Swift - Remove audio from video - ios

Question

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.

Answer 1

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

Answer 2

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)")
}
}
}
}