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- W3028345089 abstract "This paper proposes learning-based approaches for transcoding videos compressed using the Moving Picture Experts Group 2 format into the High Efficiency Video Coding (HEVC) format. In the training mode of the transcoder, mappings between extracted features and split decisions are calculated. While in the transcoding mode, the split decisions of Coding Units of the HEVC video are predicted. Two formulations are proposed for the prediction of split decisions based on multi model and multi-tier solutions. In the former solution, multi models are generated based on the total number of split flags in a coding unit. While in the latter solution, split decisions are modelled at three different coding depths. The proposed solutions are evaluated in terms of excessive bitrate, drop in PSNR, classification accuracy, model generation time and transcoding speedup. It is shown that the multi-tier solution maintains the rate-distortion behaviour of full re-encoding at the expense of lower gain in transcoding speedup. In comparison to existing work, it is shown that the proposed solutions offer a significant enhancement in terms of rate-distortion performance and classification accuracy." @default.
- W3028345089 created "2020-05-29" @default.
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- W3028345089 date "2020-05-25" @default.
- W3028345089 modified "2023-10-17" @default.
- W3028345089 title "Predicting split decisions in MPEG-2 to HEVC video transcoding" @default.
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- W3028345089 doi "https://doi.org/10.1007/s42452-020-2909-7" @default.
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