[digiKam-users] Migrating from Windows, can Digikam read embedded video tags?

Mon Jan 31 04:26:58 GMT 2022

Hi,

About Exiftool support in digiKam for and write metadata, please read all
pending entries in bugzilla (and comment in place if necessary instead the
mailing list) :

https://bugs.kde.org/buglist.cgi?bug_status=UNCONFIRMED&bug_status=CONFIRMED&bug_status=ASSIGNED&bug_status=REOPENED&component=Metadata-ExifTool&product=digikam&query_format=advanced

Best

Gilles Caulier

Le lun. 31 janv. 2022 à 02:37, Will Rose <will.rose at outlook.com> a écrit :

> Perhaps this is not the right place to ask since it's only partially
> related to DigiKam, but let's say I wanted to manually use ExifTool to
> write the HEIC XMP sidecar data back into the file itself, and then delete
> the sidecar. Is that safe to do? I can't imagine this would confuse DigiKam
> down the road?
>
> Specifically, I'm looking at the examples on the ExifTool website and
> there are a couple commands that look promising.
>
> https://www.exiftool.org/metafiles.html
>
> 9. Restore all XMP tags from an XMP sidecar file to XMP in a JPG image:
> exiftool -tagsfromfile SRC.xmp -all:all DST.jpg
>
> 15. Copy XMP from sidecar files back to the same locations in the source
> files:
> exiftool -ext EXT -tagsfromfile %d%f.xmp -all:all -r DIR
>
> I've tried them out successfully in a test folder outside DigiKam, but not
> inside my main library yet. I'm curious to know whether it will play well
> with DigiKam. Or maybe I'll just wait for DigiKam to have this built in.
>
> Thanks!
>
>
>
> ------------------------------
> *From:* Digikam-users <digikam-users-bounces at kde.org> on behalf of Gilles
> Caulier <caulier.gilles at gmail.com>
> *Sent:* January 16, 2022 1:29 AM
> *To:* digiKam - Home Manage your photographs as a professional with the
> power of open source <digikam-users at kde.org>
> *Subject:* Re: [digiKam-users] Migrating from Windows, can Digikam read
> embedded video tags?
>
> yes.
>
> digiKam has a maintenance tool to sync file metadata with digiKam
> database. As all tags are always written to the database outside the fact
> to manage or not XMP sidecar (optional), you will be able later to update
> HEIF metadata with digiKam tags.
>
> Best
>
> Gilles Caulier
>
> Le dim. 16 janv. 2022 à 06:26, Will Rose <will.rose at outlook.com> a écrit :
>
> That's good to know, thanks.
>
> If I go through now and tag a bunch of new HEIC files in digiKam, and that
> metadata gets written to a sidecar, will there be an easy way to copy the
> sidecar data back into the image once the HEIC write feature becomes
> available? If not, I'm just wondering if I should hold off on creating new
> tags if I'm just going to have to do it again later.
>
> Thanks for all your help!
> ------------------------------
> *From:* Digikam-users <digikam-users-bounces at kde.org> on behalf of Gilles
> Caulier <caulier.gilles at gmail.com>
> *Sent:* January 16, 2022 1:15 AM
> *To:* digiKam - Home Manage your photographs as a professional with the
> power of open source <digikam-users at kde.org>
> *Subject:* Re: [digiKam-users] Migrating from Windows, can Digikam read
> embedded video tags?
>
> Hi,
>
> For the moment, HEIC still in read only about metadata. We plan to use
> ExifTool to deal with this format. It's not yet implemented.
>
> You can use XMP sidecar with digiKam instead.
>
> Gilles Caulier
>
> Le dim. 16 janv. 2022 à 05:43, Will Rose <will.rose at outlook.com> a écrit :
>
> Hi Gilles,
>
> Unfortunately, based on what I am seeing from ExifTool, Microsoft is not
> writing to the file metadata for those HEIC face tags. I might have to go
> back and re-tag those files.
>
> However, if I do add tags or face regions to an HEIC file in Digikam, at
> the moment it is writing to an external XMP file instead of embedding the
> metadata like it would for a JPG. Is it possible to force Digikam to embed
> the data in the HEIC? I know the newer versions of ExifTool can write to
> HEIC.
>
> Thanks!
> ------------------------------
> *From:* Digikam-users <digikam-users-bounces at kde.org> on behalf of Gilles
> Caulier <caulier.gilles at gmail.com>
> *Sent:* January 16, 2022 12:09 AM
> *To:* digiKam - Home Manage your photographs as a professional with the
> power of open source <digikam-users at kde.org>
> *Subject:* Re: [digiKam-users] Migrating from Windows, can Digikam read
> embedded video tags?
>
> hi,
>
> the Q is : where is stored this information set by the Microsoft
> application?
>
> - in a database = we cannot extract it
> - in XMP sidecar = we must be able to extract it
> - in file metadata = we  must be able to extract it
>
> About HEIF : yes we support this format, including metadata.
>
> To be sure, share samples to be sure and test.
>
> Best
>
> Gilles Caulier
>
>
> Le dim. 16 janv. 2022 à 02:12, Will Rose <will.rose at outlook.com> a écrit :
>
> I just realized as well that Digikam won't read any face tags added by
> Windows to any of my wife's many iPhone images which are now in HEIC
> format. I don't suppose Digikam is able to read/write embedded tags for
> this popular format?
>
> ------------------------------
> *From:* Digikam-users <digikam-users-bounces at kde.org> on behalf of Will
> Rose <will.rose at outlook.com>
> *Sent:* January 15, 2022 7:11 PM
> *To:* digiKam - Home Manage your photographs as a professional with the
> power of open source <digikam-users at kde.org>
> *Subject:* Re: [digiKam-users] Migrating from Windows, can Digikam read
> embedded video tags?
>
> I'm not sure I understand. I'll re-explain my situation and try to clarify
> my problem.
>
> Since about 2006 I've used Windows Photo Gallery to organize and tag my
> photos and videos. I'm trying to move away from it since it's long
> deprecated software and Digikam is where I want to go (right now using
> 7.4.0 on Windows 10).
>
> Problem is, I have lots of old videos that have been tagged from inside
> Windows Photo Gallery (WMV, MPG, MOV, MP4). Let's say I tagged a bunch of
> videos as "travel". If I want to search for those videos in Windows Photo
> Gallery I can just search that term and it will find everything with that
> tag. I can also find them from Windows Explorer since from what I can tell
> the tags are embedded in the video file, except for maybe the few MPGs I
> have. However, if I open up Digikam and search for "travel" none of those
> videos show up. Ideally I would be able to read those old tags from inside
> Digikam because at some point I'll get rid of the old Windows Photo Gallery
> software. I could instead just search in Windows Explorer, but I just
> realized that it won't find my Digikam-tagged video files because it's not
> searching the contents of the XMP sidecar file. So at the moment there is
> not one place I can search from and get all the tag results I want.
>
>
> ------------------------------
> *From:* Digikam-users <digikam-users-bounces at kde.org> on behalf of Gilles
> Caulier <caulier.gilles at gmail.com>
> *Sent:* January 15, 2022 5:50 PM
> *To:* digiKam - Home Manage your photographs as a professional with the
> power of open source <digikam-users at kde.org>
> *Subject:* Re: [digiKam-users] Migrating from Windows, can Digikam read
> embedded video tags?
>
> Hi,
>
> Yes, the video tags will be readable under Windows. In background it's
> ffmpeg C API used to parse video file metadata.
>
> In the future, we will use exifTool instead. It will be more powerful.
>
> Best
>
> Gilles Caulier
>
> Le sam. 15 janv. 2022 à 22:23, Will Rose <will.rose at outlook.com> a écrit :
>
> I've been a long time user of Windows Live Photo Gallery and Windows Photo
> Gallery because it was the easiest program to use to embed tags inside
> image and video files.
>
> I followed the Digikam Windows compatibility guide and though it works
> great for photos, I don't see much for videos. I have a lot of old WMV,
> MPG, and MOV files that have been tagged using Photo Gallery. The tags show
> up in the interface as "Descriptive Tags", and also show up in Windows
> Explorer as "Tags" if I check the file properties, but nothing shows up in
> Digikam. If I try to add tags to those files with Digikam, they write to
> external XMP files. Is there a way to get Digikam to write or at least read
> those Windows-embedded video tags? If I can at least get it to read, I can
> search for those old tags with Digikam if I'm looking for something
> specific that I've tagged in the past 15 years. Going forward, writing is
> less important, though ideally I would also like to write to these files.
>
> Thanks.
>
>
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