Convert mov format video file to mp4 video in Swift - ios

Question

A flutter application that I developed uploads videos to the server, iOS devices upload videos in the mov format, which the Edge browser does not support to play. I attempted to use swift code to convert the mov file to mp4. I'm receiving an error after referring to a code snippet.. By the way, I'm a beginner with Swift
Error : Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Unsupported value for standard codec'
let myArgs = args as? [String: Any]
let movpath = myArgs?["movpath"] as? String
let mp4Path = myArgs?["mp4path"] as? String
let movurl = URL(fileURLWithPath: movpath!)
let mp4url = URL(fileURLWithPath: mp4Path!)
let avAsset = AVURLAsset(url: movurl, options: nil)
//Create Export session
let exportSession = AVAssetExportSession(asset: avAsset, presetName: AVAssetExportPresetPassthrough)
// exportSession = AVAssetExportSession(asset: composition, presetName: mp4Quality)
exportSession!.outputURL = mp4url
exportSession!.outputFileType = AVFileType.mp4
exportSession!.shouldOptimizeForNetworkUse = true
var start = CMTimeMakeWithSeconds(0.0,preferredTimescale: 0)
var range = CMTimeRangeMake(start:start, duration: avAsset.duration)
exportSession!.timeRange = range
exportSession!.exportAsynchronously {
result(exportSession!.outputURL)
}

Answer 1

You can refer to the code below
func encodeVideo(at videoURL: URL, completionHandler: ((URL?, Error?) -> Void)?) {
let avAsset = AVURLAsset(url: videoURL, options: nil)
let startDate = Date()
//Create Export session
guard let exportSession = AVAssetExportSession(asset: avAsset, presetName: AVAssetExportPresetPassthrough) else {
completionHandler?(nil, nil)
return
}
//Creating temp path to save the converted video
let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0] as URL
let filePath = documentsDirectory.appendingPathComponent("rendered-Video.mp4")
//Check if the file already exists then remove the previous file
if FileManager.default.fileExists(atPath: filePath.path) {
do {
try FileManager.default.removeItem(at: filePath)
} catch {
completionHandler?(nil, error)
}
}
exportSession.outputURL = filePath
exportSession.outputFileType = AVFileType.mp4
exportSession.shouldOptimizeForNetworkUse = true
let start = CMTimeMakeWithSeconds(0.0, 0)
let range = CMTimeRangeMake(start, avAsset.duration)
exportSession.timeRange = range
exportSession.exportAsynchronously(completionHandler: {() -> Void in
switch exportSession.status {
case .failed:
print(exportSession.error ?? "NO ERROR")
completionHandler?(nil, exportSession.error)
case .cancelled:
print("Export canceled")
completionHandler?(nil, nil)
case .completed:
//Video conversion finished
let endDate = Date()
let time = endDate.timeIntervalSince(startDate)
print(time)
print("Successful!")
print(exportSession.outputURL ?? "NO OUTPUT URL")
completionHandler?(exportSession.outputURL, nil)
default: break
}
})
}