Every comment made from the comment box is associated with a time code. This time code is based on the actual time within the video when the comment occurred.
You can edit time codes within the comment box. Time codes must appear at the beginning of a comment. Use either of the following formats when creating a time code (note that there are no spaces within a time code):
e.g. @01:28:15 will post the comment to 1 hour 28 minutes 15 seconds
e.g. @80 will post the comment to 1 minute 20 seconds