Windows Essentials Codec Pack, or WECP for short, is one of the most comprehensive collection of Media Codecs, Filters, Splitters and other tools that will enable you to play 99% of all the movies, music and flash files you download off the internet. WECP also includes a set of powerful filters that can enhance the video quality as well as audio quality and it comes complete with an automatic update service that will keep your computer up-to-date with the latest software upgrades as soon as they become available.

Changelog:

Bugfixes
* Fixed 64-Bit installer issues
* Fixed a lot of issues with mp4 muxer
* Better support for VC-1 in MPEG Transport streams
* Various H.264 and MPEG-2 seeking issues fixed
* Several memory leak fixes
* Subtitle fixes:
o Don't show closed caption if "Subtitles" is not checked
o Non-DVD subtitles: check if "Subtitles" is checked before showing subtitles
o Setting "Maintain outside text inside screen" was not always applied correctly
o Subtitle file could not be disabled during DVD playback
o Duration of SSA move tags was randomly applied
o Various fixes to alignment, line spacing, movement and positioning of ASS, SSA and SRT subtitles
o Several crash fixes
* Fixes in the Audio mixer and LFE crossover filter:
o Center and LFE were too loud when downmixing 5.1 -> 2ch
o If the original sound had LFE channel, it was overwritten
o If the center channel existed, left and right channels were ignored
* Several MLP/TrueHD/LPCM decoding fixes
* Playing a CSS-protected DVD using MPC or MPC-HC caused a crash in certain scenarios
* Fixed DVD menu positioning and freeze issue
* Fixed several crashes in WMP11 and Media Center
* ffdshow.ax failed to register when a registry key was missing
* Removed black lines in Perspective Correction filter
* ffdshow would crash when using the Grab filter and the Resize filter with aspect ratio correction
* Many fixes across multiple ffdshow components including OSD, deinterlacing, remote API, DVD and MPEG-2 playback

New and improved features
* Added support for WebM files
* Added AC-3 in MP4 support
* Added a 64-bit version(s)
* New multi-threaded H.264 decoder: ffmpeg-mt
* DTS-HD and Dolby TrueHD bitstreaming support for the ATI Radeon HD5000 series, ASUS Xonar sound cards and Intel Clarkdale CPUs
* New color space converters:
o Supported input color spaces: progressive YV12, progressive NV12, YV16, YUY2
o Supported output color spaces: RGB24, RGB32
o High quality chroma upscaling
o Added dithering to reduce "banding"
o Support for color primary parameters such as ITU-R BT.601/709, input and output levels
o RGB conversion done in 11-bit or higher
o Significant improvements in YV12 -> YUY2, YUY2 -> RGB, and YV12 -> RGB conversion performance
o Requires SSE2-capable CPU; for better performance multi-core CPU recommended
* New RGB conversion options:
o Output levels ("Computer monitor" or "TV/Projector")
o YCbCr specification "Auto" (uses H.264's VUI or width > 1024: BT.709, width <= 1024: BT.601)
* Various improvements in the Subtitle filter:
o Improved rendering quality, memory usage and performance
o General code cleanup
o SSA/ASS subtitles: better compatibility (support for position & move tags), better calculation of line wrapping, new dialog to configure ASS specific options. Also support added for ASS tags within SRT subtitles (SubViewer)
* FFDShowAPI: .NET wrapper around FFDShowRemoteAPI allows integration of ffdshow with third-party applications
* FFDShowRemoteAPI:
o Improved subtitle/audio streams detection; now compatible with most filters handling the IAMStreamSelect interface
o New command to disable FF/RW OSD
o When using absolute positioning, x and y coordinates are now representing pixels instead of percentages
o Added new parameter to determine the duration in which a message will be displayed
* OSD settings are now based on the current ffdshow preset; this allows turning OSD on/off using the "Automatic preset loading" mechanism
* Buffered video RAM access improves video memory access in certain scenarios
* AviSynth filter now uses AviSynth's frames for buffering which improves performance and reduces the filter's memory usage
* "Max. amplification" in the Normalization filter will only be applied after pressing "Apply"
* Better handling of DVD menus
* Improved autocrop algorithm
* Added RealVideo 8 (RV30) support
* Added soft telecine detection
* Added several new preset autoload conditions
* libavcodec is now used by default to decode Theora videos
* libavcodec is now used as Dolby TrueHD decoder instead of MLP
* Various updates to libavcodec

Program Information Category: Codec Type: Free Version: 3.0 Size: 15.2MB Works on: Windows Product page: here