Preprocess (-pre)Compression Ratio %PSNR (db)Butteraugli ScoreEncode Time (s)Compression Ratio %PSNR (db)Butteraugli ScoreEncode Time (s)NoneSegment smoothDithering43.4443.6843.9244.1644.437.3237.33537.3537.36537.383.644.44.85.20.360.480.60.720.84Highcharts.com