A video compression standard planned for late 1998. MPEG-4
extends the earlier MPEG-1
and MPEG-2 algorithms with
synthesis of speech and video, fractal compression, computer visualisation and
artificial intelligence-based image processing techniques.
MPEG.ORG is an excellent source for additional
information on MPEG format and usage.
There are several ways to decode MP4 video. Most of the time, having Apple
QuickTime installed is
sufficient. Occasionally, a file is not compatible with QuickTime. You will
need to install CCCP
when that happens.
Defined by Microsoft, AVI stands for Audio
Video Interleave. It is a special case of the RIFF
(Resource Interchange File Format). AVI is the most common format for audio/video
data on the PC.
AVI is Microsoft's response to Apple's QuickTime
technology. Early AVI files were limited on choice of video and audio codecs,
quality, and resolution. However, with the introduction of DirectShow, AVI became
a very flexible and powerful architecture. Some newer codecs including DivX
and XviD enable AVI files to have similar
or even better quality than DVD.
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