There may be a limitation if the DVD is copy-protected, as is usually the case. There's too much to read for a single comment in DMCA: https://www.congress.gov/105/plaws/publ304/PLAW-105publ304.pdf

But it does fall under this definition (§1201):

‘‘(a)(3) As used in this subsection—
‘‘(A) to ‘circumvent a technological measure’ means to descramble a scrambled work, to decrypt an encrypted work, or otherwise to avoid, bypass, remove, deactivate, or impair a technological measure, without the authority of the copyright owner;

and

‘‘(a) VIOLATIONS REGARDING CIRCUMVENTION OF TECHNOLOGICAL MEASURES.—(1)(A) No person shall circumvent a technological measure that effectively controls access to a work protected under this title.