Curious motion-effect on Sky Movies

Discussion in 'Sky Digital TV Forum' started by Bert Coules, Mar 10, 2004.

  1. Bert Coules

    Bert Coules
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    Apologies for the non-technical way I'm about to put this...

    Is it my imagination or is there a curiously artificial, almost speeded-up effect sometimes apparent on rapid movement scenes on the Sky movie channels? It's particularly noticeable just at the moment in Tremors III (channel 304).

    I'm using a Sky Plus (mk1) box feeding a Panasonic AE100.

    Thanks in advance,

    Bert
    www.bertcoules.co.uk
     
  2. GaryB

    GaryB
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    What you are seeing sounds like the standard MPEG artefacts that you get with pretty much all Sky & Freeview signals. It is caused by the limited bandwidth that the broadcasters use in order to squeeze as many channels available in to the limited channel space. Do a search on here or Google for MPEG artefacts and you should get a more detailed explanation.
     
  3. Bert Coules

    Bert Coules
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    GaryB,

    Thanks for the explanation. I had wondered if that's what I was seeing, but was uncertain because as far as I know I've only been catching it over the past week or so. Perhaps it's always been there but I simply hadn't noticed it before.

    It was extremely prominent on BBC Three tonight as well. Has the bandwidth and compression on some channels been changed recently for the worse, I wonder?

    Bert
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