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  1. 10th Jan 2004 17:00 #1
    SaSi
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    I've recently discovered that VirtualDUB is running quite slow on my newer P4/2.8 machine compared to the second P4/2.67.

    After looking at the CPU utilization while doing a DUB, I realized VirtualDUB utilizes only 50% of the CPU.

    I am using version 1.5.10 under WinXP SP1 and with a HyperThreading CPU.

    Anybody else noticed this?
    The more I learn, the more I come to realize how little it is I know.
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  2. 16th Jan 2004 14:01 #2
    SaSi
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    Anybody???
    The more I learn, the more I come to realize how little it is I know.
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  3. 16th Jan 2004 14:18 #3
    Gazorgan
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    The only time I experienced something sililiar was when I was dealing with captures. Huffyuv and MJPEG to be specific. Normally VDUB isn't constrained by I/O performance, but with a 20 GB source it easily has I/O issues.

    Try turning hyperthreading off, it doesn't gain you anything with VDUB, and it's probably the source of you 50% CPU utilization.
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