Codec problem
 

Everytime im playing some vid ( the vid is M4V file ) bs player gives me an error "BS.Player cannot play the media file.
You don't have necessary codec installed, file may damaged or not media file.

Click 'Find codec' to try to find codec." i redownload the codecs that i already installed and after some time the same thing.. I've never had this problem with these vids. Anything that can fix this issue ?

Because i can't edit. So the issue is not happening only to M4V files. It happends to mp4 files too.