有没有办法以编程方式记录IOS屏幕。表示您正在执行的任何活动,例如单击按钮,滚动查看表。
即使播放的视频会与其他活动一起再次播放?
试过这些
但是这些图书馆不会提供高质量的视频。我需要高质量的视频。
问题是,当我在捕捉屏幕时在后台播放视频时,它不会显示流畅的视频。它显示像一帧视频,然后在3-4秒后第二帧,依此类推。视频质量也不好模糊
从iOS 9开始,看起来ReplayKit可以大大简化这一点。
https://developer.apple.com/reference/replaykit
https://code.tutsplus.com/tutorials/ios-9-an-introduction-to-replaykit--cms-25458
更新:由于iOS 11具有内置屏幕录像机,因此可能不太相关,但以下Swift 3代码对我有用:
@IBAction func toggleRecording(_ sender: UIBarButtonItem) {
let r = RPScreenRecorder.shared()
guard r.isAvailable else {
print("ReplayKit unavailable")
return
}
if r.isRecording {
self.stopRecording(sender, r)
}
else {
self.startRecording(sender, r)
}
}
func startRecording(_ sender: UIBarButtonItem, _ r: RPScreenRecorder) {
r.startRecording(handler: { (error: Error?) -> Void in
if error == nil { // Recording has started
sender.title = "Stop"
} else {
// Handle error
print(error?.localizedDescription ?? "Unknown error")
}
})
}
func stopRecording(_ sender: UIBarButtonItem, _ r: RPScreenRecorder) {
r.stopRecording( handler: { previewViewController, error in
sender.title = "Record"
if let pvc = previewViewController {
if UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.pad {
pvc.modalPresentationStyle = UIModalPresentationStyle.popover
pvc.popoverPresentationController?.sourceRect = CGRect.zero
pvc.popoverPresentationController?.sourceView = self.view
}
pvc.previewControllerDelegate = self
self.present(pvc, animated: true, completion: nil)
}
else if let error = error {
print(error.localizedDescription)
}
})
}
// MARK: RPPreviewViewControllerDelegate
func previewControllerDidFinish(_ previewController: RPPreviewViewController) {
previewController.dismiss(animated: true, completion: nil)
}
查看ScreenCaptureView,内置视频录制支持(参见链接)。
这样做是为了将UIView的内容保存到UIImage中。作者建议您可以通过AVCaptureSession传递帧来保存正在使用的应用程序的视频。
我相信它还没有经过OpenGL子视图的测试,但假设它有效,你可以稍微修改它以包含音频,然后你就可以了。
AVCaptureSession示例
import UIKit
import AVFoundation
class ViewController: UIViewController {
let captureSession = AVCaptureSession()
let stillImageOutput = AVCaptureStillImageOutput()
var error: NSError?
override func viewDidLoad() {
super.viewDidLoad()
let devices = AVCaptureDevice.devices().filter{ $0.hasMediaType(AVMediaTypeVideo) && $0.position == AVCaptureDevicePosition.Back }
if let captureDevice = devices.first as? AVCaptureDevice {
captureSession.addInput(AVCaptureDeviceInput(device: captureDevice, error: &error))
captureSession.sessionPreset = AVCaptureSessionPresetPhoto
captureSession.startRunning()
stillImageOutput.outputSettings = [AVVideoCodecKey:AVVideoCodecJPEG]
if captureSession.canAddOutput(stillImageOutput) {
captureSession.addOutput(stillImageOutput)
}
if let previewLayer = AVCaptureVideoPreviewLayer(session: captureSession) {
previewLayer.bounds = view.bounds
previewLayer.position = CGPointMake(view.bounds.midX, view.bounds.midY)
previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
let cameraPreview = UIView(frame: CGRectMake(0.0, 0.0, view.bounds.size.width, view.bounds.size.height))
cameraPreview.layer.addSublayer(previewLayer)
cameraPreview.addGestureRecognizer(UITapGestureRecognizer(target: self, action:"saveToCamera:"))
view.addSubview(cameraPreview)
}
}
}
func saveToCamera(sender: UITapGestureRecognizer) {
if let videoConnection = stillImageOutput.connectionWithMediaType(AVMediaTypeVideo) {
stillImageOutput.captureStillImageAsynchronouslyFromConnection(videoConnection) {
(imageDataSampleBuffer, error) -> Void in
let imageData = AVCaptureStillImageOutput.jpegStillImageNSDataRepresentation(imageDataSampleBuffer)
UIImageWriteToSavedPhotosAlbum(UIImage(data: imageData), nil, nil, nil)
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
ReplayKit可用,虽然你不允许访问结果视频,我到目前为止找到的唯一方法是制作一些截图(将它们存储在图像数组中),然后将这些图像转换为视频,而不是非常从性能的角度来看效率很高,但是当你真的不需要30/60 fps的屏幕录制时可能会有效,并且可能没有6-20 pfs。这是the full example。
您可以使用此库来记录视图:在Objective C中用GitHub提供的screen-cap-view。
**And to use it in swift:**
--> Drag and drop the .m and .h files in your xcode project.
--> Make a header file and import the this file in that : *#import "IAScreenCaptureView.h"*
--> Then give a View this class from the PropertyInspector and then make a IBOutlet for that view . Something like this:
*@IBOutlet weak var contentView: IAScreenCaptureView!*
--> Then Finally just simply start and stop the recording of the view where ever and when ever you want and for that the code will be like this :
For Starting the Recording : *contentView.startRecording()*
For Stoping the Recording : *contentView.stopRecording()*
//Hope this helps.Happy coding. \o/ , ¯\_(ツ)_/¯ ,(╯°□°)╯︵ ┻━┻