JVET-AQ0199 AHG18: Feedback-Aware Reference Preservation for Ultra-Low Latency [Y. Xiao, Y. Hu, X. Ma (MLS labs)] [late]
This proposal presents a feedback-aware reference picture preservation method for ultra-low latency cases. By designating the latest confirmed picture, which is successfully decoded, as an additional reference candidate, the proposed method improves robustness under lossy unicast PriorON transmission with minor impact on the original low-delay reference structure.
The experiments were conducted following the general test conditions specified in JVET-AN2039. The proposed method was evaluated in the ultra-low latency unicast PriorON test scenario. Different quantization parameters, latency constraints, and network trace conditions were tested to cover various lossy transmission cases.
It was commented that the proposal might require keeping more pictures in the reference picture memory. According to proponents, the number of reference pictures is kept identical, but the strategy which pictures are kept in the DPB is modified by modifying RPL management at the encoder side.
Generally, the idea is asserted to be interesting, but it should be investigated by in the AHG if it can be implemented without changing normative behaviour of VVC. As it shows improved performance under lossy conditions, it would be an interesting candidate to replace the current VTM anchor in the AHG18 CTC.
Video CICP, generic aspects of metadata (1)
Contributions in this area were discussed during the closing plenary on Wednesday 15 July 2026 (chaired by JRO).