Using efficient video coding formats, a 2 gigabyte memory card can hold around five hours of video content with audio. Compression techniques and settings can increase the amount, but at the cost of video quality.
These formats are created by codecs, or software that codes and decodes a particular type of video or audio as the file is being accessed. Digital cameras, camcorders and cellphones that record raw video use less compressed formats, as higher levels of compression take more time to process. This makes it difficult for small, portable devices to handle both coding into efficient formats quickly and keeping up with the live recording, so less efficient formats are used. Software that converts an .avi video file to an .mkv video file can cut the size in half.Learn More
For high-definition photos at 250 kilobytes of memory each, a 1-gigabyte memory card holds 4,000 pictures. HD wallpaper images are about 250 kilobytes; personal pictures are smaller and require less memory. Super-HD images of 2,560 by 1,600 pixels are up to 1.6 megabytes. A 1-gigabyte card holds 625 such photos.Full Answer >
Though information varies on the exact amount, the SD Association rates a 2 gigabyte SD card at approximately 700 images from a 10 megapixel camera. Storage amounts vary based on the number of megapixels in an image, the file type of the image and the compression used for the image.Full Answer >
To format an SD card, connect the SD card to your computer. After backing up the data on the SD card, use the built-in formatting utility on the Windows operating system to format the card.Full Answer >
An SD card, also known as a Secure Digital Memory Card, is a small data storage device used in cell phones, digital cameras and other mobile electronics. They are popular due to their fast rate of memory storage. The term SD card encompasses a few different types of cards.Full Answer >