TY - GEN A1 - Herglotz, Christian A1 - Kränzler, Matthias A1 - Chu, Xixue A1 - François, Edouard A1 - He, Yong A1 - Kaup, André T1 - Extended Signaling Methods for Reduced Video Decoder Power Consumption Using Green Metadata T2 - IEEE Transactions on Circuits and Systems II: Express Briefs N2 - In this brief, we discuss one aspect of the latest MPEG standard edition on energy-efficient media consumption, also known as Green Metadata (ISO/IEC 232001-11), which is the interactive signaling for remote decoder-power reduction for peer-to-peer video conferencing. In this scenario, the receiver of a video, e.g., a battery-driven portable device, can send a dedicated request to the sender which asks for a video bitstream representation that is less complex to decode and process. Consequently, the receiver saves energy and extends operating times. We provide an overview on latest studies from the literature dealing with energy-saving aspects, which motivate the extension of the legacy Green Metadata standard. Furthermore, we explain the newly introduced syntax elements and verify their effectiveness by performing dedicated experiments. We show that the integration of these syntax elements can lead to dynamic energy savings of up to 90% for software video decoding and 80% for hardware video decoding, respectively. KW - Decoding KW - Streaming media KW - Syntactics KW - Metadata KW - Standards KW - Receivers KW - Software Y1 - 2024 U6 - https://doi.org/10.1109/TCSII.2023.3328405 SN - 1549-7747 SN - 1558-3791 VL - Volume 71 IS - Issue 3 SP - 1141 EP - 1145 ER -