New:

• Added the DivX Converter with drag-and-drop and batch encoding
• Fixed compatibility with Macintosh OS X 10.4.x (aka "Tiger")
• Fixed compatibility with QuickTime 7
• Improved the Codec Configuration user interface
• Added significant playback performance enhancements
• Integrated MP3 audio encoder added

Changed:

• The Unconstrained profile was removed
• Various bug fixes were implemented

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New:

• User definable height and width for resizing (encoder).
• Generic MPEG-4 support. (decoder)

Changed:

• Pixel Aspect Ratio changed to the default setting of 1:1 (encoder).

Fixed (Encoder):

• Random crash from re-opening the settings GUI after previously closing it in the same session.

Fixed (Decoder):

• A delay of up to 8 days may occur when notifying users of an available update.

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New:

• Localized versions for French, German and Japanese
• Bi-directional coding using an adaptive method
• Fully adaptive multiple consecutive B-frames
• MPEG-2/H.263 quantization choice
• Update checking tool
• Automatic update notification for the DivX encoder
• Fast mode, revamped for better performance, compression and quality
• 3 point GMC support in the DivX decoder
• DivX MP3 Encoder now built into the codec
• 1-Step Encoding feature provides a simple way to produce studio-quality DivX video
• Black Edge Removal feature intelligently detects and removes black pixels from the edges of images

Changed:

• "Slowest" mode removed as the quality differential with "Slow" mode was insignificant, yet the performance differential was massive
• "Lambda" settings slider removed from the Feedback window

Improved:

Smooth playback supporting multiple consecutive B-frames

Quantizer, now using quant scale in video packets

Fixed (Encoder):

• A rare issue where rate control sometimes inserted Q=31 frames in video combining low light conditions, high bitrate and specific motion patterns
• Fastest mode to respect the user-specified average bitrate (Old "Fastest" behavior can be obtained by disabling profiles and performing 1-Pass, Quality-based encoding with Q=3)

Fixed (Decoder):

• Black screen when decoding old buggy MPEG-4 clips that lack VOL header
• Internal flush operation with "Smooth playback" feature
• Intra inverse quantization (type 1)
• Data partitioning clip
• Deblocking to no longer cause solid blocks to appear during playback

Known Issues:

• MV files are now disabled due to possible decision changes between 1st and nth pass

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Changed:

• Cosmetic GUI changes have been made to avoid confusion when using MV reuse and specific performance modes.
• Deinterlacing is back in as a feature set of the codec.
• Added bottom field first encoding.
• Pass-through mode has been removed due to video/audio sync issues.

Fixed:

• Encoder fixes:
• DivX 5.1.1 encoder is up to 112% faster (standard mode) than 5.1 (up to 30% faster than 5.05).
• Standard mode is 105% faster than 5.1.
• The quality produced by "Fastest" has been significantly improved.
• Blinking bottom line in "fastest" mode.
• Various cosmetic CLI fixes.
• New CLI option "-tff" for "top field first".
• Green output when exporting from a resized movie in Mac OS X 10.3.
• Inappropriate font in feedback window in Mac OS X 10.3.
• Fixed AVI incompatibility with hardware devices.
• Decoder fixes:
• Resolved a severe performance hit when using the deringing mode in postprocessing.
• Avoids buffer overruns with extremely small picture sizes (less than 80x32).
• Issue within B frames and deblocking.
• Installer fixes:
• Product activation process redesigned to be more intuitive and problem-free.
• Removing existing codecs.
• Crashing on Mac OS 9.x (limited cases) during the running life of the installer.

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New:

• Added a new high-quality psychovisual mode that includes the following features:
• Texture cortex masking and rate distortion algorithm.
• Hybrid mode (with texture cortex masking).
• Speed optimization.
• Chroma operation (this option is not enabled by default for performance reasons; to enable it, create an empty file on your desktop called "DivxPvShapingChroma.txt" for "fast" mode and "DivxPvSimpleChroma.txt" for slow mode; testing shows only 1-2% gains in JND tests).
• The decoder has been re-architected and is now 50 to 100% faster.
• The decoder now supports automatic post-processing during video playback.
• Added new features to the rate control modes of the encoder, including:
• A complexity vector log file.
• An API that allows real-time control of rate control.
• An API that allows forced I-frame insertion.
• Added a high-quality B-frame mode. The motion estimation for B-frames is improved, and the quantization modulation is changed.

Improved:

• Redesigned encoder GUI. The new GUI is more accessible and simplifies overall usage.
• DivX 3 compatibility. (There were no problems detected on any of the more than 60 hours of test content.)
• Performance of Nth Pass strategy planning performance.
• AVI importer's IMA ADPCM parser modified for more compatibility.

Fixed:

• A bug that caused the quantizer to overshoot the bitrate following a transition to a complex scene.
• A bug that limited the interframe change in quantizer to the ideal quantizer or plus or minus 2.
• A bug with the rate control video buffer verifier (VBV) that would enforce a "3 sec" max bitrate.
• Several bugs that affected Nth Pass encoding strategy planning.
• A bug that caused motion vector (MV) reuse to be non-functional.
• A bug that caused problems when MV reuse and psychovisual mode were used together.
• QuickTime 5 encoding and decoding support.
• Fixed bug with iMovie when importing media files with IMA-ADPCM or MP3.

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Changed:

• DivX AVI Importer now handles the importing of DivX AVIs with MP3/IMA ADPCM/AC3 audio

Fixed:

• Problem with DivX Player and AVI playback compatibility.
• Problem with audio encoding from a DV audio source in iMovie.
• Problem that caused Camino to crash on startup.
• Problem that caused some DivX Pro features to be disabled in GUI.

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New:

• Implemented DivX AVI Importer feature
• Addition of an option to set the frames per second of the encoding AVI file.
• Ability to encode ANY kind of QuickTime movie
• Activated smooth-playback decoding option.

Changed:

• Improved AVI Importer compatibility (support for broken AVI files)
• Improved video/audio synchronization
• Improving AVI Importer compatibility
• Improved movie encoding quality through QuickTime "High-Quality" option
• Removed DivX validator now that audio and video synch issues are resolved. Woohoo!

Fixed:

• Problemwith encoding from DV audio.
• Problem with encoding from VBR audio (such as AAC).
• Disappearing AVI bug which occasionally occurred with the video pass-through feature.
• Bug in the DivX AVI exporter that produced movies which didn't play correctly in vlc.
• The inability to use the DivX AVI exporter with movies that have layers, sprites, filters, etc

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Features:

• MPEG-4 Compatibility. DivX Pro is able to decode all levels of MPEG-4 Simple Profile, MPEG-4 Advanced Simple Profile, and H.263 video. It is also capable of encoding MPEG-4 Simple Profile. (ISO/IEC 14496-2).
• Integrated video encoding tools. DivX Pro includes built-in video encoding tools that are tightly integrated with the core codec. De-interlacing, resizing, cropping, and intelligence inverse telecine and deinterlacing tools are included in the software. These are commonly used tools that would normally have to be provided by separate applications. Integrating these tools directly into DivX Pro provides for faster performance and better results.
• Psychovisual modeling. DivX Pro includes psychovisual modeling, an advanced technique that takes into account knowledge about how the Human Visual System (HVS) works to compress moving video images into much smaller sizes without a loss of video quality. Expect up to 20% smaller file sizes from using this feature.
• Advanced support for existing encoding applications. All the advanced new features of DivX Pro are designed to work immediately with existing video encoding applications and require no application updates in order to work.
• DivX Certified Profile Verification
• Advanced Rate Control Algorithm. The DivX Rate control algorithm supports 1 Pass, 2Pass and Nth-Pass encoding.

Fixes from Beta:

• Bug in MP3 Encoder that prevented usage with DV movies
• Audio quality bug in IMA ADPCM compressor
• Problem with encoding resized QuickTime movies

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