gistfile1.py

"processing": [
        {
            "band": 1,
            "process": [
                {
                    "extract_bands": ""
                }
            ]
        },
        {
            "band": 1,
            "output_file_name": "merge",
            "process": [
                {
                    "gdal_merge": {
                        "prefix": "gdal_merge_",
                        "extension": "tif"
                    }
                }
            ]
        },
        {
            "band": 1,
            "output_file_name": "final",
            "process": [
                {
                    "get_pixel_size" : "{{PIXEL_SIZE}}"
                },
                {
                    "gdalwarp": {
                        "opt": {
                            "-multi": "",
                            "-overwrite": "",
                            "-of": "GTiff",
                            "-s_srs": "'+proj=sinu +R=6371007.181 +nadgrids=@null +wktext'",
                            "-co": "'TILED=YES'",
                            "-t_srs": "EPSG:3857",
                            "-srcnodata": -3000,
                            "-dstnodata": -3000
                        },
                        "prefix": "gdalwarp_",
                        "extension": "tif"
                    }
                }
            ]
        },
        {
            "band": 1,
            "process": [
                {
                    "gdaladdo": {
                        "parameters": {
                            "-r": "average"
                        },
                        "overviews_levels": "2 4 8 16"
                    }
                }
            ]
        }
    ],