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-   -   SD Association spells out minimum card speeds for 4K2K video playback (http://forums.macnn.com/113/tech-news/505708/sd-association-spells-out-minimum-card/)

 
NewsPoster Nov 7, 2013 06:13 PM
SD Association spells out minimum card speeds for 4K2K video playback
The <a href="http://macnn.com/rd/297925==https://www.sdcard.org/home/" rel='nofollow'>SD Association</a> that controls the guidelines for SD storage cards today announced a new high-performance option and symbol specifically designed to support a wide array of 4K or 2K (the latter also known as 1080p or "Full HD") television and video products. A new Ultra High Speed (UHS) Speed Class 3 (U3) symbol will indicate products capable of recording 4K or 2K video and will operate exclusively on SDXC UHS-I and UHS-II memory cards and devices and SDHC UHS-I and UHS-II memory cards and devices.<br />
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The UHS Speed Class 3 has defined 30MB per second constant minimum write speed to ensure high-quality video recordings for the new standard. Cards that meet the new spec will be able to record 4K or 2K video, live broadcasts, and other high bit-rate content on high-performance cameras such as Digital Single Lens Reflex (D-SLR), Digital Single Lens Mirrorless (D-SLM), camcorders and video cameras. <br />
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New devices offering the UHS Speed Class 3 will be backwards compatible, and will work with existing SD memory cards. UHS-I cards are capable of pushing up to 104MB per second, with UHS-II cards supporting speeds up to 312MB per second.
 
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