You can get some subjective improvement, although it's far from perfect. Eg: http://avisynth.nl/index.php/External_filters#Deringing_.26_Mosquito_Noise http://

You can get some subjective improvement, although it's far from perfect. Eg: http://avisynth.nl/index.php/External_filters#Deringing_.26_Mosquito_Noise http://avisynth.nl/index.php/External_filters#Deringing_.26_... See also: https://people.xiph.org/~jm/daala/deringing_demo/ https://people.xiph.org/~jm/daala/deringing_demo/