JVET-AM0153 AHG9: Loss recovery information SEI message [C. Kim, H. Tan, J. Nam, J. Lee, J. Lim, S. Kim (LGE)]
This contribution presents a further study on the Loss Recovery Information (LRI) SEI message, which was initially proposed at 38th meeting. This contribution proposes the following modifications:
- Introducing lri_target_delta_poc to signal the temporal relation between the recovery and target pictures, enabling their temporal separation and enhancing resilience against burst loss.
- Relocating the LRI SEI message to the recovery picture to ensure signalling robustness.
The redundant information is signalled in a later coded picture, which might limit its usefulness in low latency applications.
Which picture is the SEI message associated with – the normal picture or the recovery picture? Answer: the recovery picture.
It was suggested that the test conditions were cherry picked in the showcase in terms of the loss locations.
It was suggested that loss resiliency is of most interest for low latency applications.
An alternative was suggested that more frequent intra updates could be used, which could have bitrate overhead similar to what the recovery layer would require.
No action.