Re: CFD: eXIF 2017-0207

On Sun, Feb 12, 2017 at 10:29 AM, Phil Harvey <phil-CIeU6mJ2MbMd166Dz3SrqbDks+cytr/[email protected]> wrote:
> If you gave me a link to the sample I could take a look, but it is not uncommon to
>have preview pointers referencing data outside the EXIF segment.

That's what I suspected and it does seem that in both the cases I get
the warning the entries relate to the preview.  Here are the exiv2
warnings:

$ pngdumpmeta --exif <Alaska.png >/dev/null
Warning: Directory OlympusCs, entry 0x0101: Strip 0 is outside of the
data area; ignored.
$ pngdumpmeta --exif <BigelowLakes.png >/dev/null
Warning: Directory NikonPreview, entry 0x0201: Data area exceeds data
buffer, ignoring it.

Neither "exif" nor "exiftool" output any messages however I don't
think either default to outputting those specific directories,
pngdumpmeta just iterates though the whole set of EXIF data.  The
*original* JPEG images are here:

https://drive.google.com/drive/folders/0Bx8MRyhJu3rTaW50eHFVQWRvYXM?usp=sharing

In the "CC Atribution-ShareAlike" folder; Alaska.jpg and BigelowLakes.jpg

The EXIF (APP1) data was copied verbatim.

-- 
John Bowler <[email protected]>
+1 (541) 450-9885
PO BOX 3151
KERBY OR 97531-3151
USA

------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, SlashDot.org! http://sdm.link/slashdot