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Buffering, buffering, buffering, buffering.... needless to say, buffering is the key, buffer those decoded screens like, 10-15 seconds if possible, check memory, and then render, like streaming video on most systems, buffering is good for you, even sound can be buffered.  

  

multiple buffers could also be implemented, i.e. a buffer for the point of css decoding, then the buffer after mpeg2dec before it's actually rendered, even rendering should be double-buffered for smoothness, but, options would be there for card support, I have a great card for DVD, supports all known features besides hardware decoding (ATI Rage 128 Mobility M3) and I have oms working fine, but, it's choppy video with good sound... who knows.  

  

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