[KevinH]

Hi,

I will add this change to kindleunpack.py as well so that it operates correctly even without operating inside a calibre environment.

It will appear in the upcoming KindleUnpack v0.63.

Thank you!

Kevin

Originally Posted by NiLuJe

That said, there's no JFIF, EXIF or 8BIM anywhere in that file, so Kovid's tweaked imghdr doesn't catch it either. To keep false-positives at bay, I tweaked my extra check a bit:

                # imghdr only checks for JFIF or Exif JPEG files. Apparently, there are some with only the magic JPEG bytes out there...
                # ImageMagick handle those, so, do it too.
                if imgtype is None and data[0:2] == b'\xFF\xD8':
                    # Get last non-null bytes
                    last = len(data)
                    while (data[last-1:last] == b'\x00'):
                        last-=1
                    # Be extra safe, check the trailing bytes, too.
                    if data[last-2:last] == b'\xFF\xD9':
                        imgtype = "jpeg"