I really wish this would work but... The demo version has locked up my entire system several times in demoing it for no more than an hour. Each time I have had to do a hard restart. Hard on the system and VERY time consuming since it also requires doing a SUM to make sure the system has not been corrupted. Also though the MPEG-4 option preference setting worked the first time I used it and saved the capture as a very small file... after I tried a couple other formats and then tried to save as an MPEG-4 again it would not save in this format again and saved files that were huge (i.e. 10+ the size of the original MPEG-4 though the size and time of the capture was not that much different). Again... I wish you luck with this app since... though I use SnapZ Pro for static images... the $40 upgrade that Ambrosia requires is too much, just to occasionally take a movie capture. Let me know when the bugs get worked out. I'll check back. Good luck. (OSX 10.5.4 on a G5 tower)