Motion JPEG (M-JPEG) is a video format that connects successive JPEG still frames to create motion. Before the MPEG moving picture format became standard, various Motion JPEG formats were developed. Unlike MPEG, Motion JPEG does not use interframe compression, making it easier to edit.
One of the benefits of Motion JPEG is its simplicity. Each frame is a complete keyframe, allowing for unlimited cutting and pasting when editing. On the other hand, MPEG uses alpha frames or “difference” frames to bridge the gap between keyframes, making editing more challenging.
While MPEG has become the industry standard for video compression, some video editors may still support Motion JPEG for compatibility. Additionally, MPEG can be encoded without interframe compression to make editing faster.
What is interframe compression?
Interframe compression is a video compression technique where only keyframes (complete images) are stored as full images, while subsequent frames are recorded as the changes or differences from the previous frame. This leads to smaller file sizes but can make editing more challenging.
Is Motion JPEG still useful today?
Motion JPEG is still valuable in certain circumstances, particularly when working with older hardware or software that may not support newer video codecs. It can also be useful when working with small video files or when editing a smaller number of frames.
While MPEG is the dominant video compression format today, Motion JPEG still has its uses and advantages. Its simplicity and compatibility make it a viable option for some video editors, particularly those working with older hardware or software.