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MJPEG (Motion JPEG)

MJPEG (Motion JPEG)

Motion JPEG (MJPEG, Motion Joint Photographic Experts Group, FourCC: MJPG) is a video compression format where each frame is separately encoded using JPEG.

Unlike MPEG video compression, which compresses between frames, MJPEG has a lower compression bit rate, making encoding and decoding relatively easier without requiring excessive computational power, allowing software or chips to easily edit Motion JPEG. For this reason, some mobile devices, such as digital cameras, use Motion JPEG for short video encoding.

For QuickTime format, Apple defines two types of encoding: MJPEG-A and MJPEG-B. MJPEG-B no longer retains valid JPEG interchange files, lacking headers, which means it cannot save individual frames as JPEG files.

Compared to other uncompressed formats (such as RGB, compression ratio 1:1; YCbCr, compression ratio 1:1.5) and MPEG (1:100), a data rate of 29 Mbit/s is quite high, resulting in relatively large file sizes.

  • The above article content is extracted from Wikipedia

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2024-11-22 21:23:16
This website was last updated on November 18 2024 12:16:31.
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