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Originally Posted by sattati
Hi,
One funny thing that I don't understand is pixelization only when pictures have action or movement. I mean for example, pictures iare very bad on a soccer game or people dancing or any moving object. These moving things are always highly pixelized. Otherwise the picture is crystal clear when no movement is involved (news anchors, still pictures and so on). The sound is always good in both instances. FYI I have a fortec classic and a 90cm dish with a 0.4 dB LNB. The strenght of my signal is always above 70% (I don't have a quality bar). Also, I have not experienced any rain or snow faids.
So is my receiver signal processing not up to the task or ....?
Thanks |
this is how MPEG 2 compression is supposed to work. It basically "guesses" or predicts that the current frame will also be the next frame with little change. When there is BIG frame change (ie high speed camera movement) then it is surprised and attempts to map out the movement and compress at the same time yielding to pixelization.
This is a sign that the satellite channel you are watching is saving on bandwidth and has a lower resolution and compression bitrate.. this translates to saved money for the provider. Compression on pay channels is much much less and it has higher resolution and this kind of problem is not as prominent.