JPEG stands for the Joint Photographic Experts Group standard, a standard for storing and compressing digital images.
Motion-JPEG extends this standard by supporting videos. Unlike MPEG, MJPEG compresses and stores every frame rather than only the differences between one frame and the next. Thus it requires more space than MPEG, but it is more efficient when rapid scene changes are involved, and easier to edit.
If you use our inbuilt converter, you'll end up working with an MJPEG clip.
See also: