Javascript 将AVVideoComposition初始值设定项转换为Nativescript

正在寻找有关将此objective-c类方法移植到JS/nativescript的帮助。。我尝试过的每一个变体都会导致一个类型错误：undefined不是一个函数

我试着用JS将其写成：

const videoComp=AVVideoComposition.alloc.initWithAssetApplyingCifilterWithHandlerAsset，请求=>{…}； //或 const videoComp=AVVideoComposition.alloc.initAssetApplyingCifilterWithHandlerAsset，请求=>{…}； //或 const videoComp=AVVideoComposition.alloc.initAssetApplyingCifilterWithHandlerApplicationSet，请求=>{…}； //或 const videoComp=新的AVVideoCompositionasset，请求=>{…}； 举几个例子。实际上，我正在尝试将此代码移植到nativescript/JS：

let blurRadius = 6.0
let asset = AVAsset(url: streamURL)
let item = AVPlayerItem(asset: asset)
item.videoComposition= AVVideoComposition(asset: asset) { request in
    let blurred = request.sourceImage.clampedToExtent().applyingGaussianBlur(sigma: blurRadius)
    let output = blurred.clampedToRect(request.sourceImage.extent)
    request.finish(with: output, context: nil)
}

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在这篇博文中可以找到：

它在JavaScript/Typescript中应该是这样的

let blurRadius = 6.0;
let asset = AVAsset.assetWithURL(streamURL);
let item = AVPlayerItem.alloc().initWithAsset(asset);
item.videoComposition = AVVideoComposition.videoCompositionWithAssetApplyingCIFiltersWithHandler(asset, request => {
    let blurred = request.sourceImage.imageByClampingToExtent().imageByApplyingGaussianBlurWithSigma(blurRadius);
    let output = blurred.imageByClampingToRect(request.sourceImage.extent);
    request.finishWithImageContext(output, null);
});

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注意：代码未经测试，只是给定本机代码的翻译。利用智能感知支持。

这看起来很有效，谢谢！我犯的主要错误似乎是在转换API时遵循了苹果的Swift文档，而不是nativescript支持的Objective-C文档。