I use programs like Power Director
amd Magix
but I now have a problem that i dont know were it started from or how to go about finding were so it can be fixed

every file whats over 1.5Hrs in length give the same end result \
After doing the adjustments and saving the file I find it goes out of sound sync
I use mp4 and tried avi
both programs do the same problem so i guess its not the programs but something in the system \