This Recommendation defines user requirements for quality of experience (QoE) for IPTV services. The QoE requirements are defined from an end-user perspective and are agnostic to network deployment architectures and transport protocols. The QoE requirements are specified for the endto- end service and information is provided on how they influence network transport and application layer behaviour. Compression coding schemes addressed in this Recommendation are examples@ and detailed numeric values given as performance targets@ e.g.@ bit rate@ packet loss rate@ are also examples. The readers may appropriately choose or replace these parameter values in order to be consistent with the requirements of each IPTV service context to which they are intended to be applied.