Kervon Ryan
Reputation: 684
Save Video Using AVFoundation Swift
Hi I followed a course by Jared Davidson to create a custom camera view and save pictures using AVFoundation. https://www.youtube.com/watch?v=w0O3ZGUS3pk
However I would like to record and save videos instead of images. Can someone help me here? I'm sure its simple but apple's Documentation is written in Objective-C and I cant decipher it.
This is my code. Thanks.
import UIKit
import AVFoundation
class ViewController: UIViewController {
var captureSession = AVCaptureSession()
var sessionOutput = AVCaptureStillImageOutput()
var previewLayer = AVCaptureVideoPreviewLayer()
@IBOutlet var cameraView: UIView!
override func viewWillAppear(animated: Bool) {
let devices = AVCaptureDevice.devicesWithMediaType(AVMediaTypeVideo)
for device in devices {
if device.position == AVCaptureDevicePosition.Front{
do{
let input = try AVCaptureDeviceInput(device: device as! AVCaptureDevice)
if captureSession.canAddInput(input){
captureSession.addInput(input)
sessionOutput.outputSettings = [AVVideoCodecKey : AVVideoCodecJPEG]
if captureSession.canAddOutput(sessionOutput){
captureSession.addOutput(sessionOutput)
captureSession.startRunning()
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
previewLayer.connection.videoOrientation = AVCaptureVideoOrientation.Portrait
cameraView.layer.addSublayer(previewLayer)
previewLayer.position = CGPoint(x: self.cameraView.frame.width / 2, y: self.cameraView.frame.height / 2)
previewLayer.bounds = cameraView.frame
}
}
}
catch{
print("Error")
}
}
}
}
@IBAction func TakePhoto(sender: AnyObject) {
if let videoConnection = sessionOutput.connectionWithMediaType(AVMediaTypeVideo){
sessionOutput.captureStillImageAsynchronouslyFromConnection(videoConnection, completionHandler: {
buffer, error in
let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(buffer)
UIImageWriteToSavedPhotosAlbum(UIImage(data: imageData)!, nil, nil, nil)
})
}
}
}
Upvotes: 18
Views: 13820
Answers (7)
ingconti
Reputation: 11666
only a minor note for people having delegate not called: (I Am under Xcode 12.x / iOS 14.5)
Suppose You have a f. that opens local dest. URL (the code from previous sample... Documents dir..)
If You do:
DispatchQueue.global(qos: .userInitiated).async { //[weak self] in
self.captureSession.startRunning()
self.addDest()
}
it works,
but If You exchange:
DispatchQueue.global(qos: .userInitiated).async { //[weak self] in
**self.addDest()**
self.captureSession.startRunning()
}
delegate is NOT CALLED.
the "startRunning" is called after you set output:
if captureSession.canAddInput(input!) && captureSession.canAddOutput(stillImageOutput) {
captureSession.addInput(input!)
captureSession.addOutput(stillImageOutput)
setupLivePreview()
self.videoPreviewLayer.frame = self.previewView.bounds
if addVideoOutput(){
DispatchQueue.global(qos: .userInitiated).async { //[weak self] in
self.captureSession.startRunning()
self.addDest()
}
}
...
where
func addVideoOutput() -> Bool{
movieOutput = AVCaptureMovieFileOutput()
if captureSession.canAddOutput(movieOutput){
captureSession.addOutput(movieOutput)
return true
}
return false
}
Upvotes: 0
Ranjan
Reputation: 95
func getCurrentFrame(url:String) -> UIImage? {
let asset = AVAsset(url: URL(string: url)!)
let assetImgGenerate = AVAssetImageGenerator(asset: asset)
assetImgGenerate.appliesPreferredTrackTransform = true
//Can set this to improve performance if target size is known before hand
//assetImgGenerate.maximumSize = CGSize(width,height)
let time = CMTimeMakeWithSeconds(1.0, preferredTimescale: 600)
do {
let img = try assetImgGenerate.copyCGImage(at: time, actualTime: nil)
let thumbnail = UIImage(cgImage: img)
return thumbnail
} catch {
print(error.localizedDescription)
return nil
}
}
Upvotes: 0
Steve Graff
Reputation: 308
Thank you for this. It was very helpful to me. Here is a version of Rhythmic Fistman's answer ported to Swift 3 with the required import statements and delegate methods.
import UIKit
import AVFoundation
class ViewController: UIViewController,
AVCaptureFileOutputRecordingDelegate {
var captureSession = AVCaptureSession()
var sessionOutput = AVCaptureStillImageOutput()
var movieOutput = AVCaptureMovieFileOutput()
var previewLayer = AVCaptureVideoPreviewLayer()
@IBOutlet var cameraView: UIView!
override func viewWillAppear(_ animated: Bool) {
self.cameraView = self.view
let devices = AVCaptureDevice.devices(withMediaType: AVMediaTypeVideo)
for device in devices! {
if (device as AnyObject).position == AVCaptureDevicePosition.front{
do{
let input = try AVCaptureDeviceInput(device: device as! AVCaptureDevice)
if captureSession.canAddInput(input){
captureSession.addInput(input)
sessionOutput.outputSettings = [AVVideoCodecKey : AVVideoCodecJPEG]
if captureSession.canAddOutput(sessionOutput){
captureSession.addOutput(sessionOutput)
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
previewLayer.connection.videoOrientation = AVCaptureVideoOrientation.portrait
cameraView.layer.addSublayer(previewLayer)
previewLayer.position = CGPoint(x: self.cameraView.frame.width / 2, y: self.cameraView.frame.height / 2)
previewLayer.bounds = cameraView.frame
}
captureSession.addOutput(movieOutput)
captureSession.startRunning()
let paths = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)
let fileUrl = paths[0].appendingPathComponent("output.mov")
try? FileManager.default.removeItem(at: fileUrl)
movieOutput.startRecording(toOutputFileURL: fileUrl, recordingDelegate: self)
let delayTime = DispatchTime.now() + 5
DispatchQueue.main.asyncAfter(deadline: delayTime) {
print("stopping")
self.movieOutput.stopRecording()
}
}
}
catch{
print("Error")
}
}
}
}
//MARK: AVCaptureFileOutputRecordingDelegate Methods
func capture(_ captureOutput: AVCaptureFileOutput!, didStartRecordingToOutputFileAt fileURL: URL!, fromConnections connections: [Any]!) {
}
func capture(_ captureOutput: AVCaptureFileOutput!, didFinishRecordingToOutputFileAt outputFileURL: URL!, fromConnections connections: [Any]!, error: Error!) {
print("FINISHED \(error)")
// save video to camera roll
if error == nil {
UISaveVideoAtPathToSavedPhotosAlbum(outputFileURL.path, nil, nil, nil)
}
}
}
Upvotes: 9
Soma Sharma
Reputation: 73
you can use this code to save your videos in the photo library , You have to give the follwing parameters in which the most important is OutputURL.path which is filesystem path to the movie file you want to save to the Camera Roll album , For the rest of the parameters you can either pass there respective values or you can also assign nil that depends on your need
func fileOutput(_ output: AVCaptureFileOutput, didFinishRecordingTo outputFileURL: URL, from connections: [AVCaptureConnection], error: Error?) {
if (error != nil) {
print("Error recording movie: \(error!.localizedDescription)")
} else {
UISaveVideoAtPathToSavedPhotosAlbum(outputFileURL.path, nil, #selector(CameraController.video(_:didFinishSavingWithError:contextInfo:)), nil)
}
outputURL = nil
}
Upvotes: 3
Pamali
Reputation: 11
For the sound recording issue,
Add this code when creating the captureSession
askMicroPhonePermission(completion: { (isMicrophonePermissionGiven) in
if isMicrophonePermissionGiven {
do {
try self.captureSession.addInput(AVCaptureDeviceInput(device: self.captureAudio))
} catch {
print("Error creating the database")
}
}
})
////////////////////////////////////////////////////////////////
askMicroPhonePermission function is as follows
func askMicroPhonePermission(completion: @escaping (_ success: Bool)-> Void) {
switch AVAudioSession.sharedInstance().recordPermission() {
case AVAudioSessionRecordPermission.granted:
completion(true)
case AVAudioSessionRecordPermission.denied:
completion(false) //show alert if required
case AVAudioSessionRecordPermission.undetermined:
AVAudioSession.sharedInstance().requestRecordPermission({ (granted) in
if granted {
completion(true)
} else {
completion(false) // show alert if required
}
})
default:
completion(false)
}
}
And you have to add NSMicrophoneUsageDescription key value in info.plist file.
Upvotes: 0
Biks
Reputation: 105
after if (device as AnyObject).position == AVCaptureDevicePosition.front{
add
// Audio Input
let audioInputDevice = AVCaptureDevice.defaultDevice(withMediaType: AVMediaTypeAudio)
do
{
let audioInput = try AVCaptureDeviceInput(device: audioInputDevice)
// Add Audio Input
if captureSession.canAddInput(audioInput)
{
captureSession.addInput(audioInput)
}
else
{
NSLog("Can't Add Audio Input")
}
}
catch let error
{
NSLog("Error Getting Input Device: \(error)")
}
Thanks
Upvotes: 0
Gordon Childs
Reputation: 36169
You can save record your video to file by creating and adding an AVCaptureMovieFileOutput to your capture session, and making your ViewController conform to the AVCaptureFileOutputRecordingDelegate.
This example records 5 seconds of video to a file called "output.mov" in the app's Documents directory.
class ViewController: UIViewController, AVCaptureFileOutputRecordingDelegate {
var captureSession = AVCaptureSession()
var sessionOutput = AVCaptureStillImageOutput()
var movieOutput = AVCaptureMovieFileOutput()
var previewLayer = AVCaptureVideoPreviewLayer()
@IBOutlet var cameraView: UIView!
override func viewWillAppear(animated: Bool) {
self.cameraView = self.view
let devices = AVCaptureDevice.devicesWithMediaType(AVMediaTypeVideo)
for device in devices {
if device.position == AVCaptureDevicePosition.Front{
do{
let input = try AVCaptureDeviceInput(device: device as! AVCaptureDevice)
if captureSession.canAddInput(input){
captureSession.addInput(input)
sessionOutput.outputSettings = [AVVideoCodecKey : AVVideoCodecJPEG]
if captureSession.canAddOutput(sessionOutput){
captureSession.addOutput(sessionOutput)
previewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
previewLayer.connection.videoOrientation = AVCaptureVideoOrientation.Portrait
cameraView.layer.addSublayer(previewLayer)
previewLayer.position = CGPoint(x: self.cameraView.frame.width / 2, y: self.cameraView.frame.height / 2)
previewLayer.bounds = cameraView.frame
}
captureSession.addOutput(movieOutput)
captureSession.startRunning()
let paths = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)
let fileUrl = paths[0].URLByAppendingPathComponent("output.mov")
try? NSFileManager.defaultManager().removeItemAtURL(fileUrl)
movieOutput.startRecordingToOutputFileURL(fileUrl, recordingDelegate: self)
let delayTime = dispatch_time(DISPATCH_TIME_NOW, Int64(5 * Double(NSEC_PER_SEC)))
dispatch_after(delayTime, dispatch_get_main_queue()) {
print("stopping")
self.movieOutput.stopRecording()
}
}
}
catch{
print("Error")
}
}
}
}
func captureOutput(captureOutput: AVCaptureFileOutput!, didFinishRecordingToOutputFileAtURL outputFileURL: NSURL!, fromConnections connections: [AnyObject]!, error: NSError!) {
print("FINISHED \(error)")
// save video to camera roll
if error == nil {
UISaveVideoAtPathToSavedPhotosAlbum(outputFileURL.path!, nil, nil, nil)
}
}
}
Upvotes: 25
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