The plan was to have the duper image DVDs and do the transcoding later on something with a bit more horsepower (I think the duper is 500MHz, and it has three drives, transcoding three DVDs at once.... ouch).

Unfortunately, when I ran a disc through the process to test, after a sufficient amount of time .... there was no ISO in the folder. No idea why. So DD is running *again*, manually this time, and with a little more logging. Maybe I'll figure out why it failed. If it succeeds, uh, I guess I put in some logic to check for an ISO when it's done, so it can move unimaged discs to the fail pile instead of the output spindle.