Live streaming not creating video streaming assets

[MiladNazeri]

Using this as a guide - https://github.com/microsoft/mixed-reality-extension-sdk/blob/master/packages/functional-tests/src/tests/livestream-test.ts

I was trying to get live streaming working with the following code:

this.videoActor = MRE.Actor.Create(this.context, {
            actor: {
                name: "videoActor",
                transform: {
                    app: {
                        position: {x: 0, y: 0, z: 0},
                    },
                    local: {
                        scale: {x: 2, y:2, z:2}
                    }
                }
            }
        });

        this.videoStream = this.assets.createVideoStream("testStream", {
            uri: "youtube://5yx6BWlEVcY",
        });

        this.videoInstance = this.videoActor.startVideoStream(this.videoStream.id, {
            volume: 1.0,
        });

        this.videoInstance.resume();

However, this produces the following error message:

  client Not implemented: CreateAsset of new asset type +0ms
  app Start failed 8a64adb6-2f8a-41ff-b1aa-ebfd090f126c. Error: Creation/Loading of asset testStream failed: Not implemented: CreateAsset of new asset type +863ms
  app SetState failed 8a64adb6-2f8a-41ff-b1aa-ebfd090f126c. Error: Creation/Loading of asset testStream failed: Not implemented: CreateAsset of new asset type +0ms```

Using just a normal mp4 in my public folder worked just fine, but not sure what I'm doing different than what your functional test says.