I have a many old Divx cartoons. This Divx not very good quality. I use avisynth for frameserving and CCE 2.62 for encoding. If use SpatialSoften and TemporalSoften for noise reduction, more processor time spent on noise reduction. In fact speed encoding limited mainly noise reduction. And if I use multipass encoding at any pass I spent processor power for noise reduction. I try reencode avisynth script use Virtualdub and lossless HuffYUY2 codec. I know that very expensive for file size. I use fastrecompress in Virtualdub. DivX have YUY2 colorspace my file encoded with HuffYUY2 is RGB24. How make that I have YUY2 colorspace.
With Kind regards Yury.