Hi,
When writing the preview into a jpg image with the following command:
exiftool "-PreviewImage<=preview.jpg" image.jpg
It doesn't seem to work very reliably. It works for images from some camera models, for others it'll give me:
0 image files updated
1 image files unchanged
with no other info.
I've read this page (http://www.exiftool.org/writing.html) and it gives some helpful guidance, but before I dig my way into the specific bytes of the jpg format myself, I just want to be sure there's not something else I'm missing in the exiftool doc (like some kind of force-write), a workflow that might work, or any other simple solutions.
Thanks!
ExifTool will update some existing preview images but won't add new ones. The whole preview image situation is a real mess, and there are very many ways that they are stored in JPEG images. Personally I would recommend avoiding the whole situation.
- Phil
Haha, good suggestion Phil. Thanks.