[4.10] What are .IFO, .VOB, and .AOB file? How
can I play, Convert them?
The DVD-Video and DVD-Audio specifications (see 6.1
) define how audio and video data are stored in specialized
files. The .IFO files contain menus and other information
about the video and audio. The .BUP files are backup copies
of the .IFO file. The .VOB file (for DVD-Video) and .AOB
file (for DVD-Audio) are MPEG-2 program streams with additional
packets containing navigation and search information.
Since a .VOB file is just a specialized MPEG-2 file,
most MPEG-2 decoders and players can play them. You may
need to change the extension from .VOB to .MPG. However,
any special features such as angles or branching will
cause strange effects. The best way to play a .VOB file
is to use a DVD player application to play the entire
volume (or to open the VIDEO_TS.IFO file), since this
will make sure all the DVD-Video features are used properly.
- How to convert .VOB .IFO .BUP to MPEG, AVI
Download here (9M)]
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- More about Convert
VOB to AVI
Many DVDs are encrypted, which means the .VOB files won't
play when copied to your hard drive. See 4.5
If you try to copy the .IFO and .VOB files to a recordable
DVD it may not play. See 5.9 .
You may also run into .VRO files created by DVD video
recorders using the -VR format. In some cases you can
treat the files just like .VOB files, but in other cases
they are fragmented and unplayable. You'll need a utility
such as Heuris Extractor
to copy them to a hard disk in usable format.