I've been searching for a couple days now and still haven't found a good definitive description of a JPG file. I have some general formats, but the format and the file itself does not coincide. The problem comes with the "ff e1" header bytes. The file contains:
Alledgedly, the two bytes after "FF Ex" represent the length of the current block. In this case, the size at 16h clocks in at a whopping AB4h bytes. But the next block is a mere 15Ch bytes after the "FF E1"

Is there a better definition somewhere? wotsit.org was helpful, but no explanation for this problem is in their documentation (unless I missed it or misread)

Thanks

__________________

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You can get the source code for jpeg compression here:
http://ftp.belnet.be/pub/mirror/suns...0/jpegsr6b.zip

I found them from this site: http://www.computerbuddies.us/what_is_a_jpg.htm

Or maybe your answer will be found here: http://www.faqs.org/faqs/jpeg-faq/ and here: http://www.faqs.org/faqs/compression-faq/

Rob