Semantic-Aware Neural Video Codec for Error-Resilient Low-Latency Transmission

Abstract:Emerging physical AI systems require low-latency, task-oriented video communication over unreliable channels. We propose a semantic-aware multi-level neural video coding method for robust low-latency video transmission over unreliable channels that are abstracted as multi-level packet erasure channels. Built upon the real-time DCVC-RT neural video codec, the proposed framework introduces a semantic- and feature-aware coding strategy that partitions encoded representations into packets carrying different levels of semantic and latent-feature importance and assigns these packets to different streams, each associated with a priority level when transmitted over unreliable communication channels. We also developed an error-resilient entropy model that removes inter-packet dependencies, allowing each packet to be decoded independently under packet losses. The complete system is trained end-to-end over the abstracted multi-level packet erasure channels, enabling learning of channel-aware representations together with importance-aware packet assignment while facilitating the network for differentiated packet prioritization. Experiments show that the proposed framework significantly improves robustness over baseline DCVC-RT under packet erasures, achieving graceful degradation in less important regions while better preserving task-relevant visual content.

Image and Video Processing (eess.IV); Information Theory (cs.IT); Machine Learning (cs.LG); Multimedia (cs.MM)

arXiv:2609.16279 [eess.IV]

(or arXiv:2609.16279v1 [eess.IV] for this version)

https://doi.org/10.48550/arXiv.2609.16279 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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