Depends on what the contract means by "reproduction." In the DVD world the terms most frequently used in reference to making copies are duplication and replication.
Duplication implies that copies are created by burning (recording to writeable) discs from a "master" disc. In this case the "master" is the disc you burn from your authoring program (Encore?).
Replication implies that copies are created by a stamping process that uses a glass master. The stamping (glass) master is created at by the replacation facility. Typically, replication means that you must supply a DLT of the DVD to the replacator.
To me the term "reproduction" implies that they want a master videotape. I would ask them to define the word "reproduction" in the contract. Don't sign until you fully understand what they want.