At the moment, I am using my own xmp uwdepth tag. The logic I am using is:
- try to write uwdepth.
- if that write failed, try to write to an xmp sidecar file.
Following the same logic, would it be reasonable to:
- try to write to the exif tag
- if that write failed, say for a .mov file, just ignore the fail and carry on.
OK, a write might fail for another reason but this is just my own stuff and I can live with that. It seems a tad pointless to try and identify all file types that might allow exif tags.
sounds like a 3 step process:
1. Try to write the EXIF tag
2. Try to write the XMP tag
3. write to a sidecar
- Phil