Tapeless Media (Part One)

This entry was posted on Tuesday, January 11th, 2011 and is filed under Latest News.

Here at the Web Video Store we pride ourselves on fast, efficient project turnaround times, while still maintaining the highest level of quality. In order to maintain this reputation, our equipment must also adopt the same fast and efficient qualities. We are very proud owners of the JVC GY-HM700E camera…


It records continuously onto two SDHC memory cards and SXS (with optional adapter) and because it’s native file recording is .mov, it means we can edit immediately in Final Cut Pro (or Premiere) without converting or transcoding, saving an immense amount of time.

SDHC and SDXC cards


With more and more cameras favouring HDD, SDHC and SDXC recording formats and with Lexar’s recent 2011 release of their 128GB SDXC card, the future looks pretty set for tapeless recording. This week’s web video blog will be split into two parts as I outline a couple of key points with regards to SDHC cards and SDXC cards.


So, lets start at the beginning, in part one, what are SDHC and SDXC cards? SDHC and SDXC cards are an extension of the original SD card media format and simply offer more storage for more digital devices. SD translates as Secure Digital; HC for High Capacity and XC eXtended Capacity.


Which card is best for video?


First of all, you need to make sure you have the correct media for your camcorder. Check with the manufacturer’s guide to confirm compatibility as devices that do not accomodate SDHC and SDXC memory cards won’t register. It’s worth noting though that both SDHC and SDXC are backwards compatible. This means that an SDHC card will work in an SDXC device but not vice versa.


There’s quite a broad range of SDHC cards to purchase ranging from 4GB, 8GB, 16GB to 32GB. How much you film will obviously equate to the storage you require.


The memory capacity for the SDXC cards start a little higher ranging from 48GB, 64GB and reach a maximum of 128GB thanks to Lexar’s latest offering. The massive128GB card is set to make its release in early spring 2011.


So which is format is best for video? It really does depend on what you will be shooting. If your on-location, it’s good advice to take the maximum capacity that your budget will stretch to as no cameraman likes changing/swapping memory halfway through a shoot.


What are speed class ratings?


The speed class rating number (number with C wrapped around on the card) corresponds to the transfer rate measured in megabytes per second. This is particularly important to video. The recorded resolution and format determines the amount of steady stream data which needs to be a minimum of 6 as this is the minimum transfer time for high definition video when using SDHC and SDXC cards. In simple terms the faster the memory the higher the class number. If an error message should present itself on the device notifying you to either change media or downgrade your current settings always resort back to the manufacturer’s guide to make sure you have the correct media.


A speed class of 10 is also available for both cards but is there a significant difference? In part two I answer this question as well as comparing both SDHC and SDXC formats, having a gander at Lexar’s 128GB SDXC card and looking at the future of tapeless video, stay tuned!