Controls placed on this page let you to configure the video files processing.
"Known video extensions" edit field contains alternative file extensions which are not registered in your system, but relate to video files. Extensions must include dots and should be separated by spaces.
"Play audio using" switch determines the video files playback method.
"Internal player" - switch to this option to play the selected video file with a built-in video player.
"System default" - switch to this option to play the selected video file with your default player (usually it's Windows Media Player).
"Specified below" - switch to this option to play the selected video file with a player the path to which is specified below (non-default player).
Note: to play a video file just double-click its name (if the "Info tips" option is enabled you can also press the "Play" button displayed in the preview window).