secretrobotron/butter — pull request #47 by mbuttu (2012-02-27 19:18:59+00:00)
Title: Validate a track event's start and end time

Ensure that a track event's start time is less than the duration of the
video. Also, make sure that a track event's end time is less than or
equal to the video's duration. Display an error message to the user if
any of these conditions are not true.