Sorry, but I have no log, so . I searched the forums, but could not find answer to this. I burned two MPEG-4 video files in a MKV container to BD-R.  One file ended in .2000 and the other in .1997_mpeg4.  After burning, their file types were changed to .2000 and .1997_mpeg4.  I could still play them in VLC, but they weren't visible when I tried to play with Standalone player.  I know I have burned other files like this to BD-R, but they weren't changed. Is there a setting in Imgbu