Invisible wrote:
>> The key concept is how to describe the current frame fairly accurately
>> with the minimum amount of data, given some data from previous (and in
>> some cases future) frames.  Commonly motion is detected, as often blocks
>> of pixels hardly change, but are shifted in space from one frame to the
>> next.
> 
> ...so they added motion prediction then?

Wasn't that in MPEG1 already? (honest ignorant question)

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