upscale-8k.json

{
    "source": {
        "http": {
            "url": "https://images.example.com/your-small-image.jpg"            
        }
    },

    "operations": [
        {
            "op": "nn/jpegar", "force": true
        },
        {
            "op": "nn/magic", 
            "width": 7680, "height": 4320
        },
        {
            "op": "img/encode",
            "format": "JPEG",
            "format_opts": { "quality": 90 }
        }
    ],

    "sink": {
        "temp_store": true
    }
}