Question

我想为用户添加一项功能，以记录他们的ARKit体验。我正在使用capturedImage提供的ARFrame session(_ session: ARSession, didUpdate frame: ARFrame)并将其连接成视频。

不幸的是，ARFrame.capturedImage显示了相机捕获的视频帧，但不包含ARKit放置的节点。

有没有办法捕获来自ARSCNView的视频？

我已经尝试了this library，但它有很大的错误（没有阴影，在录制开始时有大的口吃）。我也不想在这个项目中使用ReplayKit。

以下是我使用ARFrame.capturedImage转换为UIImage以及随后的视频。

extension UIImage {
    convenience init(pixelBuffer: CVPixelBuffer) {
        let ciImage = CIImage(cvPixelBuffer: pixelBuffer)
        let size = CGSize(width: CVPixelBufferGetWidth(pixelBuffer), height: CVPixelBufferGetHeight(pixelBuffer))

        let tempContext = CIContext()
        let image = tempContext.createCGImage(ciImage, from: CGRect(origin: CGPoint.zero, size: size))!

        // This assumes we're using an iPhone in portrait.
        self.init(cgImage: image, scale: 1, orientation: .right)
    }
}

Answer 1

我实际上找到了一个库来执行此操作。这是SceneKitVideoRecorder。

我还不完全了解其工作原理，但重要的代码位于SceneKitVideoRecorder.swift。

Answer 2

您可以尝试使用 ReplayKit 。我在AR应用程序中使用ReplayKit来记录何时将模型放置到场景中等等。

试试这个我的代码：

import ReplayKit

class YourController: UIViewController, RPPreviewViewControllerDelegate { 

@IBAction func shotVideo(_ sender: UIButton) {

    print("Video")

    if !isRecording {

        startRecording()

    } else {

        stopRecording()
    }
}

func startRecording() {


    guard recorder.isAvailable else {

        print("The recording isn't available now.")

        return
    }

    recorder.isMicrophoneEnabled = false

    recorder.startRecording{ [unowned self] (error) in

        guard error == nil else {
            print("Trouble with starting this recording.")
            return
        }

        print("Recording started with success.")

        self.isRecording = true

    }

}

func stopRecording() {

    recorder.stopRecording { (preview, error) in

        print("The recording is stopped")

        guard preview != nil else {
            print("The preview controller isn't available.")
            return
        }

        let alert = UIAlertController(title: "End Recording", message: "Want to edit or delete this recording?", preferredStyle: .alert)

        let deleteAction = UIAlertAction(title: "Delete", style: .destructive, handler: { (action: UIAlertAction) in
            self.recorder.discardRecording(handler: { () -> Void in
                print("Recording suffessfully deleted.")
            })
        })

        let editAction = UIAlertAction(title: "Edit", style: .default, handler: { (action: UIAlertAction) -> Void in
            preview?.previewControllerDelegate = self
            self.present(preview!, animated: true, completion: nil)
        })

        alert.addAction(editAction)
        alert.addAction(deleteAction)

        self.present(alert, animated: true, completion: nil)

        self.isRecording = false

    }

}

// RPPreviewViewControllerDelegate

func previewControllerDidFinish(_ previewController: RPPreviewViewController) {
    dismiss(animated: true)
}
}

这是我的代码，我希望我有所帮助:)。

录制来自ARKit的视频

2 个答案: