* Top Rock Photography <ka...@toprockphotography.com> [02-04-21 16:16]: > On trying to get metadata into my AVIF files, I discovered a few things…. > > The AVIF files which darktable version 3.4.0 (compiled from source on > Ubuntu 20.04 LTS) produces do have EXIF metadata. They do not appear to > have IPTC —I may be wrong on that— nor XMP metadata. (Indeed, the WebP > files which darktable produces also seem to lack IPTC/XMP metadata, > although they do have EXIF metadata). > > Exiv2 vesion 0.27.3 cannot read nor write metadata to nor from an AVIF file > —which makes me wonder how the metadata got into the AVIF files which > darktable writes. > > Exiftool version 11.86, (library version 11.88, WTDickens?!?), does read, > write, and copy metadata in/out of AVIF files, including, apparently, IPTC, > and XMP metadata, (although I did not actually check on IPTC data yet, it > does copy XMP data for certain). I mention this because I had previously > suggested that ExifTool does not r/w/c metadata to/from AVIF files. > > So, thank you, darktable developers, for giving me my EXIF data in my AVIF > (and, of course, WebP) files. Now if I can only find a viewer —other than > Chrome, Chromium, & Firefox— which can view an AVIF, and also, which can > display its metadata. ;-) > > Sincerely, > > Karim Hosein > Top Rock Photography > 754.999.1652 > > > > On Fri, 29 Jan 2021 at 14:10, Top Rock Photography < > ka...@toprockphotography.com> wrote: > > > My only concern is that, although AVIF is not patent encumbered, he > > refused to add the reading/writing of metadata data to AVIF, until he > > speaks to a lawyer. That has been quite a long time ago and so, my AVIF > > files made by darktable seem to have no metadata. > > > > … > > > > > Currently, Exiftool is no better (in that regard). Worse yet, aside from > > the most popular browsers, (Firefox, Chrome/Chromium), I cannot find a > > viewer for AVIF files. > > > > I have other issues on AVIF support, but this is not the thread for that. > > > > Sincerely, > > > > Karim Hosein > > Top Rock Photography > > 754.999.1652 > > > > > > > > > >> > >> a: How will this affect DT? > >> b: Supplementary question: Would exiftool be an alternative for DT? > >> > >> >
gwenview displays avif files but not exif data. -- (paka)Patrick Shanahan Plainfield, Indiana, USA @ptilopteri http://en.opensuse.org openSUSE Community Member facebook/ptilopteri Photos: http://wahoo.no-ip.org/piwigo paka @ IRCnet freenode ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org
