Qualcomm FAU InterDigital The RTCP message formats specified in this document enables receivers to provide feedback to the senders and thus allows for short-term adaptation and feedback-based energy efficient mechanisms to be implemented. The message formats have broad applicability in point- to-point real-time video communication services. Specifically, it can be used to convey the video decoder feedback metadata to the encoder to adapte the decoder energy consumption as defined in the ISO/IEC International Standard 23001-11, known as Energy Efficient Media Consumption (Green metadata), developed by the ISO/IEC JTC 1/SC29/WG3 MPEG Systems.