Hello. slamcyl,Welcome to the forum. When I use Shrink I use the default version and the I/O box is unchecked. The Quality settings are another matter. If compression is 15-20% then Deep Analysis is used. Compression over that and I use the AEC settings. Using these quality compression features does add time to the process. Those quality settings also make it possible for Shrink to compress the movie to disk properly.Go to the thread below and look for "bigorange's" threa