by BrianCee on Tue May 01, 2012 5:01 pm
Yes as I suspected it is because you have put a transition between two video clips - OR if you did not put it there you may have inadvertently overlapped the two video/photo clips when you put them in the timeline - this will automatically insert a transition.
a transition is a smart way of switching scenes - like a book opening or a roll over into the next scene which you can apply to any join between two videos.
I can't see the one in the lower picture but I suspect it is down off the bottom of your screen shot - to remove them - just click on the little yellow square in the timeline so that it highlights - then hit the delete key. Repeat the process in the second one by scrolling down until you see the one in the lower track and delete that as well.
to prevent it happening again - make sure you do not overlap videos/pictures when putting them in the timeline.
Incidentally I do not like editing with the view of the video you have there - I much prefer to see all the video frames - like a film strip along the timeline - try it - Press F6 and in the preferences box up near the top were it says 'Clip display Mode' change that drop down to Thumbnail only - click OK at the bottom and see what you think - if you do not like it you can easily change it back.