Extracting specific EmbeddedImage(s) from a VNT

[eeeps]

I have been handed a VNT file and I am trying to get anything I can out of it.

Exiftool can see a bunch of PNGs in there, great! https://gist.github.com/eeeps/3ebf194ed6f209c3fad43a98629517c2

But I haven't been able to figure out how to extract more than the first one, with -b. How to I export specific EmbeddedImages, or better yet all EmbeddedImages?

—eric

[Phil Harvey]

Hi Eric,

Try this:

exiftool -embeddedimage -a -b -W "%d/%f_%t_%g3.%s" FILE

- Phil

[eeeps]

Phil!

It worked!

For mysterious reasons I had to delete the `%d/`:

Code Select Expand

% exiftool -embeddedimage -a -b -W "%d/%f_%t_%g3.%s" prod29550692_E22920216054_TQ_OD23_pp3s0x.vnt
Error creating /prod29550692_E22920216054_TQ_OD23_pp3s0x_EmbeddedImage_Doc1.png
(snip)
    1 image files read
   35 files could not be read
    0 output files created


Code Select Expand

% exiftool -embeddedimage -a -b -W "%f_%t_%g3.%s" prod29550692_E22920216054_TQ_OD23_pp3s0x.vnt
   35 output files created

But after that, it worked a treat. THANK YOU!!!

—eric

[StarGeek]

It probably should have been %d%f_%t_%g3.%s or %D/%f_%t_%g3.%s

The %d variable includes a slash, the result was dir//file. Windows cmd ignores that, but I'm not sure how that is handled on other systems.

[Phil Harvey]

Right.  The "/" shouldn't be there.  A double slash is fine on any system, but if there is no directory specified and %d is empty then the leading slash represents the root directory, which is the reason for the failure here.

- Phil

[eeeps]

Makes sense! Thank you.

One more, possibly very simple question. On line 22 of the output I posted earlier, there is a PNG in the "Root Directory", that is not in an EmbeddedImage tag. How do I extract that?

—eric

[Phil Harvey]

Hi Eric,

The embedded images are extracted from the root entry, so you are just seeing one of those.

- Phil

[eeeps]

Makes sense, thank you!

I am being told there is some sort of 3D data hiding in this Vignette file, as well, of either the "planar" or "flowline" types described here: https://experienceleague.adobe.com/docs/dynamic-media-developer-resources/image-serving-api/image-rendering-api/http-protocol-reference/http-protocol-syntax/vignettes/c-ir-vignettes.html?lang=en

I'm assuming exiftool can't see or extract that -- I'm not even sure what format it's in -- but you've been so helpful in this thread I figured it was worth an ask.

Possibly (?) related; the `exiftool -v` output from a different Vignette file contains two tag names (`VmtFile` and `PolFile`) that I don't see documented anywhere. Any idea what those are?

Thank you!!
—eric

[Phil Harvey]

Hi Eric,

Sorry, but I haven't seen the 3D data you mention, and I don't know what VmtFile and PolFile signify.

- Phil

[eeeps]

Phil, no worries and many thanks. If you're curious I can ask if I can share this file publicly; if not, I understand that I've already taken up a good chunk of your time, and your help thusfar has been invaluable.

—eric

[Phil Harvey]

Sure, please share the file and I'll take a look at it when I get a chance.

- Phil

[eeeps]

I'm not sure if I have permission to share the files publicly. I emailed them to you directly.

No rush, and no expectations of any reply. Thank you,
—eric

[eeeps]

Phil,
Is there any way to extract the contents of VmtFile and PolFile using exiftool? Even if we don't know how to interpret them yet?
Thanks,
—eric

[Phil Harvey]

ExifTool deals with metadata only, not the actual file data.

- Phil