GNU/Linux Desktop Survival Guide
by Graham Williams
There are a variety of video formats. You have many choices for the format you would like to convert to. avi files are essentially a container for video encodings. An AVI file might contain, for example, a DivX encoded video.
Here is an example of taking a single chapter (happens to be chapter 19 of title 1 of one of my DVDs) and encoding in several formats (where there is a choice, they are 2620 kbit/s, but VCD is only 1152):
|VOB||.vob||2m||239MB||Audio somewhat poor.|
|VCD||.mpg||16m||51MB||No choice of kbit/s.|
But to determine the best procedure, format and parameters for grabbing a DVD into a compressed form suitable for hard disk storage is not a trivial exercise. For example, deinterlacing may be required, but it is (almost) only needed for material which was shot using a video camera, or transmitted for TV.
The following table summarise some of the file format capabilities of various players: