Sometimes, when i use the reproductor of blakhole for watching a film, the zoom is not right. It removes the black lines in the top and in the botton of the screen. The result is that the film is strange (not in format 16:9). I use the menu button to change the zoom, but i get the options to change to list of archives, clear list,... but no option to change the zoom. Is possible to change the zoom and get again the black top and botton lines to get the film in 16:9???? What button do i have to use?