I recorded a live show last night (stand up comedy). I held a zoom h1 voice recorder in my hand while I spoke into the mic to record my voice. The camera was far away. I then transferred the video and audio into final cut. I synched the zoom recorder audio with the camcorder video. At first, it is perfect. As the video goes on it gets more and more out of synch until it is completely off. Why does this happen and is there a way to correct it? Thank you for your help.