XnView Software

Hello,

I wanted to convert a lot of big TIFF files to JPEG2000, but unfortunately all EXIF data get lost.

I was using XnConvert too and there is under "Option" --> "Preserve Metadata", but it doesn't preserve EXIF data.

I already searched this forum, but I only found this:
http://newsgroup.xnview.com/viewtopic.p ... xif#p67027

Is there any way to use a better format than TIFF or JPEG which saves the EXIF data too?

I just got the idea to export all EXIF data to a text file prior to the conversion but again unfortunately there is no such action in XnConvert.

Thanks

No sorry, currently jpeg2000 encoder doesn't support metadata

Hi Pierre,

thank you for your quick answer. Unfortunately I did not find any software which encodes to JPEG200 including EXIF data.

But as I found, JPEG2000 is the only format which compresses images lossless. Am I right?

Now I found the following solution for me:

1) I export all EXIF data into text file by using ExifTool.

2) Then I convert to JPEG2000.


What do you think to create an action in XnConvert to export EXIF data into a text file?

Best regards


P.S.:
XnView and XnConvert are really great pieces of software. I think there is nothing better out there. Many years I used IrfanView but then suddenly I found XnView and it is much better than anything else.

But as I found, JPEG2000 is the only format which compresses images lossless. Am I right?

Nope. Although it does get some of the best compression when dealing with photographic images. I don't know if any of the other lossless formats handle exif data or not though (I never bother with metadata myself).
PNG is lossless of course, JPEG-XR also has a lossless mode (and gets almost as good compression as jpeg2000, but much faster). LWF has lossless, but it's a proprietary format, so it shouldn't really be used unless you have to.

There is one JPEG2000-encoder that preserves metadata including EXIF, Adobe Photoshop's JPEG2000-plugin that writes extended JP2-files. Only odd thing with this is that it seems to use it's own uuid-code so other programs doesn't recognize it, had to check it with hexeditor that it's all in there.