I've been reading that Quicktime Pro offers more options than Quicktime. It's not expensive, so I don't mind upgrading if it's worth it. But does Quicktime Pro allow me to watch more video formats like AVI etc? (Or do I still need to install VLC?) And does Quicktime Pro enable more codecs (for example, in iMovie importing and exporting)? What are the practical benefits of Quicktime Pro? And what have been your experiences? EDIT: The more I'm reading, the more I'm realising that Quicktime Pro should be used to convert formats into Apple-happy formats (for use in iMovie, for example). Is this correct? Let me ask the question a different way. Does Quicktime Pro have any codec advantages over Quicktime?