"" wrote:
> What is the difference between the various video file
> extensions - .avi,
> ..dat, .mpeg etc.? I notice .avi files take up a considerably
> larger space
> compared to .dat for example.

The type of video isn’t necessarily defined by the file extension,
for example you could rename a video file to .bmp and as long as you
have a good player, it will work out what kind of video file is based
on what information is available from the file it’s self, rather
then assuming it’s a image based on the file extension. However, in
this case avi is unencoded video, which will take up lots of space.
mpeg is either mpeg 1 or mpeg 2 encoded and takes up less space.
Additionally, avi files often are not plain audio and video, it is
common place for them to be mpeg 4.

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