have you looked in ffprobe?
its part of ffmpeg.
Alternatively, OIIO has a few command line or python binding I believe that
would allow you to read the header.
Finally Cortex has also very good architecture to do just that:
import IECore
reader = IECore.Reader.create("path/to/image")
header = reader.readHeader()
from there the header object behave like a dict, so resolution is
"displayWindow".
hope that helps!
cheers
Lucien_______________________________________________
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