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Typical Compression Achieved

The amount of compression that can (and should) be achieved for a given media depends very much on the actual requirements of the user and their given task.

MPEG I and II targets for compression down to storage and transmission over digital broadcast networks, so several Mbps are worth considering. H.261 is aimed at interactive internet telpehony, so the target operating environment is the digital phone net, at one to several multiples of 64kbps. H.263 and MNPEG IV are aimed at lower capacity for each case - so we can envisage a range of a few 10s of kbps up to several Mbps (some users report that motion JPEG for a broadcast quality result typically takes near to 20Mbps peak).