{
    "classification+detection": {
        "stream_config": {
            "deviceId": "0"
        },
        "mxpi_imagedecoder0": {
            "props": "xxx",
            "factory": "mxpi_imagedecoder",
            "next": "appsink0"
        },
        "appsink0": {
            "props": {
                "blocksize": "4096000"
            },
            "factory": "appsink"
        }
    }
}