Files in directory must be in "a(1).mp4, a(2).mp4...a(10).mp4" style. Directory doesn't contain anything besides "*.mp4" or any other video files. There are two mods of work: 1) html/htm-files mode (HTMLConfiguration); 2) txt-file mode (TXTConfiguration). In default is on html/hml-files mode, but it can switched manually to txt-file mode by changing in AutoRenamer class. If in use txt-file mode work style of program changes. Must to configure list.txt file by example: lesson 1 Work with Css 01:25:03

                                lesson 2
                                HTMl tags
                                02:02:35
                                
                                ........

There can be any "\r\n" as you like between two configurations. Program automatically find they and split to different file names In this mode list.txt can consists in directory.