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  1. 2nd Jan 2010 18:33 #1
    wulf109
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    I notice some BlueRay diskd have secondary video in addition to the 1920x1080 stream. The secondary stream is 720x480. What is it and what purpose does it serve??
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  2. 2nd Jan 2010 18:44 #2
    videopoo
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    Its picture in picture most likely.
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  3. 2nd Jan 2010 18:44 #3
    yoda313
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    Maybe its branching video? or onscreen video commentary?

    I know the batman begins hd-dvd has onscreen featurettes that can play while a certain scene plays - superimposed that is while the movie plays - not seperately.

    I imagine this is probably what you are seeing. Secondary sd material meant to "enhance" the movie experience.
    Donatello - The Shredder? Michelangelo - Maybe all that hardware is for making coleslaw?
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