Conditional Coding and Variable Bitrate for Practical Learned Video Coding

• URL: http://arxiv.org/abs/2104.09103v2
• Date: Tue, 20 Apr 2021 09:28:17 GMT
• Title: Conditional Coding and Variable Bitrate for Practical Learned Video Coding
• Authors: Th\'eo Ladune (IETR), Pierrick Philippe, Wassim Hamidouche (IETR), Lu Zhang (IETR), Olivier D\'eforges (IETR)
• Abstract summary: Conditional coding and quantization gain vectors are used to provide flexibility to a single encoder/decoder pair. The proposed approach shows performance on par with HEVC.
• Score: 1.6619384554007748
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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