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About this paper

Xiangyu Chen, Jixiang Luo, Yuankai Fan, Haibin Huang, Chi Zhang, Xuelong Li

A new framework, Generative Transmission (GenTrans), rethinks video communication for ultra-low-bandwidth and weak-network conditions by jointly optimizing bandwidth, computation, and memory. It demonstrates superior perceptual quality at extreme bitrates, achieves a 1.5x decoding speedup, and maintains robust visual content even with up to 50% packet loss.

Key insights

  • Reframing video communication as a joint optimization of bandwidth, computation, and memory, rather than just rate-distortion, enables more efficient and robust systems for weak networks.
  • Exploiting cross-clip temporal redundancy through generative memory offers substantial bandwidth savings by re-using stable scene content, especially for low-motion scenarios.
  • Receiver-side computational overhead in generative video can be effectively mitigated by reusing intermediate runtime states, significantly improving decoding efficiency and reducing latency.

Summary by alphaXiv.

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