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AVCHD (Advanced High Definition Video Coding)

AVCHD (Advanced High Definition Video Coding) is a file-based format for high definition video digital recording and playback. It is packaged into the MPEG transport stream with H.264 and Dolby AC-3, with a set of constraints designed around the camcorders. 

The format was developed jointly by Sony and Panasonic and was introduced primarily for use in high definition consumer camcorders in 2006. Related specifications include the AVCCAM and NXCAM Professional variants.

Favorable similarities between AVCHD and HDV and XDCAM EX solidified AVCHD 's reputation as a format suitable to professional use. In Spring 2007 both Panasonic and Sony launched their first commercial AVCHD camcorders. In 2008, Panasonic launched the first AVCHD camcorder targeted at the professional market, but it was nothing more than the FLASH card consumer model (which was then discontinued) rebadged with another model number. 

The AVCHD specification was updated in 2011 to include the 1080-line 50-frame / s and 60-frame / s (AVCHD Progressive) and stereoscopic (AVCHD 3D) modes. The new video modes allow twice as much data as previous modes.

AVCHD, and its name, are Sony and Panasonic trademarks.

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