It had to happen. I screwed up the ffmpeg installation in the homework for the tutorial, so the tutorial page now has an errata section which explains the problem. Additionally, if you downloaded the VMWare image before now, you’ll need to download a new copy. Sorry for any pain caused.
The Definitive Guide to ImageMagick arrives in bookstores 26 December 2005, but Apress has already started sending out PDF versions of the book to some reviewers (let me know if you’re interested in doing a review and I will see what I can do), and there is a sample chapter available for download from the Apress site.
We worked hard to make the book as good as we could, including having a technical review team, several layers of editors, and me reading all of the chapters more than I would like to admit. That doesn’t mean that it’s impossible that errata slipped through though, so if you see something like that then please send either me an email, or even better send an email to the address reserved for such things.
Each error found, if I agree with it, will result in a thank you email, the error being corrected in any future editions, the error being listed online (I don’t know where yet though), and a credit in future versions of the book.