Glossary Term: JPEG
A JPEG is a way of storing images on a digital device such as IP CCTV cameras, digital cameras and mobile phones. JPEG is a compressed format, giving a greatly reduced file size compared to image dimensions. The compression is adjustable but greater compression rations will result in loss of data and as such grainier pictures.
JPEG stands for Joint Photographic Experts Group, who created the format when trying to produce a smaller file size for transmitting images across the internet. Most IP CCTV cameras support this format due to the reduced file size which helps to reduce bandwidth and hardware usage.
[...] An MJPEG Movie consists of many JPEG images, one after another. Since JPEG is a compressed format, so too is MJPEG, providing a low file size when compared to image dimensions. Each frame of an MJPEG movie has no reference to the next, so inter-frame compression is not used, making MJPEG movies larger than similar MPEG movies. However, since there is no inter-frame compression the file size of an MJPEG movie will not change dependant on the complexity of the images used. This means the file size is a lot easier to estimate when looking at recording solutions. [...]