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Handling of metadata (EXIF) #9

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wwinniww opened this issue Jul 9, 2024 · 0 comments
Open

Handling of metadata (EXIF) #9

wwinniww opened this issue Jul 9, 2024 · 0 comments

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@wwinniww
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wwinniww commented Jul 9, 2024

Is your feature request related to a problem? Please describe.
I use the pre-compiled windows versions of cjpegli and djpegli. What I noticed is that djpegli transfers existing metadata from JPG files to PNG files in form of zTxt chunks.
I don't know any program that can read that kind of metadata from PNG files.
cjpeg doesn't read metadata from PNG files. There are no command line options in both programs to specify metadata handling.

Describe the solution you'd like
I'd like to see command line switches to enable or disable transfer or processing of metadata.
When enabled cjpegli should transfer EXIF metadata in PNG files to JPEG files.
Display info at command line when metadata is written to the output file.

The recent versions are inconsistent in the way that djpegli always handels EXIF metadata and cjpegli doesn't handle metadata.

Describe alternatives you've considered
Don't handle or transfer metadata between files at all.

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