This paper introduces a practical learned video codec. Conditional coding and quantization gain vectors are used to provide flexibility to a single encoder/decoder pair, which is able to compress video sequences at a variable bitrate. The flexibility is leveraged at test time by choosing the rate and GOP structure to optimize a rate-distortion cost. Using the CLIC21 video test conditions, the proposed approach shows performance on par with HEVC.
@article{arxiv.2104.09103,
title = {Conditional Coding and Variable Bitrate for Practical Learned Video Coding},
author = {Théo Ladune and Pierrick Philippe and Wassim Hamidouche and Lu Zhang and Olivier Déforges},
journal= {arXiv preprint arXiv:2104.09103},
year = {2021}
}