Hi Morgan
Please make sure that you request a DVD check disc from the replicator. It is the “actual” production master coming off of the replication machine. If the copy looks good then the rest of the 18,000 DVD should look the same.
A replicator will not command on the quality of your video, audio, menu…etc. They will run through their pre-mastering machine to check if there is any un-readable sector, or if the layout of the video folder is meeting DVD video standard. Some of them will be a bit to bit compare for you, if they have in terms of data wise (1s and 0s) on the stamper is a match with your DVD-R, then you will be in good hand.
Replicator usually run 10% more on the job, so they can cover the defective DVD. If they are in for good business they should not release the bad discs to customer.
Swire Ho
Hellman Production
https://www.hellmanproduction.com