Thanks for replying so quickly. I came to realize that even though I shortened the head and tail of the video to conform to my audio, the video itself was not altered which was obvious when I exported and video was unchanged. My plan was to record video and audio on my iPad and simultaneously record my guitar inLogic. It would be easy to sync the two audio tracks. Then I would have full control over the sound of my guitar in logic, and I would just mute the video audio . This was a dream way to easily make videos of my guitar arrangements and have great video and great audio. I shortened the video head and tail, exported, and then saw that the audio was synced with the video, but the original, unwanted video was still there. What I think I will do is trim the video in Final Cut, then export that to Logic
Thanks,
Zimm