在Swift中使用Arkit识别图像时，如何播放本地视频？

我使用AR套件进行图像识别，当检测到图像时，我需要在当前场景中显示和播放视频（如检测到的图像上方）

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看看你的代码，首先你要把你的

SCNPlane

设置为638米宽，356米高，我相信这不是你真正想要的

无论如何，这里有一个使用

SKScene

和

SKVideoNode

播放本地视频的示例，该示例运行良好：

//--------------------------
// MARK: - ARSCNViewDelegate
//--------------------------

extension ViewController: ARSCNViewDelegate {

    func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {

        //1. Check We Have An ARImageAnchor And Have Detected Our Reference Image
        guard let imageAnchor = anchor as? ARImageAnchor else { return }

        let referenceImage = imageAnchor.referenceImage

        //2. Get The Physical Width & Height Of Our Reference Image
        let width = CGFloat(referenceImage.physicalSize.width)
        let height = CGFloat(referenceImage.physicalSize.height)

        //3. Create An SCNNode To Hold Our Video Player With The Same Size As The Image Target
        let videoHolder = SCNNode()
        let videoHolderGeometry = SCNPlane(width: width, height: height)
        videoHolder.transform = SCNMatrix4MakeRotation(-Float.pi / 2, 1, 0, 0)
        videoHolder.geometry = videoHolderGeometry

        //4. Create Our Video Player
        if let videoURL = Bundle.main.url(forResource: "BlackMirrorz", withExtension: "mp4"){

            setupVideoOnNode(videoHolder, fromURL: videoURL)
        }

        //5. Add It To The Hierarchy
        node.addChildNode(videoHolder)
    }

    /// Creates A Video Player As An SCNGeometries Diffuse Contents
    ///
    /// - Parameters:
    ///   - node: SCNNode
    ///   - url: URL
    func setupVideoOnNode(_ node: SCNNode, fromURL url: URL){

        //1. Create An SKVideoNode
        var videoPlayerNode: SKVideoNode!

        //2. Create An AVPlayer With Our Video URL
        let videoPlayer = AVPlayer(url: url)

        //3. Intialize The Video Node With Our Video Player
        videoPlayerNode = SKVideoNode(avPlayer: videoPlayer)
        videoPlayerNode.yScale = -1

        //4. Create A SpriteKitScene & Postion It
        let spriteKitScene = SKScene(size: CGSize(width: 600, height: 300))
        spriteKitScene.scaleMode = .aspectFit
        videoPlayerNode.position = CGPoint(x: spriteKitScene.size.width/2, y: spriteKitScene.size.height/2)
        videoPlayerNode.size = spriteKitScene.size
        spriteKitScene.addChild(videoPlayerNode)

        //6. Set The Nodes Geoemtry Diffuse Contenets To Our SpriteKit Scene
        node.geometry?.firstMaterial?.diffuse.contents = spriteKitScene

        //5. Play The Video
        videoPlayerNode.play()
        videoPlayer.volume = 0

    }
}

更新：

如果要将视频放置在目标上方，可以执行以下操作：

  func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {

        //1. Check We Have An ARImageAnchor And Have Detected Our Reference Image
        guard let imageAnchor = anchor as? ARImageAnchor else { return }


        let referenceImage = imageAnchor.referenceImage

        //2. Get The Physical Width & Height Of Our Reference Image
        let width = CGFloat(referenceImage.physicalSize.width)
        let height = CGFloat(referenceImage.physicalSize.height)

        //3. Create An SCNNode To Hold Our Video Player
        let videoHolder = SCNNode()
        let planeHeight = height/2
        let videoHolderGeometry = SCNPlane(width: width, height: planeHeight)
        videoHolder.transform = SCNMatrix4MakeRotation(-Float.pi / 2, 1, 0, 0)
        videoHolder.geometry = videoHolderGeometry

        //4. Place It About The Target
        let zPosition = height - (planeHeight/2)
        videoHolder.position = SCNVector3(0, 0, -zPosition)

        //5. Create Our Video Player
        if let videoURL = Bundle.main.url(forResource: "BlackMirrorz", withExtension: "mp4"){

            setupVideoOnNode(videoHolder, fromURL: videoURL)
        }

        //5. Add It To The Hierachy
        node.addChildNode(videoHolder)
    }

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希望有帮助……

请展示您的代码，以及您尝试过的内容。请将代码粘贴为文本，不要发布屏幕截图。这里有很多代码似乎与问题无关，并且没有明确指示您试图解决的具体问题。看，哈哈。您已经发布了视图控制文件的正确代码。试着调试一下。我应该在哪里接受答案，实际上我还没有在我的帐户中找到答案？你能告诉我应该在哪里接受吗@乔希

  func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {

        //1. Check We Have An ARImageAnchor And Have Detected Our Reference Image
        guard let imageAnchor = anchor as? ARImageAnchor else { return }


        let referenceImage = imageAnchor.referenceImage

        //2. Get The Physical Width & Height Of Our Reference Image
        let width = CGFloat(referenceImage.physicalSize.width)
        let height = CGFloat(referenceImage.physicalSize.height)

        //3. Create An SCNNode To Hold Our Video Player
        let videoHolder = SCNNode()
        let planeHeight = height/2
        let videoHolderGeometry = SCNPlane(width: width, height: planeHeight)
        videoHolder.transform = SCNMatrix4MakeRotation(-Float.pi / 2, 1, 0, 0)
        videoHolder.geometry = videoHolderGeometry

        //4. Place It About The Target
        let zPosition = height - (planeHeight/2)
        videoHolder.position = SCNVector3(0, 0, -zPosition)

        //5. Create Our Video Player
        if let videoURL = Bundle.main.url(forResource: "BlackMirrorz", withExtension: "mp4"){

            setupVideoOnNode(videoHolder, fromURL: videoURL)
        }

        //5. Add It To The Hierachy
        node.addChildNode(videoHolder)
    }