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Conditional Coding and Variable Bitrate for Practical Learned Video Coding

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Abstract

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.
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Dates and versions

hal-03198937 , version 1 (16-04-2021)
hal-03198937 , version 2 (19-04-2021)

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Théo Ladune, Pierrick Philippe, Wassim Hamidouche, Lu Zhang, Olivier Déforges. Conditional Coding and Variable Bitrate for Practical Learned Video Coding. CLIC workshop, CVPR 2021, Jun 2021, Nashville, United States. ⟨hal-03198937v2⟩
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