that is correct. You should know, though, that at the end you'll have a mov file, not avi. There is no mac software that can combine avi files to produce a large avi file. Quicktime will let you export one, but it will re-encode it to Cinepak compression (very large files). The best you could do is output from QT to MPEG or something that ffmpeg can read, and then recompress to divx with ffmpeg