Mon Dec 5 09:01:46 EST 2005
<<On Mon, 05 Dec 2005 08:30:55 -0500, Brian Vita <firstname.lastname@example.org> said:
> The JPEG pixelation is usually an indication of a degraded signal.
> Either you cable is flakey or the satellite feed is weak.
Actually, it's MPEG, not JPEG, in this case. (Although the inderlying
principle -- the Discrete Cosine Transform -- is the same in both JPEG
images and MPEG C-frames.)
In any event, it's also an indication of an over-compressed signal, as
when certain public broadcasters try to run PBS HD and a full slate of
multicast feeds on the same multiplex.
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