What is a VOB file?
DVD video container with multiple streams
VOB files are ‘video object’ files. VOBs are standardized container files that store multiple media formats within it. That means that a VOB file usually contains video streams, audio streams, and text metadata. The most common use of a VOB file is for DVD media. A typical VOB file will contain audio, video, subtitle, menu, and DVD content information. The file data is then multiplexed together into a streaming format.