JPEG Flashpix stream bytes

[neebah]

I'm looking at the bytes in the APP2 Flashpix stream.  Exiftool lists a screennail for this section with about 51000 byes of binary data.  When I look at the bytes I see a BLOB section, but before that I see 7 properties.  One of them is the Code Page.  The property numbers are 1-7.  Do you have any info on what these might be. 

[neebah]

So I've deduced that Property 1 is the code page
Property 2 has a value of 640
property 3 has a value of 480
Property 4 has a value of 1.  It's also a 32 bit float
property 5 has a value of 3
property 6 has a value of 0

To me it seems that we have resolution, resolution, and then I don't know.  are these Flashpix image Tags

[Phil Harvey]

All of the information I used to decode the FlashPix are listed in the FlashPix.pm source code, which is available in the full distribution (among other places).  I don't have time right now to look into this, but you might want to check these references.

- Phil

[neebah]

Just checked.  It says for the ScreenNail to strip off the screennail header.  No other information. 

[Phil Harvey]

I meant the references in the code:

Code Select Expand

# References:   1) http://www.exif.org/Exif2-2.PDF
#               2) http://www.graphcomp.com/info/specs/livepicture/fpx.pdf
#               3) http://search.cpan.org/~jdb/libwin32/
#               4) http://msdn.microsoft.com/en-us/library/aa380374.aspx


- Phil

[neebah]

Oops sorry about that.  I did check those as well.  Will keep digging.