Added comment lines and frame similarity setting

config.ini

@@ -1,14 +1,21 @@
 ; Video2Crops Settings
 
 [settings]
+; (INT) Skip every n frame
 frame_step = 100
+; (FLOAT) Contrast/blur discard threshold
 contrast_threshold = 11.0
+; (INT) Image similarity discard threshold
 duplicate_threshold = 1000
+; (BOOL) Save processing output
 save_output = True
+; (BOOL) Display processing output and playback
 show_playback = True
+; (INT) Region of Interest area square size (pixels)
 roi_size = 400
+; (STR) Initial application window dimensions
 window_size = 300x450
 
 [debug]
-; Set to 'True' to output debug messages to console
+; (BOOL) Set to 'True' to output debug messages to console
 debug_output = False