Creating and sharing DVD ISOs violates the Digital Millennium Copyright Act (DMCA) anti-circumvention provisions, even for out-of-print discs. However, libraries and archives may claim for preservation if no commercial replacement exists.
An ISO image is an exact sector-by-sector copy of an optical disc. Unlike a standard video rip (like an MP4 or MKV file) which only extracts the main episode, an ISO file archives the entire DVD ecosystem. dora the explorer dvd iso archive