In the various video file formats I have to work with in litigation, one of the most common are .VOB files. A .VOB file is the container format in DVD-Video media files. VOB (Video Object) files can contain digital video, digital audio, subtitles, DVD menus and navigation contents which are put together to stream the content of a DVD.
If you have a DVD and just want to play it, you will never need to know about .VOB files but when you have to convert it or capture clips from it you will need to find a way to do this. Sometimes you can just simply play a .VOB file in Windows Media Player or Videolan (VLC) player separately. There are times when you can simply change the file extension from .VOB to .MPG and it will work the same but it doesn’t always work depending on how the file is coded. Although a VOB file is essentially an MPEG file, it could have additional data that might be needed.
Perhaps the safest way to convert a .VOB file is to use a video conversion program. I sometimes use AnyVideoConverter. Doing so will ensure you can keep it seamlessly and not risk losing any important information or any loss in quality.
If you need to convert a DVD to play in TrialDirector, there is a nifty program included which will make life easier. It is called the inData Digital Video Disc (DVD) Extractor. It is very easy to use and can export the output to MPEG-1 and MPEG-2. This is a useful tool if your attorney hands you a DVD to put into TrialDirector. This utility will extract the DVD format into a more user friendly form for TrialDirector.
With an video conversion, you must always use caution that you aren’t altering the video file or degrading it in any way. There have been some instances when I have converted a VOB file only to discover that the video and audio did not match up or the time code was missing or different than when the legal team reviewed the original DVD. Also, you have to stress to the legal team to provide you with the video files with ample notice as sometimes conversion doesn’t always happen instantly.