Wireless Multimedia Sensor Networks (WMSNs) are increasingly penetrating into all areas of human life and activity. According to forecasts of leading experts in the field of telecommunications, sensor networks as a component of Internet of Things (IoT) in the medium term will take an important place among communication networks. QoS routing protocols for WMSN have been a growing topic of research for many years. In this paper we present a new approach called M-EIGRP (Modified-Enhanced Interior Gateway Routing Protocol) with load balancing. This modification of the routing protocol is offered for low losses in the WMSN backbone infrastructure. The new protocol also offers a new flexible, multi-limited objective function that can integrate multiple metrics, including delay, load traffic and bandwidth to determine the end-to-end path.