Hi, I want to implement some sort of "post header checksum" for JPEG images, i.e. the checksum should only change if the actual image data was altered, EXIF/IPTC metadata modifications should have no effect. My plan to do this is to scan for the JPEG SOI marker, read n bytes after this marker and calcultate an MD5/SHA checksum for this.
Can PIL tell me the byte offset of this marker? Greetings, Franz
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