DivX 5.1.1 pro beta 2 is available offers speed optimizations

What's new in DivX pro 5.1.1 Beta 2
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        Encoder fixes:
            - Slow mode 5-10% faster than 5.1.1 Beta 1
            - Slowest mode 5-10% faster than 5.1.1 Beta 1
            - Issues with Psychovisual and DirectShow Encoder
            - Resize issues with DirectShow Encoder
            - Fix issues with capture applications

        Decoder fixes:
            - Issue with n B frames and Deblocking fixed

        Changes:
            - Psychovisual Disabled by default
            - Feedback mode Disabled by default

        NOTE: How we measure speed of the Codec ?
        We want to measure the speed of the encoding, not of the Encoding application , of a MPEG2 decoder or some preprocessing tools. So we create some tests files that are already pre processed and resized and that are encoded using HuffYUV (and predict left option) and we use theses to actually measure the Codec speed using VirtualDub. This reduces the influence of the actual reading of the source file. People with SMP system or HyperThreading CPU can also create a simple AVS script that will just load and color converts the HuffYUV file before sending it to the codec, allowing the AVS script to run on a separate CPU/Thread than the codec itself.

        If you already own DivX Pro, a DivX Beta release will install over your existing DivX Pro version unless you install it to a different directory. (You may want to keep a copy of your officially released DivX Pro codec in case Beta Prototype releases on a 15-day trial, making it easy for everyone to help improve the codec. If we push out yet another beta release after your 15 day trial is up , we will create an additional 15-day trial so you can continue using the prototype version.