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Old 10-25-2012, 02:15 AM  
notjoe
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Join Date: May 2002
Location: Toronto, Canada
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Multiple reasons.
1) The process is waiting for other resources to free up and therefore cannot go full speed.
2) The codec you're encoding in to doesn't support multiple processors (cores on a processor). For example, you have a CPU with 4 cores. The codec your encoding does not support SMP. You'll only encode using a single core (or 25% of the overall CPU power).
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