutableVideoComposition.renderSize = CGSize(width: 480, height: 640)
if let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first {
let outputURL = URL(fileURLWithPath: documentsPath).appendingPathComponent("\("fileName").m4v")
do {
if FileManager.default.fileExists(atPath: outputURL.path) {
try FileManager.default.removeItem(at: outputURL)
}
} catch { }
if let exportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality) {
exportSession.outputURL = outputURL
exportSession.outputFileType = AVFileType.mp4
exportSession.shouldOptimizeForNetworkUse = true
// try to export the file and handle the status cases
exportSession.exportAsynchronously(completionHandler: {
switch exportSession.status {
case .failed:
if let error = exportSession.error {
failure(error)
}
case .cancelled:
if let error = exportSession.error {
failure(error)
}
default:
print("finished")
success(outputURL)
}
})
} else {
failure(nil)
}
}
}
Updated for Swift Concurrency (Swift 5.7)
Some errors to throw:
enum VideoAudioMergeError: Error {
case compositionAddVideoFailed, compositionAddAudioFailed, compositionAddAudioOfVideoFailed, unknownError
}
And the method:
/// Merges video and sound while keeping sound of the video too
///
/// - Parameters:
/// - videoUrl: URL to video file
/// - audioUrl: URL to audio file
/// - shouldFlipHorizontally: pass True if video was recorded using frontal camera otherwise pass False
func mergeVideoAndAudio(videoUrl: URL,
audioUrl: URL,
shouldFlipHorizontally: Bool = false) async throws -> URL {
let mixComposition = AVMutableComposition()
var mutableCompositionVideoTrack = [AVMutableCompositionTrack]()
var mutableCompositionAudioTrack = [AVMutableCompositionTrack]()
var mutableCompositionAudioOfVideoTrack = [AVMutableCompositionTrack]()
//start merge
let aVideoAsset = AVAsset(url: videoUrl)
let aAudioAsset = AVAsset(url: audioUrl)
guard let compositionAddVideo = mixComposition.addMutableTrack(withMediaType: AVMediaType.video,
preferredTrackID: kCMPersistentTrackID_Invalid) else {
throw VideoAudioMergeError.compositionAddVideoFailed
}
guard let compositionAddAudio = mixComposition.addMutableTrack(withMediaType: AVMediaType.audio,
preferredTrackID: kCMPersistentTrackID_Invalid) else {
throw VideoAudioMergeError.compositionAddAudioFailed
}
guard let compositionAddAudioOfVideo = mixComposition.addMutableTrack(withMediaType: AVMediaType.audio,
preferredTrackID: kCMPersistentTrackID_Invalid) else {
throw VideoAudioMergeError.compositionAddAudioOfVideoFailed
}
do {
let aVideoAssetTrack: AVAssetTrack = try await aVideoAsset.loadTracks(withMediaType: AVMediaType.video)[0]
let aAudioOfVideoAssetTrack: AVAssetTrack? = try await aVideoAsset.loadTracks(withMediaType: AVMediaType.audio).first
let aAudioAssetTrack: AVAssetTrack = try await aAudioAsset.loadTracks(withMediaType: AVMediaType.audio)[0]
// Default must have transformation
compositionAddVideo.preferredTransform = try await aVideoAssetTrack.load(.preferredTransform)
if shouldFlipHorizontally {
// Flip video horizontally
var frontalTransform: CGAffineTransform = CGAffineTransform(scaleX: -1.0, y: 1.0)
let naturalSize = try await aVideoAssetTrack.load(.naturalSize)
frontalTransform = frontalTransform.translatedBy(x: -naturalSize.width, y: 0.0)
frontalTransform = frontalTransform.translatedBy(x: 0.0, y: -naturalSize.width)
compositionAddVideo.preferredTransform = frontalTransform
}
mutableCompositionVideoTrack.append(compositionAddVideo)
mutableCompositionAudioTrack.append(compositionAddAudio)
mutableCompositionAudioOfVideoTrack.append(compositionAddAudioOfVideo)
let videoTimeRange = try await aVideoAssetTrack.load(.timeRange)
try mutableCompositionVideoTrack[0].insertTimeRange(CMTimeRangeMake(start: CMTime.zero,
duration: videoTimeRange.duration),
of: aVideoAssetTrack,
at: CMTime.zero)
//In my case my audio file is longer then video file so i took videoAsset duration
//instead of audioAsset duration
try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(start: CMTime.zero,
duration: videoTimeRange.duration),
of: aAudioAssetTrack,
at: CMTime.zero)
// adding audio (of the video if exists) asset to the final composition
if let aAudioOfVideoAssetTrack = aAudioOfVideoAssetTrack {
try mutableCompositionAudioOfVideoTrack[0].insertTimeRange(CMTimeRangeMake(start: CMTime.zero,
duration: videoTimeRange.duration),
of: aAudioOfVideoAssetTrack,
at: CMTime.zero)
}
} catch {
throw error
}
// Exporting
let savePathUrl: URL = URL(fileURLWithPath: NSHomeDirectory() + "/Documents/newVideo.mp4")
do { // delete old video
try FileManager.default.removeItem(at: savePathUrl)
} catch { print(error.localizedDescription) }
let assetExport: AVAssetExportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality)!
assetExport.outputFileType = AVFileType.mp4
assetExport.outputURL = savePathUrl
assetExport.shouldOptimizeForNetworkUse = true
await assetExport.export()
if assetExport.status == .completed {
return savePathUrl
}
if let error = assetExport.error {
throw error
} else {
throw VideoAudioMergeError.unknownError
}
}
Related
My goal is to merge audio (mp3 music) with video captured by iPhone camera, I am able to merge audio with video using AVMutableComposition but in final output video sounds is not coming.
below is the code I am using:
open func mergeVideoWithAudio(videoUrl: URL, audioUrl: URL){
let mixComposition: AVMutableComposition = AVMutableComposition()
var mutableCompositionVideoTrack: [AVMutableCompositionTrack] = []
var mutableCompositionAudioTrack: [AVMutableCompositionTrack] = []
let totalVideoCompositionInstruction : AVMutableVideoCompositionInstruction = AVMutableVideoCompositionInstruction()
let aVideoAsset: AVAsset = AVAsset(url: videoUrl)
let aAudioAsset: AVAsset = AVAsset(url: audioUrl)
if let videoTrack = mixComposition.addMutableTrack(withMediaType: .video, preferredTrackID: kCMPersistentTrackID_Invalid), let audioTrack = mixComposition.addMutableTrack(withMediaType: .audio, preferredTrackID: kCMPersistentTrackID_Invalid) {
mutableCompositionVideoTrack.append(videoTrack)
mutableCompositionAudioTrack.append(audioTrack)
}
let time = CMTimeMakeWithSeconds(Float64(musicTrimmerController.currentPlayerPosition), 1000)
if let aVideoAssetTrack: AVAssetTrack = aVideoAsset.tracks(withMediaType: .video).first,
let aAudioAssetTrack: AVAssetTrack = aAudioAsset.tracks(withMediaType: .audio).first {
do {
try mutableCompositionVideoTrack.first?.insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), of: aVideoAssetTrack, at: kCMTimeZero)
try mutableCompositionAudioTrack.first?.insertTimeRange(CMTimeRangeMake(time, aVideoAssetTrack.timeRange.duration), of: aAudioAssetTrack, at: kCMTimeZero)
} catch{
print(error)
}
totalVideoCompositionInstruction.timeRange = CMTimeRangeMake(kCMTimeZero,aVideoAssetTrack.timeRange.duration)
let compositionV = mixComposition.tracks(withMediaType: AVMediaType.video).last
if ((aVideoAssetTrack != nil) && (compositionV != nil)) {
compositionV?.preferredTransform = (aVideoAssetTrack.preferredTransform)
}
}
if let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first {
let outputURL = URL(fileURLWithPath: documentsPath).appendingPathComponent("movie.mov")
do {
if FileManager.default.fileExists(atPath: outputURL.path) {
try FileManager.default.removeItem(at: outputURL)
}
} catch { }
if let exportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality) {0
exportSession.outputURL = outputURL
exportSession.outputFileType = AVFileType.mp4
exportSession.shouldOptimizeForNetworkUse = true
/// try to export the file and handle the status cases
exportSession.exportAsynchronously(completionHandler: {
switch exportSession.status {
case .failed:
print(exportSession.error as Any)
case .cancelled:
print(exportSession.error as Any)
default:
print("Save video output")
}
})
}
}
}
I am new in swift. I need to remove the audio from video files and play them via URL. I have gone through these link1 & link2 ...but there were many errors when I tried to convert them in swift.
Any help would be greatly appreciated.
Swift 4.2
var mutableVideoURL: URL! //final video url
func removeAudioFromVideo(_ videoURL: URL) {
let inputVideoURL: URL = videoURL
let sourceAsset = AVURLAsset(url: inputVideoURL)
let sourceVideoTrack: AVAssetTrack? = sourceAsset.tracks(withMediaType: AVMediaType.video)[0]
let composition : AVMutableComposition = AVMutableComposition()
let compositionVideoTrack: AVMutableCompositionTrack? = composition.addMutableTrack(withMediaType: AVMediaType.video, preferredTrackID: kCMPersistentTrackID_Invalid)
compositionVideoTrack!.preferredTransform = sourceVideoTrack!.preferredTransform
let x: CMTimeRange = CMTimeRangeMake(start: CMTime.zero, duration: sourceAsset.duration)
_ = try? compositionVideoTrack!.insertTimeRange(x, of: sourceVideoTrack!, at: CMTime.zero)
mutableVideoURL = documentsURL.appendingPathComponent("pppppppppp.mp4")
let exporter: AVAssetExportSession = AVAssetExportSession(asset: composition, presetName: AVAssetExportPresetHighestQuality)!
exporter.outputFileType = AVFileType.mp4
exporter.outputURL = mutableVideoURL
removeFileAtURLIfExists(url: mutableVideoURL)
exporter.exportAsynchronously(completionHandler:
{
switch exporter.status
{
case AVAssetExportSession.Status.failed:
print("1000000000failed \(exporter.error)")
case AVAssetExportSession.Status.cancelled:
print("1000000000cancelled \(exporter.error)")
case AVAssetExportSession.Status.unknown:
print("1000000000unknown\(exporter.error)")
case AVAssetExportSession.Status.waiting:
print("1000000000waiting\(exporter.error)")
case AVAssetExportSession.Status.exporting:
print("1000000000exporting\(exporter.error)")
default:
print("1000000000-----Mutable video exportation complete.")
}
})
}
func removeFileAtURLIfExists(url:URL) {
let filePath = url.path
let fileManager = FileManager.default
if fileManager.fileExists(atPath: filePath) {
do{
try fileManager.removeItem(atPath: filePath)
} catch {
print("Couldn't remove existing destination file: \(error)")
}
}
}
Note : the addition of this line
compositionVideoTrack?.preferredTransform = sourceVideoTrack!.preferredTransform
that preserve orientation of video
with the help of this link I wrote this code & this worked for me...
var mutableVideoURL = NSURL() //final video url
func removeAudioFromVideo(_ videoURL: URL) {
let inputVideoURL: URL = videoURL
let sourceAsset = AVURLAsset(url: inputVideoURL)
let sourceVideoTrack: AVAssetTrack? = sourceAsset.tracks(withMediaType: AVMediaTypeVideo)[0]
let composition : AVMutableComposition = AVMutableComposition()
let compositionVideoTrack: AVMutableCompositionTrack? = composition.addMutableTrack(withMediaType: AVMediaTypeVideo, preferredTrackID: kCMPersistentTrackID_Invalid)
let x: CMTimeRange = CMTimeRangeMake(kCMTimeZero, sourceAsset.duration)
_ = try? compositionVideoTrack!.insertTimeRange(x, of: sourceVideoTrack!, at: kCMTimeZero)
mutableVideoURL = NSURL(fileURLWithPath: NSHomeDirectory() + "/Documents/FinalVideo.mp4")
let exporter: AVAssetExportSession = AVAssetExportSession(asset: composition, presetName: AVAssetExportPresetHighestQuality)!
exporter.outputFileType = AVFileTypeMPEG4
exporter.outputURL = mutableVideoURL as URL
removeFileAtURLIfExists(url: mutableVideoURL)
exporter.exportAsynchronously(completionHandler:
{
switch exporter.status
{
case AVAssetExportSessionStatus.failed:
print("failed \(exporter.error)")
case AVAssetExportSessionStatus.cancelled:
print("cancelled \(exporter.error)")
case AVAssetExportSessionStatus.unknown:
print("unknown\(exporter.error)")
case AVAssetExportSessionStatus.waiting:
print("waiting\(exporter.error)")
case AVAssetExportSessionStatus.exporting:
print("exporting\(exporter.error)")
default:
print("-----Mutable video exportation complete.")
}
})
}
func removeFileAtURLIfExists(url: NSURL) {
if let filePath = url.path {
let fileManager = FileManager.default
if fileManager.fileExists(atPath: filePath) {
do{
try fileManager.removeItem(atPath: filePath)
} catch let error as NSError {
print("Couldn't remove existing destination file: \(error)")
}
}
}
}
I am following this code to merge audio and video files. It works great. Suppose, audio length is 5 seconds and video length is 20 seconds. While I merged this files in the exported video there is no sound after 5 second. That is obvious cause my audio length is 5 seconds. But is it possible to run the audio in loop throughout the full video session.
var finalVideoURL = NSURL()
var finalVideoName = String()
func mergeAudio&VideoFiles(videoUrl:NSURL, audioUrl:NSURL){
let mixComposition : AVMutableComposition = AVMutableComposition()
var mutableCompositionVideoTrack : [AVMutableCompositionTrack] = []
var mutableCompositionAudioTrack : [AVMutableCompositionTrack] = []
let totalVideoCompositionInstruction : AVMutableVideoCompositionInstruction = AVMutableVideoCompositionInstruction()
//start merge
let aVideoAsset : AVAsset = AVAsset(url: videoUrl as URL)
let aAudioAsset : AVAsset = AVAsset(url: audioUrl as URL)
mutableCompositionVideoTrack.append(mixComposition.addMutableTrack(withMediaType: AVMediaTypeVideo, preferredTrackID: kCMPersistentTrackID_Invalid))
mutableCompositionAudioTrack.append( mixComposition.addMutableTrack(withMediaType: AVMediaTypeAudio, preferredTrackID: kCMPersistentTrackID_Invalid))
let aVideoAssetTrack : AVAssetTrack = aVideoAsset.tracks(withMediaType: AVMediaTypeVideo)[0]
let aAudioAssetTrack : AVAssetTrack = aAudioAsset.tracks(withMediaType: AVMediaTypeAudio)[0]
do{
try mutableCompositionVideoTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), of: aVideoAssetTrack, at: kCMTimeZero)
try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), of: aAudioAssetTrack, at: kCMTimeZero)
}catch{
}
totalVideoCompositionInstruction.timeRange = CMTimeRangeMake(kCMTimeZero,aVideoAssetTrack.timeRange.duration )
let mutableVideoComposition : AVMutableVideoComposition = AVMutableVideoComposition()
mutableVideoComposition.frameDuration = CMTimeMake(1, 30)
mutableVideoComposition.renderSize = CGSize(width: 1280, height: 720)
finalVideoURL = NSURL(fileURLWithPath: NSHomeDirectory() + "/Documents/FinalVideo.mp4")
finalVideoName = "FinalVideo.mp4"
let assetExport: AVAssetExportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality)!
assetExport.outputFileType = AVFileTypeMPEG4
assetExport.outputURL = finalVideoURL as URL
assetExport.shouldOptimizeForNetworkUse = true
assetExport.exportAsynchronously { () -> Void in
switch assetExport.status {
case AVAssetExportSessionStatus.completed:
print("Export movie to document directory from trimmed audio and mutable video complete :)")
case AVAssetExportSessionStatus.failed:
print("failed \(assetExport.error)")
case AVAssetExportSessionStatus.cancelled:
print("cancelled \(assetExport.error)")
default:
print("complete")
}
}
}
It was asked a long time ago, but it can certainly help someone in the future,
you can do it by inserting the time range of the AVAssetTrack multiple times:
let vDuration = aVideoAsset.duration
let audioAssetTrack = mixComposition.addMutableTrack(withMediaType: .audio, preferredTrackID: kCMPersistentTrackID_Invalid)
do {
var currentDuration = CMTime.zero
while currentDuration < vDuration {
let restTime = CMTimeSubtract(vDuration, currentDuration)
let maxTime = CMTimeMinimum(aAudioAsset.duration, restTime)
try audioAssetTrack.insertTimeRange(CMTimeRangeMake(start: CMTime.zero, duration: maxTime),
of: aAudioAsset.tracks(withMediaType: .audio)[0],
at: currentDuration)
currentDuration = CMTimeAdd(currentDuration, aAudioAsset.duration)
}
} catch {
print("Failed to load audio track")
continue
}
Im trying to merge N audio tracks, to an video file.
The video is in MP4 format, and all audios are m4a.
All the preparation works well but when the export finishes, always fails.
Heres my code :
func mixAudioAndVideo() {
self.player?.pause()
let mixComposition = AVMutableComposition()
let paths = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
let docsDirect = paths[0]
for audioTrack in self.audioTracks {
let musicFile = docsDirect.URLByAppendingPathComponent(audioTrack.audioName)
let audioAsset = AVURLAsset(URL: musicFile!, options: nil)
let audioTimeRange = CMTimeRangeMake(audioTrack.audioTime!, audioAsset.duration)
let compositionAudioTrack:AVMutableCompositionTrack = mixComposition.addMutableTrackWithMediaType(AVMediaTypeAudio, preferredTrackID: kCMPersistentTrackID_Invalid)
do {
try compositionAudioTrack.insertTimeRange(audioTimeRange, ofTrack: audioAsset.tracksWithMediaType(AVMediaTypeAudio).first!, atTime: audioTrack.audioTime!)
} catch let error {
print(error)
}
}
let videoAsset = AVURLAsset(URL: video!.movieURL, options: nil)
let videoTimeRange = CMTimeRangeMake(kCMTimeZero, videoAsset.duration)
let compositionVideoTrack = mixComposition.addMutableTrackWithMediaType(AVMediaTypeVideo, preferredTrackID: kCMPersistentTrackID_Invalid)
do {
try compositionVideoTrack.insertTimeRange(videoTimeRange, ofTrack: videoAsset.tracksWithMediaType(AVMediaTypeVideo).first!, atTime: kCMTimeZero)
} catch let error {
print(error)
}
let videoName = "video\(self.audioTracks.count).mov"
let outputFilePath = docsDirect.URLByAppendingPathComponent(videoName)
let assetExport = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality)
assetExport!.outputFileType = AVFileTypeQuickTimeMovie
assetExport!.outputURL = outputFilePath!
assetExport?.exportAsynchronouslyWithCompletionHandler({
dispatch_async(dispatch_get_main_queue()){
print("finished exporting \(outputFilePath)")
print("status \(assetExport?.status)")
print("error \(assetExport?.error)")
SVProgressHUD.dismiss()
}
})
}
And the code i get :
error Optional(Error Domain=NSURLErrorDomain Code=-1 "unknown error" UserInfo={NSLocalizedDescription=unknown error, NSUnderlyingError=0x170056140 {Error Domain=NSOSStatusErrorDomain Code=-12935 "(null)"}})
Swift: 3
first merge N audio tracks
var mergeAudioURL = NSURL()
func mergeAudioFiles(audioFileUrls: NSArray) {
let composition = AVMutableComposition()
for i in 0 ..< audioFileUrls.count {
let compositionAudioTrack :AVMutableCompositionTrack = composition.addMutableTrack(withMediaType: AVMediaTypeAudio, preferredTrackID: CMPersistentTrackID())
let asset = AVURLAsset(url: (audioFileUrls[i] as! NSURL) as URL)
let track = asset.tracks(withMediaType: AVMediaTypeAudio)[0]
let timeRange = CMTimeRange(start: CMTimeMake(0, 600), duration: track.timeRange.duration)
try! compositionAudioTrack.insertTimeRange(timeRange, of: track, at: composition.duration)
}
let documentDirectoryURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first! as NSURL
self.mergeAudioURL = documentDirectoryURL.appendingPathComponent("Merge Audio.m4a")! as URL as NSURL
let assetExport = AVAssetExportSession(asset: composition, presetName: AVAssetExportPresetAppleM4A)
assetExport?.outputFileType = AVFileTypeAppleM4A
assetExport?.outputURL = mergeAudioURL as URL
removeFileAtURLIfExists(url: mergeAudioURL)
assetExport?.exportAsynchronously(completionHandler:
{
switch assetExport!.status
{
case AVAssetExportSessionStatus.failed:
print("failed \(assetExport?.error)")
case AVAssetExportSessionStatus.cancelled:
print("cancelled \(assetExport?.error)")
case AVAssetExportSessionStatus.unknown:
print("unknown\(assetExport?.error)")
case AVAssetExportSessionStatus.waiting:
print("waiting\(assetExport?.error)")
case AVAssetExportSessionStatus.exporting:
print("exporting\(assetExport?.error)")
default:
print("-----Merge audio exportation complete.\(self.mergeAudioURL)")
}
})
}
then merge audio with video
var mergedAudioVideoURl = NSURL()
func mergeMutableVideoWithAudio(videoUrl:NSURL, audioUrl:NSURL){
let mixComposition : AVMutableComposition = AVMutableComposition()
var mutableCompositionVideoTrack : [AVMutableCompositionTrack] = []
var mutableCompositionAudioTrack : [AVMutableCompositionTrack] = []
let totalVideoCompositionInstruction : AVMutableVideoCompositionInstruction = AVMutableVideoCompositionInstruction()
//start merge
let aVideoAsset : AVAsset = AVAsset(url: videoUrl as URL)
let aAudioAsset : AVAsset = AVAsset(url: audioUrl as URL)
mutableCompositionVideoTrack.append(mixComposition.addMutableTrack(withMediaType: AVMediaTypeVideo, preferredTrackID: kCMPersistentTrackID_Invalid))
mutableCompositionAudioTrack.append( mixComposition.addMutableTrack(withMediaType: AVMediaTypeAudio, preferredTrackID: kCMPersistentTrackID_Invalid))
let aVideoAssetTrack : AVAssetTrack = aVideoAsset.tracks(withMediaType: AVMediaTypeVideo)[0]
let aAudioAssetTrack : AVAssetTrack = aAudioAsset.tracks(withMediaType: AVMediaTypeAudio)[0]
do{
try mutableCompositionVideoTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), of: aVideoAssetTrack, at: kCMTimeZero)
try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, aVideoAssetTrack.timeRange.duration), of: aAudioAssetTrack, at: kCMTimeZero)
}catch{
}
totalVideoCompositionInstruction.timeRange = CMTimeRangeMake(kCMTimeZero,aVideoAssetTrack.timeRange.duration )
let mutableVideoComposition : AVMutableVideoComposition = AVMutableVideoComposition()
mutableVideoComposition.frameDuration = CMTimeMake(1, 30)
mutableVideoComposition.renderSize = CGSize(width: 1280, height: 720)
mergedAudioVideoURl = NSURL(fileURLWithPath: NSHomeDirectory() + "/Documents/FinalVideo.mp4")
let assetExport: AVAssetExportSession = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality)!
assetExport.outputFileType = AVFileTypeMPEG4
assetExport.outputURL = mergedAudioVideoURl as URL
removeFileAtURLIfExists(url: mergedAudioVideoURl)
assetExport.shouldOptimizeForNetworkUse = true
assetExport.exportAsynchronously { () -> Void in
switch assetExport.status {
case AVAssetExportSessionStatus.completed:
print("-----Merge mutable video with trimmed audio exportation complete.\(self.mergedAudioVideoURl)")
case AVAssetExportSessionStatus.failed:
print("failed \(assetExport.error)")
case AVAssetExportSessionStatus.cancelled:
print("cancelled \(assetExport.error)")
default:
print("complete")
}
}
}
func removeFileAtURLIfExists(url: NSURL) {
if let filePath = url.path {
let fileManager = FileManager.default
if fileManager.fileExists(atPath: filePath) {
do{
try fileManager.removeItem(atPath: filePath)
} catch let error as NSError {
print("-----Couldn't remove existing destination file: \(error)")
}
}
}
}
I try to mix a video record with an audio file from the iPod library of the device.
I want to set the volume of each audio (the audio of the video and the audio file).
I try to use AVMutableAudioMixInputParameters object with the method setVolume().
I don't have any problem with the volume of the video, but the volume of the audio file on the final record is always set at max. I tried to change the audio file for testing using a video and take only the audio track of this video, and that works fine.
import UIKit
import AVFoundation
class AVTools: NSObject {
/**
volume: between 1.0 and 0.0
*/
class func mergeVideoAndMusicWithVolume(videoURL: NSURL, audioURL: NSURL, startAudioTime: Float64, volumeVideo: Float, volumeAudio: Float, complete: (NSURL?) -> Void) -> Void {
//The goal is merging a video and a music from iPod library, and set it a volume
//Get the path of App Document Directory
let dirPaths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
let docsDir = dirPaths[0] as String
//Create Asset from record and music
let assetVideo: AVURLAsset = AVURLAsset(URL: videoURL)
let assetMusic: AVURLAsset = AVURLAsset(URL: audioURL)
let composition: AVMutableComposition = AVMutableComposition()
let compositionVideo: AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeVideo, preferredTrackID: CMPersistentTrackID())
let compositionAudioVideo: AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeAudio, preferredTrackID: CMPersistentTrackID())
let compositionAudioMusic: AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeAudio, preferredTrackID: CMPersistentTrackID())
//Add video to the final record
do {
try compositionVideo.insertTimeRange(CMTimeRangeMake(kCMTimeZero, assetVideo.duration), ofTrack: assetVideo.tracksWithMediaType(AVMediaTypeVideo)[0], atTime: kCMTimeZero)
} catch _ {
}
//Extract audio from the video and the music
let audioMix: AVMutableAudioMix = AVMutableAudioMix()
var audioMixParam: [AVMutableAudioMixInputParameters] = []
let assetVideoTrack: AVAssetTrack = assetVideo.tracksWithMediaType(AVMediaTypeAudio)[0]
let assetMusicTrack: AVAssetTrack = assetMusic.tracksWithMediaType(AVMediaTypeAudio)[0]
let videoParam: AVMutableAudioMixInputParameters = AVMutableAudioMixInputParameters(track: assetVideoTrack)
videoParam.trackID = assetVideoTrack.trackID
let musicParam: AVMutableAudioMixInputParameters = AVMutableAudioMixInputParameters(track: assetMusicTrack)
musicParam.trackID = assetMusicTrack.trackID
//Set final volume of the audio record and the music
videoParam.setVolume(volumeVideo, atTime: kCMTimeZero)
musicParam.setVolume(volumeAudio, atTime: kCMTimeZero) // <----- This doesn't work on audio file
//Add setting
audioMixParam.append(musicParam)
audioMixParam.append(videoParam)
//Add audio on final record
//First: the audio of the record and Second: the music
do {
try compositionAudioVideo.insertTimeRange(CMTimeRangeMake(kCMTimeZero, assetVideo.duration), ofTrack: assetVideoTrack, atTime: kCMTimeZero)
} catch _ {
assertionFailure()
}
do {
try compositionAudioMusic.insertTimeRange(CMTimeRangeMake(CMTimeMake(Int64(startAudioTime * 10000), 10000), assetVideo.duration), ofTrack: assetMusicTrack, atTime: kCMTimeZero)
} catch _ {
assertionFailure()
}
//Add parameter
audioMix.inputParameters = audioMixParam
//Remove the previous temp video if exist
let filemgr = NSFileManager.defaultManager()
do {
if filemgr.fileExistsAtPath("\(docsDir)/movie-merge-music.mov") {
try filemgr.removeItemAtPath("\(docsDir)/movie-merge-music.mov")
} else {
}
} catch _ {
}
//Exporte the final record’
let completeMovie = "\(docsDir)/movie-merge-music.mov"
let completeMovieUrl = NSURL(fileURLWithPath: completeMovie)
let exporter: AVAssetExportSession = AVAssetExportSession(asset: composition, presetName: AVAssetExportPresetHighestQuality)!
exporter.outputURL = completeMovieUrl
exporter.outputFileType = AVFileTypeMPEG4
exporter.audioMix = audioMix
exporter.exportAsynchronouslyWithCompletionHandler({
switch exporter.status{
case AVAssetExportSessionStatus.Failed:
print("failed \(exporter.error)")
complete(nil)
case AVAssetExportSessionStatus.Cancelled:
print("cancelled \(exporter.error)")
complete(nil)
default:
print("complete")
complete(completeMovieUrl)
}
})
}
}
Ok I've find the problem.
The problem is I assign the trackID of the asset and not the trackID of the composition.
For fix it, just replace:
let videoParam: AVMutableAudioMixInputParameters = AVMutableAudioMixInputParameters(track: assetVideoTrack)
videoParam.trackID = assetVideoTrack.trackID
let musicParam: AVMutableAudioMixInputParameters = AVMutableAudioMixInputParameters(track: assetMusicTrack)
musicParam.trackID = assetMusicTrack.trackID
to:
let videoParam: AVMutableAudioMixInputParameters = AVMutableAudioMixInputParameters(track: assetVideoTrack)
videoParam.trackID = compositionAudioVideo.trackID
let musicParam: AVMutableAudioMixInputParameters = AVMutableAudioMixInputParameters(track: assetMusicTrack)
musicParam.trackID = compositionAudioMusic.trackID
the final result:
/**
volume: between 1.0 and 0.0
*/
class func mergeVideoAndMusicWithVolume(videoURL: NSURL, audioURL: NSURL, startAudioTime: Float64, volumeVideo: Float, volumeAudio: Float, complete: (NSURL?) -> Void) -> Void {
//The goal is merging a video and a music from iPod library, and set it a volume
//Get the path of App Document Directory
let dirPaths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
let docsDir = dirPaths[0] as String
//Create Asset from record and music
let assetVideo: AVURLAsset = AVURLAsset(URL: videoURL)
let assetMusic: AVURLAsset = AVURLAsset(URL: audioURL)
let composition: AVMutableComposition = AVMutableComposition()
let compositionVideo: AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeVideo, preferredTrackID: CMPersistentTrackID())
let compositionAudioVideo: AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeAudio, preferredTrackID: CMPersistentTrackID())
let compositionAudioMusic: AVMutableCompositionTrack = composition.addMutableTrackWithMediaType(AVMediaTypeAudio, preferredTrackID: CMPersistentTrackID())
//Add video to the final record
do {
try compositionVideo.insertTimeRange(CMTimeRangeMake(kCMTimeZero, assetVideo.duration), ofTrack: assetVideo.tracksWithMediaType(AVMediaTypeVideo)[0], atTime: kCMTimeZero)
} catch _ {
}
//Extract audio from the video and the music
let audioMix: AVMutableAudioMix = AVMutableAudioMix()
var audioMixParam: [AVMutableAudioMixInputParameters] = []
let assetVideoTrack: AVAssetTrack = assetVideo.tracksWithMediaType(AVMediaTypeAudio)[0]
let assetMusicTrack: AVAssetTrack = assetMusic.tracksWithMediaType(AVMediaTypeAudio)[0]
let videoParam: AVMutableAudioMixInputParameters = AVMutableAudioMixInputParameters(track: assetVideoTrack)
videoParam.trackID = compositionAudioVideo.trackID
let musicParam: AVMutableAudioMixInputParameters = AVMutableAudioMixInputParameters(track: assetMusicTrack)
musicParam.trackID = compositionAudioMusic.trackID
//Set final volume of the audio record and the music
videoParam.setVolume(volumeVideo, atTime: kCMTimeZero)
musicParam.setVolume(volumeAudio, atTime: kCMTimeZero)
//Add setting
audioMixParam.append(musicParam)
audioMixParam.append(videoParam)
//Add audio on final record
//First: the audio of the record and Second: the music
do {
try compositionAudioVideo.insertTimeRange(CMTimeRangeMake(kCMTimeZero, assetVideo.duration), ofTrack: assetVideoTrack, atTime: kCMTimeZero)
} catch _ {
assertionFailure()
}
do {
try compositionAudioMusic.insertTimeRange(CMTimeRangeMake(CMTimeMake(Int64(startAudioTime * 10000), 10000), assetVideo.duration), ofTrack: assetMusicTrack, atTime: kCMTimeZero)
} catch _ {
assertionFailure()
}
//Add parameter
audioMix.inputParameters = audioMixParam
//Remove the previous temp video if exist
let filemgr = NSFileManager.defaultManager()
do {
if filemgr.fileExistsAtPath("\(docsDir)/movie-merge-music.mov") {
try filemgr.removeItemAtPath("\(docsDir)/movie-merge-music.mov")
} else {
}
} catch _ {
}
//Exporte the final record’
let completeMovie = "\(docsDir)/movie-merge-music.mov"
let completeMovieUrl = NSURL(fileURLWithPath: completeMovie)
let exporter: AVAssetExportSession = AVAssetExportSession(asset: composition, presetName: AVAssetExportPresetHighestQuality)!
exporter.outputURL = completeMovieUrl
exporter.outputFileType = AVFileTypeMPEG4
exporter.audioMix = audioMix
exporter.exportAsynchronouslyWithCompletionHandler({
switch exporter.status{
case AVAssetExportSessionStatus.Failed:
print("failed \(exporter.error)")
complete(nil)
case AVAssetExportSessionStatus.Cancelled:
print("cancelled \(exporter.error)")
complete(nil)
default:
print("complete")
complete(completeMovieUrl)
}
})
}