freeconvert {
    "tasks": {
        "import": {
            "operation": "import/upload"
        },
        "compress": {
            "operation": "compress",
            "input": "import",
            "input_format": "mp4",
            "output_format": "mp4",
            "options": {
                "video_codec_compress": "libx265",
                "compress_video": "by_percentage",
                "video_compress_quality_percentage": 0,
                "isCompatibleWithOldDevices_compress": false,
                "subtitle_add": "upload",
                "subtitle_mode": "hard"
            }
        },
        "export-url": {
            "operation": "export/url",
            "input": [
                "compress"
            ]
        }
    }
}