readAsArrayBuffer 返回空数组（尝试将视频转换为 blob 并上传）

Question

我正在尝试使用 Ionic/Capacitor/React 上传视频。

为此，我使用了 cordova-video-capture-plus 插件。

我在尝试 readAsArrayBuffer 时卡住了。出于某种原因，它总是空着回来，在我的代码下面：

const doMediaCapture = async () => {
let options: VideoCapturePlusOptions = { limit: 1, duration: 30 };
let capture:any = await VideoCapturePlus.captureVideo(options);
let media = capture[0] as MediaFile;
// works on android....
let resolvedPath: DirectoryEntry;
let path = media.fullPath.substring(0, media.fullPath.lastIndexOf("/"));
if (Capacitor.getPlatform() === "ios") {
  console.log("ios")
  resolvedPath = await File.resolveDirectoryUrl("file://" + path);
} else {
  console.log("android")
  resolvedPath = await File.resolveDirectoryUrl(path);
}

console.log(media)
console.log(resolvedPath)
 File.readAsArrayBuffer(resolvedPath.nativeURL, media.name).then(
  (buffer: any) => {
    console.log(buffer)
    // get the buffer and make a blob to be saved
    let videoBlob: Blob = new Blob([buffer], {
      type: media.type,
    });
    let url = window.URL.createObjectURL(videoBlob);
    
    console.log(videoBlob)
    let { jobId } = apartments[+id!];
    if (videoBlob instanceof Blob) {
      console.log("processing as File");
      let fName = `${new Date().getTime()}`;

      if (videoBlob instanceof Blob) {
        if (videoBlob.type.split("/")[1] === "quicktime") {
          fName = fName + ".mov";
        } else {
          fName = fName + "." + videoBlob.type.split("/")[1];
        }
      }
      let ref = "videos/" + fName
      uploadVideo(jobId, videoBlob, ref)
    } else {
      console.log("processing as DataAsDataUrl");
      let v = videoBlob as DataAsDataUrl;
      let fName = `${new Date().getTime()}.${v.format}`;
      let ref = "images/" + fName
      uploadVideo(jobId, videoBlob, ref)
    }
  },
  (error:any) => console.log(error)
);

};

我得到以下输出，它是一个空数组，因此如果我尝试上传它，它不会上传任何东西：

如何将该视频文件转换为 blob 以上传？

Answer 1

requestLegacyExternalStorage - 这在 AndroidManifest 中设置正确吗？ https://medium.com/androiddevelopers/modern-user-storage-on-android-e9469e8624f9

Answer 2

解决方案是停止使用 video-capture-plus 插件，因为它似乎与不同的手机存在兼容性问题。我继续使用本地插件媒体捕获及其方法 MediaCapture.captureVideo()

安装以下插件： "@ionic-native/media-capture": "^5.24.0" 和它的 Cordova 对应物： “cordova-plugin-media-capture”：“^3.0.3”，

readAsArrayBuffer 返回空数组（尝试将视频转换为 blob 并上传）

readAsArrayBuffer returning empty array (trying to convert video to blob and upload it)

javascript

arrays

reactjs

ionic-framework

arraybuffer