Reveal right to left video template

{
    "timeline": {
        "tracks": [
            {
                "clips": [
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/images/happy1.jpg"
                        },
                        "start": 0,
                        "length": 3,
                        "effect": "zoomIn",
                        "transition": {
                            "out": "reveal"
                        }
                    }
                ]
            },
            {
                "clips": [
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/images/happy2.jpg"
                        },
                        "start": 2,
                        "length": 3,
                        "effect": "zoomIn",
                        "transition": {
                            "out": "reveal"
                        }
                    }
                ]
            },
            {
                "clips": [
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/images/happy3.jpg"
                        },
                        "start": 4,
                        "length": 3,
                        "effect": "zoomIn",
                        "transition": {
                            "out": "reveal"
                        }
                    }
                ]
            },
            {
                "clips": [
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/images/happy4.jpg"
                        },
                        "start": 6,
                        "length": 3,
                        "effect": "zoomIn",
                        "transition": {
                            "out": "reveal"
                        }
                    }
                ]
            },
            {
                "clips": [
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/images/happy5.jpg"
                        },
                        "start": 8,
                        "length": 3,
                        "effect": "zoomIn",
                        "transition": {
                            "out": "reveal"
                        }
                    }
                ]
            },
            {
                "clips": [
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/images/happy6.jpg"
                        },
                        "start": 10,
                        "length": 3,
                        "effect": "zoomIn"
                    }
                ]
            }
        ],
        "soundtrack": {
            "src": "https://shotstack-assets.s3-ap-southeast-2.amazonaws.com/music/unminus/happy.mp3"
        }
    },
    "output": {
        "format": "mp4",
        "resolution": "hd"
    }
}