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                 DivX Pro(tm) Fusion Codec
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                       Version 5.9
               ReadMe updated on 2005-01-07

   (c) Copyright DivXNetworks, Inc. All Rights Reserved.
   DivX and DivX Pro are trademarks of DivXNetworks, Inc.



|  Table of Contents
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   1. Introduction
   2. New in this version
   3. Known issues
   4. Submitting feedback
   5. Version history
   6. Files in this bundle
   7. Technical support



| 1. Introduction
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   Welcome to the DivX Pro Fusion codec!

   Following more than a year of research, development and architectural changes,
   DARC are proud to present this beta version for testing. Amid a sea of new
   features and enhancements, a new GUI, better video quality and better encoding
   performance are just a few of the highlights on offer.

   For further information regarding this release please visit:

     http://www.divxlabs.com

   Have fun and enjoy this beta release,

     - The DivX Team



| 2. New in this version
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   * The DivX encoder GUI has been redesigned

     The encoder configuration interface has been redesigned for ease of use.
     Related items are better grouped, there are fewer wizard-style screens to
     navigate and the dialog window itself is far smaller than before.

   * Performance modes have been adjusted

     Codec performance modes have been adjusted according to a rate-distortion model
     and with respect to functional use cases. This better balances video quality
     against the rate of encoding.

   * Two new performance modes have been added

     Extreme quality mode has been introduced to improve video quality at the expense
     of encoding time. Insane quality mode has been created to enable all bells and
     whistles regardless of encoding time.

   * Rate-distortion optimized H.263 quantizations

     Block search duration has been reduced for motion estimation leading to higher
     encoding rates.

   * New aspect-based resize

     It is now possible to resize given the source aspect and output width rather
     than absolute video dimensions.

   * Support for 4MV

     4MV is now supported creating clear improvements in picture sharpness and
     reducing ringing artifacts.

   * Improved deblocking

     A new proprietary deblocking algorithm improves visual quality and PSNR while
     reducing decoder complexity.



| 3. Known issues
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   * This build has been tested on Windows 2K and XP operating systems only

   * Automated update checking is disabled in this build

   * Rotation of product artwork is disabled in this build

   * It may not be possible to enter a bitrate over 4mbps under "unconstrained"
     profile

   * The Fusion installer will not remove old DivX codec Start menu shortcuts

   * The "Display settings" button in the encoder feedback window may not function
     and thus the additional setting controls may be unavailable

   * The DivX Decoder may fail when the display adapter is configured for 16-bit
    color (64K colors) or less.



| 4. Submitting feedback
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   Please submit all feedback for this beta release to the Beta Release Feedback
   Forum:

     http://forums.divx.com/eve/ubb.x?a=frm&f=911101651

   Useful information to include in your posts is (as appropriate):
   
     * CPU (brand, model, clock speed or performance index)
     * Motherboard (brand, model)
     * Memory (megabytes)
     * Official DivX version installed
     * Plasma build installed
     * A copy of the encoder settings (CLI string from the Settings page)
     * Encoding application (name, version)
     * Decoding application (name, version)
     * Video render path as reported by GSpot
     * Clear step by step instructions to recreate any problem you are reporting
     * Sample files



| 5. Version history
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     InertialConfinement (Fusion beta)

       Fixes

         * Minor GUI changes
         * Crash when encoding with GMC
         * Crash when encoding with QPel
         * Crash when using custom resize
         * Decoded video showed error on left border when dimensions not modulo 16
         * Frames written out-of-sequence at high bitrates
         * YV12 pass-through was not functional

       Changes

         * Feedback window is enabled by default

     CoreBurn (Plasma alpha)

       Fixes

         * Crash when changing the working path in the Settings window
         * Bitrate calculator icon not drawn
         * Log file did not reflect the number of passes executed
         * Not possible to change the bitrate while using the Feedback window
         * MPEG tools not active when appropriate
         * Changing the Psychovis settings caused the encoder to crash
         * Invalid CLI parameters caused the encoder to crash
         * Multipass failed if the nth pass had more frames than the 1st pass
         * nth pass crashed intermittently
         * Real-time priority was available on Feedback Window Lite

       Changes

         * Feedback window is disabled by default

       New

         * DivX DirectShow decoder
            o Improved post-processing
            o Improved performance

     Tritium (Plasma alpha)

       First Plasma release



| 6. Files in this bundle
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   The following files will be installed as part of this bundle:

   DivX Decoder Configuration Utility
     %Program files%\DivX\DivX Pro\config.exe
  
   DivX VFW Codec
     %Windows system%\DivX.dll

   DivX DirectShow Decoder
     %Windows system%\divxdec.ax

   Unicode support
     %Windows system%\unicows.dll



| 7. Technical support
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   DivXNetworks does not provide technical support for beta releases. You may
   discuss this beta with your fellow DivX users at the DivX.com forums:

     http://forums.divx.com