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Sorenson Codec




The Sorenson Video codec first appeared with the release of QuickTime 3 on '' on March 11 , 1999 . Sorenson Video 2 was released in March 1999; however, it mainly included minor improvements and optimizations to the Developer Edition of the encoder, as movies encoded with it were backwards compatible with the Sorenson Video decoder. An improved Sorenson Video 3 codec debuted with the release of QuickTime 5.0.2 on July 1 , 2001 . As Apple began to move away from proprietary codecs with its embrace of MPEG-4 , Sorenson Media next licensed the newest version of the codec to Macromedia as Sorenson Spark (Sorenson H.263 ), released with Macromedia Flash 6/MX on March 4 , 2002 . {Link without Title}

The specifications of the codec were not public, and for a long time the only way to play back Sorenson video was to use Apple 's QuickTime player, or the MPlayer for Unix/Linux, which in turn Piggy-back ed Microsoft Windows DLL -files extracted from Apple's player.

According to an anonymous developer 1 of FFmpeg , Reverse Engineering of the SVQ3 codec revealed it as a tweaked version of H.264 . The same developer also added support for this codec to FFmpeg , making native playback on all platforms supported by FFmpeg possible.


REFERENCE

# Deconstructing H.264/AVC on DrunkenBlog, July 28, 2004.


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