Trying to create a movie that is just the final 5 mins of a 20 minute video. 
I go to the video tools/edit options - but although the trim tools /start / end options show, they are only in the faded gray colour and not able to be used. I need to get this option to show in the more definate black/open print so I can operate the slide tool.
What am I not doing to get to this step ?