When I sync the audio on a movie at the start its perfectly sync but after 15-30 minutes sometimes with just 5 minutes the movie gets desync again, why? There is no subtitles, no timestaps on the video, nothing, just the video and one audio so I dont know where is the problem. Happens with every movie I try to sync. The audio difference is no more than 20 seconds.
I had no problem with one movie where the audio was only 2 seconds difference.