flag.StringVar(&cameraTopic,"mqtt-topic-frame",os.Getenv("MQTT_TOPIC_CAMERA"),"Mqtt topic that contains camera frame, use MQTT_TOPIC_CAMERA if args not set")
flag.StringVar(&steeringTopic,"mqtt-topic-steering",os.Getenv("MQTT_TOPIC_STEERING"),"Mqtt topic that contains steering raw values, use MQTT_TOPIC_STEERING if args not set")
flag.StringVar(&switchRecordTopic,"mqtt-topic-switch-record",os.Getenv("MQTT_TOPIC_SWITCH_RECORD"),"Mqtt topic that contain switch record state, use MQTT_TOPIC_SWITCH_RECORD if args not set")
flag.StringVar(&recordTopic,"mqtt-topic-records",os.Getenv("MQTT_TOPIC_RECORDS"),"Mqtt topic to publish record messages, use MQTT_TOPIC_RECORDS if args not set")