Hey I have a few avi's that need some audio syncing. I tried Final Cut to sync the audio and I was able to shift the audio track to make it work. The problem is that I don't know how to export the video back to its original format. Whenever I try and export it saves it as a 3.5GB or more file, when the original file was only about 200MB.

My question is if there is an easier, more direct method of syncing up the audio and video and saving over the old version. Also, how do you export from Final Cut so that the file is still in the old format and the same file size.