Warning: Sorry, UserData:Keywords doesn't exist or isn't writableģ. UnknownThumbnail : (Binary data 123911 bytes, use -b option to extract)Įxiftool -m -P -overwrite_original_in_place -UserData:Keywords='Keyword1,Keyword2'. There is also 'UserData:Keywords' but it is not writable: I can edit them with a command below but after that neither QuickTime Player nor Photos.app display them anymore:Įxiftool -m -P -overwrite_original_in_place -UserData:Title='Title' -UserData:ClipFileName='Title' -UserData:Description='Description' -UserData:Author='Author'. On the other hand, Final Cut Pro 10.5.1 inserts the following tags to. Warning: Sorry, QuickTime:HandlerType doesn't exist or isn't writableĪnd then even if I can successfully add and edit those ItemList tags, QuickTime Player and Photos.app don't display them anymore.Ģ. I can edit those tags but if I delete the last ItemList tag, also that 'QuickTime:HandlerType=Metadata' is removed and I can not add it back:Įxiftool -m -P -overwrite_original_in_place -QuickTime:HandlerType=Metadata. Those ItemList tags also seem to need 'QuickTime:HandlerType=Metadata' tag so that QuickTime Player and Photos.app can display them: QuickTime Player's Get Info displays the Title, Description and Author and Photos.app 6.0 Title and Description. m4v it exports and I can edit them with a command like:Įxiftool -m -P -overwrite_original_in_place -ItemList:Title='Title' -ItemList:Description='Description' -ItemList:Author='Author' -ItemList:Keyword='Keyword1,Keyword2'. Final Cut Pro 10.5.1 inserts the following tags to H.264 and H.265. I tested this with macOS 11.2.1 Big Sur QuickTime Player and Photos.app 6.0:ġ. Keys seems to be the most robust place to write them. It seems that currently there are several places to write Title, Description, Author and Keywords in H.264.

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