VOB standards for "Video
Object". It is the file type to store video on a DVD
disc. It is actuallly a MPEG-2
video, with special extension to support PCM, AC3,
subpictures, and button navigation commands.
To decode DVD-VIDEO, you will need both GPL
MPEG-2 Decoder, and AC-3
WMV stands for Windows
Media Video -- developed and controlled by Microsoft. WMV is a generic name
of Microsoft's video encoding solutions and doesn't necessarily define the technology
what it uses -- since version 7 (WMV7) Microsoft has used its own flavour of
MPEG-4 video encoding technology.
DivX video format is originally based on hacked
Windows Media Format 11 adds support for HD video up to 1080P. WMF 11 runs
only on Windows XP and Vista.
Additional information is available on Microsoft
Windows Media page.
GPL MPEG Decoder
AC-3 Decoder Filter
River Past Video Cleaner