Update README.md

README.md

@@ -40,8 +40,8 @@ The original video files will not be modified. Instead it creates a lossless exp
 - <kbd>l</kbd> Speed up video
 - <kbd>←</kbd> Seek backward 1 sec
 - <kbd>→</kbd> Seek forward 1 sec
-- <kbd>.</kbd> (period) Tiny seek forward
-- <kbd>,</kbd> (comma) Tiny seek backward
+- <kbd>.</kbd> (period) Tiny seek forward (1/60 sec)
+- <kbd>,</kbd> (comma) Tiny seek backward (1/60 sec)
 - <kbd>i</kbd> Mark in / cut start point
 - <kbd>o</kbd> Mark out / cut end point
 - <kbd>e</kbd> Export selection (in the same dir as the video)