@ mk.2 - "Avast" - find your problem here, report false positive
diavc.ax is decoder and this file you only need
DiAVCSetting.exe is program to change decoder merit and register it to system...
PowerDVD is not good, it dont play many files, DxVA as I remember didnt work propetly with some files causing black screen... of course in the latest version that connect to MPC-HC...
dunno about ArcSoft, but probably the same
Can someone know maybe the latest version (link to pack, cause I will extract decoder with Universal Extractor will be usefull) ?
Because I want to try some new tests