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Note that MJPG is a video compression format and is not identical to a standard .jpg file. Even if your camera outputs MJPG, you still need to process it if you want a standalone image file. How to Save Your Captures

Below is a detailed blog post based on the concepts covered by that topic. 53455028.jpg

If you need the compression of a JPEG, you cannot simply rename the buffer. You must use a library like jpeglib to compress the raw frame data before writing it to the disk. Summary Checklist for Developers Note that MJPG is a video compression format