swift - RealityKit 中的 ARVideoNode

Question

我正在试验 Open AI 的 ChatGPT，当被要求提供一个代码，用于在跟踪引用图像时在 RealityKit 的 AR 场景中播放视频，它使用 ARVideoNode 而不是我预期的 AVPlayer 和 VideoMaterial 解决方案。当我问到为什么 ARVideoNode 在 VideoMaterial 上比 AVPlayer 更好时，它甚至给了我一个答案，但我从未听说过 ARVideoNode 在 RealityKit 中。

我是不是遗漏了什么，或者这只是 AI 的一个缺陷？

import RealityKit

// Set up image tracking
let configuration = ARImageTrackingConfiguration()
configuration.detectionImages = ["reference-image-1", "reference-image-2"]
arView.session.run(configuration)

// Create a dictionary to map reference image names to video file names
let videoFileNames = ["reference-image-1": "video-1.mp4", 
                      "reference-image-2": "video-2.mp4"]

// Track the reference images and display the corresponding 
// videos on top of them
var videoNodes = [String: ARVideoNode]()
arView.scene.subscribe(to: ARImageAnchor.self) { (anchor: ARImageAnchor) in
    // Get the video file name for the tracked image
    guard let videoFileName = videoFileNames[anchor.name] else { return }

    // Load the video file
    let videoURL = URL(fileURLWithPath: "path/to/\(videoFileName)")
    let videoAsset = VideoAsset(url: videoURL)

    // Create an ARVideoNode and add it to the scene
    let videoNode = ARVideoNode(asset: videoAsset)
    arView.scene.anchors.append(videoNode)
    videoNodes[anchor.name] = videoNode

    // Position the video node on top of the image
    videoNode.transform = anchor.transform

    // Play the video
    videoNode.play()
}

// Monitor the tracking status of the reference images 
// and pause/resume the videos as needed
arView.scene.subscribe(to: ARImageAnchor.self) { (anchor: ARImageAnchor) in
    // Get the video node for the tracked image
    guard let videoNode = videoNodes[anchor.name] else { return }

    if anchor.isTracked {
        // Resume playing the video if the image is being tracked
        videoNode.play()
    } else {
        // Pause the video if the image is not being tracked
        videoNode.pause()
    }
}

Answer 1

这不是缺陷，而是 ChatGPT 的错误答案。据我所知，九段的ARVideoNode是用于呈现视频内容的 ARNode 父类的子类。即使在编程语言方面，它也与 RealityKit 无关 - KudanAR SDK native 使用 Objective-C适用于 iOS 和 Java 适用于 Android。

这是 SO temporary policy关于 ChatGPT:

Overall, because the average rate of getting correct answers from ChatGPT is too low, the posting of answers created by ChatGPT is substantially harmful to the site and to users who are asking and looking for correct answers.