Great! But..

I love using iMovie and its a great app! But theres some things that arent the best.. When I start adding lots of things like music and speeding up clips and trimming clips, the transitions between each clip will be black. Or for some reason there will be black for a couple seconds before each clip. It bugs me because it messes up the video. Again, I love this app! But if you could try to maybe fix the issue.. that would be great!

?QueenOfSoccer? about iMovie, v2.2.3