Long Term Evolution (LTE) is one of the latest mobile communication technologies being commercially deployed worldwide. It has emerged as a promising technology for new applications such as mobile video surveillance (IPVS) due to its higher data throughputs as well as the quality of the service management capabilities. This work focuses on the performance evaluation of a mobile and real-time IPVS system over a LTE network in both operation modes, namely FDD and TDD. The QoS Requirements for the IPVS were defined and two simulation analyses were performed in OPNET Modeler in order to compare them to the QoS Delivered. The first analysis studied the performance of the IPVS service from a capacity point of view in a single cell scenario while the second analysis looked at the performance of the IPVS service in a sample network configuration including several cells. In light of the analysed results it was evidenced the flexibility of TDD operation mode in terms of capacity as well as its higher delay and packet delay behaviours in comparison with FDD operation mode. Additionally it was shown that TDD index 6 does not comply with the QoS performance required for an IPVS service in a multi cell network.