Video frame grab image template

{
    "timeline": {
        "soundtrack": {
            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/music/unminus/berlin.mp3"
        },
        "tracks": [
            {
                "clips": [
                    {
                        "asset": {
                            "type": "title",
                            "text": "Hello World",
                            "style": "minimal",
                            "size": "x-small"
                        },
                        "start": 0,
                        "length": 5,
                        "transition": {
                            "in": "fade",
                            "out": "fade"
                        },
                        "effect": "zoomIn",
                        "effectOptions": {
                            "scale": 1.1
                        }
                    }
                ]
            },
            {
                "clips": [
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/images/wave-barrel.jpg"
                        },
                        "start": 0,
                        "length": 5,
                        "effect": "zoomIn"
                    },
                    {
                        "asset": {
                            "type": "video",
                            "src": "https://s3-ap-southeast-2.amazonaws.com/shotstack-assets/footage/cat.hd.mp4",
                            "trim": 5
                        },
                        "start": 5,
                        "length": 5
                    }
                ]
            }
        ]
    },
    "output": {
        "format": "jpg",
        "resolution": "sd",
        "range": {
            "start": 6,
            "length": 1
        }
    }
}