A DVD I'm currently viewing, "Mob Justice", is based on a couple of old magazine articles. One of the special features on the disc is a pdf of these articles. The disc says to
...insert the DVD into the DVD-rom on your comp. Navigate to the root of the disc. Double click on the DVD icon in My Computer. Launch the pdf articles.
I pop the disc in my DVD drive, click on 'explore', see two folders. One Audio, the other Video. The Audio is empty. The Video folder has a number of files, none pdf. However, I do notice a number of file/icons within the video folder with the red adobe logo (presumably the article files). However they have either a .bup or .ino extension.
I attempt to open these files with Adobe Reader 8 and am told it does not recognize the format or extension. Yr help, please.
that contain content information need to play/navigate the DVD contents.
The BUP files are backup files of the IFO files. Also placed by the "burn" package.
It may be that the PDFs have been wrapped into the content package that the
burn application created. Perhaps playback of the DVD will present a means of navigating to the PDF content that is packaged in the DVD format. From there you ought to be able to view that content.
Be well...
Be well...