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- W4298129602 abstract "Video compression is complicated by degradation in User Generated Content (UGC). Preprocessing the data before encoding improves compression. However the impact of the preprocessor depends not only on the codec and the filter strength of the preprocessor being used but also on the target bitrate of the encode and the level of degradation. In this paper we present a framework for modelling this relationship and estimating the optimal filter strength for a particular codec/preprocessor/bitrate/degradation combination. We examine two preprocessors based on classical and DNN ideas, and two codecs AV1, VP9. We find that up to 2dB of quality gain can result from preprocessing at constant bitrate and our estimator is accurate enough to capture most of these gains." @default.
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- W4298129602 date "2022-10-03" @default.
- W4298129602 modified "2023-10-14" @default.
- W4298129602 title "An empirical approach for estimating the effect of a transcoding aware preprocessor" @default.
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- W4298129602 doi "https://doi.org/10.1117/12.2633578" @default.
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