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| CoreAVC Video Codec | |
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| Developed by | CoreCodec, Inc. |
| Initial release | ? |
| Stable release | 1.7.0.0 (April 15, 2008) [+/−] |
| Preview release | ? (Internal Beta) [+/−] |
| Written in | ? |
| OS | Windows |
| Available in | ? |
| Genre | Codec |
| License | Proprietary |
| Website | www.coreavc.com |
CoreAVC is a proprietary Windows codec for decoding the H.264/MPEG-4 AVC (Advanced Video Coding) video format.
The decoder is currently one of the fastest software decoders, and even matches some hardware-based ones.[1] This may allow computers with less processing power to play back lower-resolution AVC video content, and computers with more processing power to play high-definition video. The quickness of the codec is based on multi-threaded decoding. At the moment this technique is not consequently used by freely available codecs like the x264 and ffmpeg/libavcodec project family, but the multi-threading approach is very useful for the decoding of high-definition video (HD) H.264/AVC streams. The price for the CoreAVC codec with the most features is around $15.
In December 2005, CoreCodec, Inc. has indicated that it will have a matching video encoder in the future.[2] CoreAVC is included as a part of the CorePlayer Multimedia Framework and is now also used by Joost.[3]
The CoreAVC-For-Linux DMCA complaint
An open source project named CoreAVC-For-Linux hosted at Google Code patches the loader code in the open source media player program MPlayer and allows it to use the Windows only CoreAVC DirectShow filter in Free Software environments. It does not include CoreAVC, but simply allows MPlayer to make use of it. This project also contains patches to use the proprietary codec in MythTV, open source software for Home Theater Personal Computers and the media player xine.
In May 2008 the CoreAVC-For-Linux project was taken down by Google due an DMCA complaint[4]. There was speculation about this DMCA complaint, because the project as a wrapper did not use any copyrighted material, but maybe reverse engineering techniques were used without prior permission, which CoreCodec, Inc. interpreted as a violation of the DMCA.[5] CoreCodec has stated that reverse engineering was the reason, and it was in error[6] and has apologized to the community[7]. The author has said "CoreAVC-for-Linux should be back online soon"[8].
References
- ^ CoreAVC stronger than AVIVO & PureVideo ? (April 2006)
- ^ CoreCodec/H.264 Codec "CoreAVC" - Doom9's Forum
- ^ Joost - FAQ: Technology
- ^ CoreCodec complains of copied code. Chilling Effects Clearinghouse (2008-04-30). Retrieved on 2008-05-05.
- ^ DMCA takedown of coreavc-for-linux/CoreCodec Homepage (May 2008)
- ^ DMCA takedown of coreavc-for-linux, message 5780 (May 2008)
- ^ DMCA takedown of coreavc-for-linux, message 5785 (May 2008)
- ^ DMCA takedown of coreavc-for-linux, message 5783 (May 2008)
External links
- The CoreAVC H.264 Homepage
- CoreCodec Homepage
- Doom9.org Discussion on CoreAVC
- Openlaw - the current US law and Reverse Engineering
- coreavc-for-linux - Google Code
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