page_title: AVCHD
section_title: Solid-state memory card
hierarchical_section_title: AVCHD / Media / Solid-state memory card
caption_attribution_description: English: Canon HF100 tapeless camcorder with PQI 4GB SDHC card.
context_page_description: AVCHD is a file-based format for the digital recording and playback of high-definition video. It is H.264 and Dolby AC-3 packaged into the MPEG transport stream, with a set of constraints designed around the camcorders.
  Developed jointly by Sony and Panasonic, the format was introduced in 2006 primarily for use in high definition consumer camcorders. Related specifications include the professional variants AVCCAM and NXCAM.
  Favorable comparisons of AVCHD against HDV and XDCAM EX solidified perception of AVCHD as a format acceptable for professional use. Both Panasonic and Sony released the first consumer AVCHD camcorders in spring of 2007. Panasonic released the first AVCHD camcorder aimed at the professional market in 2008, though it was nothing more than the FLASH card consumer model rebadged with a different model number.
  In 2011 the AVCHD specification was amended to include 1080-line 50-frame/s and 60-frame/s modes and stereoscopic video. The new video modes require double the data rate of previous modes.
  AVCHD and its logo are trademarks of Sony and Panasonic.
context_section_description: Many AVCHD camcorders employ Secure Digital or "Memory Stick" memory cards as removable recording media. Solid-state memory cards offer rewritable storage in a compact form factor with no moving parts. 
  Panasonic and Sony chose removable flash memory as the sole type of recording media in their professional AVCHD lineups, specifically AVCCAM and NXCAM.
  Until 2010, Sony insisted on usage of its own memory card format - Memory Stick. Since 2010, Sony has allowed using both Memory Stick as well as Secure Digital cards in its consumer and professional camcorders. Panasonic as well as other manufacturers of AVCHD camcorders use Secure Digital cards as removable flash media. Most models accept Secure Digital High Capacity cards (SDHC), while some models are also compatible with Secure Digital Extended Capacity (SDXC) cards, which offer higher transfer speed and capacity.
  Pros:
  Compact and lightweight.
  Does not require time for spin-up and initialization.
  Not vulnerable to magnetic fields.
  Can withstand a wider range of air pressure, humidity and vibration than HDDs.
  Can be easily backed up to DVD for viewing and for long-term archiving.
  Can store mixed media content, including still images like snapshot photos and still-frame captures.
  The recording section contains no moving parts, thus operation is almost silent; also a camera can be made more compact and less prone to mechanical damage in case of being dropped.
  Most new computers, many TV sets and Blu-ray Disc players, as well as many personal portable media players have built-in card readers and can play AVCHD video directly from a card.
  Cons:
  More expensive per minute of recording than a built-in HDD or DVD media.
  Not reliable for long term storage and may wear out more rapidly than expected, especially the cards made with MLC technology as opposed to cards using SLC technology.
  Vulnerable to electrical damage, such as static discharge, and too high temperature.
  A bad memory card can cause data corruption, causing loss of one or more clips.
caption: Canon HF100 camcorder with a partially inserted Secure Digital card.
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