I think this is called block noise, more obvious in MPEG-1, in MPEG-2
it has been greatly reduced. It is also related to the
encoding/decoding software/hardware, most Hollywood VCD (MPEG-1)
encoded very well, they look quite acceptable.
C.H.Ling
Klaus Elmquist Nielsen wrote:
>
> Hi all,
>
> A while back I was watching TV with my ex girlfriend. She has been working
> for years with
> drum scanners and has a very good eye for images. She pointed out that in
> some scenes
> when the camera was moving there are some noise appearing. Much like small
> "dancing"
> squares (kind apologies for my english here). It takes a little to notice it.
> But it
> is there. So in fact, while MPEG is quite good, it it shows its limitations
> to the
> trained eye.
>
> Cheers,
> Klaus
>
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