A Video Object File (or VOB) is a strict subset of the MPEG-2 Program Stream, primarily used within DVD video. A VOB will contain an extended private stream containing both 'Packet Control Information', and 'Data Search Information'.
11/2023 (v.115)- Modified the offset values in the internal signature from null to 0 as part of a project to match PRONOM data with the xsd standard. Internally researched.