Kind of stream (general, video, audio...)
Stream number in Kind of stream (first, second...)
Parameter you are looking for in the stream (Codec, width, bitrate...), in integer format (first parameter, second parameter...)
Kind of information you want about the parameter (the text, the measure, the help...)
a string about information you search an empty string if there is a problem
Get a piece of information about a file (parameter is an integer).
Get a piece of information about a file (parameter is an integer)