Blur transitions

Shotstack API
1

Is there any way to create blur transitions?
I would like to achieve something similar to this:

I tried playing with luma matte but couldnt get this

2

We have a default zoom transition but this may not be exactly what you’re looking for.

This appears to require tween control over scale, gaussian blur and maybe opacity. We support tweening for scale and opacity but don’t give much control over any blur effects at this point.

The following uses the zoom transition:

{
  "timeline": {
    "tracks": [
      {
        "clips": [
          {
            "length": 2.41,
            "asset": {
              "type": "video",
              "src": "https://shotstack-ingest-api-v1-sources.s3.ap-southeast-2.amazonaws.com/wzr6y0wtti/zzz01jpn-tr40y-ckr5k-sf5fv-ds3mz8/source.mp4",
              "trim": 3.18
            },
            "start": 0,
            "scale": 1,
            "transition": {
              "out": "zoom"
            }
          }
        ]
      },
      {
        "clips": [
          {
            "length": 2.87,
            "asset": {
              "type": "video",
              "src": "https://shotstack-ingest-api-v1-sources.s3.ap-southeast-2.amazonaws.com/wzr6y0wtti/zzz01jpn-trq8a-wka8k-wwm4e-fvcfw0/source.mp4"
            },
            "start": 1.87,
            "transition": {}
          }
        ]
      }
    ]
  },
  "output": {
    "format": "mp4",
    "size": {
      "width": 1024,
      "height": 576
    }
  }
}