question: returns a set of video-specific informations . if null , there 's no video stream in the multimedia file . concode_field_sep String format concode_elem_sep VideoInfo video concode_elem_sep AudioInfo audio concode_elem_sep long duration concode_field_sep void setDuration concode_elem_sep void setVideo concode_elem_sep long getDuration concode_elem_sep void setFormat concode_elem_sep String getFormat concode_elem_sep String toString concode_elem_sep AudioInfo getAudio concode_elem_sep void setAudio
target: VideoInfo function ( ) { return video ; }