[digikam] [Bug 374771] New: Thumbnails for video files are gray

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https://bugs.kde.org/show_bug.cgi?id=374771

            Bug ID: 374771
           Summary: Thumbnails for video files are gray
           Product: digikam
           Version: 5.3.0
          Platform: Kubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Thumbnails
          Assignee: [hidden email]
          Reporter: [hidden email]
  Target Milestone: ---

Created attachment 103291
  --> https://bugs.kde.org/attachment.cgi?id=103291&action=edit
bad video thumbnails

DK 4.x worked fine in this area. Now on kubuntu 16.04 and DK 5.3 I have buggy
thumbnails of video files. The picture attached explains it best. The video is
from camera, mts format.

Dolphin, gwenview makes nice thumbanails.
P.

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Simon <[hidden email]> changed:

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |NEEDSINFO
         Resolution|---                         |WAITINGFORINFO
                 CC|                            |[hidden email]

--- Comment #1 from Simon <[hidden email]> ---
Please try either the prerelease appimage
(https://drive.google.com/drive/folders/0BzeiVr-byqt5Y0tIRWVWelRJenM) or wait
till the release which will happen later today or tomorrow
(http://download.kde.org/stable/digikam/). Digikam dropped QTMultimedia and
instead uses QtAV for video support. This will probably fix your problem.
Please write back if this is the case.

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--- Comment #2 from [hidden email] ---
I will wait for the 5.4 and report back. Thanx.

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[hidden email] changed:

           What    |Removed                     |Added
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         Resolution|WAITINGFORINFO              |---
                 CC|                            |[hidden email]
     Ever confirmed|0                           |1
             Status|NEEDSINFO                   |CONFIRMED

--- Comment #3 from [hidden email] ---
Simon,

I confirm the dysfunction with 5.4.0 AppImage.

It's strange all work fine with video thumbnails until few days. Somebody has
changed something about ?

digikam.dimg: "/mnt/data2/photos/GILLES/NEW/FUJI-X10/DSCF1010.MOV"  : QIMAGE
file identified
digikam.metaengine: Loading image history  ""
digikam.dimg.qimage: Can not load "
"/mnt/data2/photos/GILLES/NEW/FUJI-X10/DSCF1010.MOV" " using
DImg::QImageLoader!
digikam.general: Cannot extract preview for
"/mnt/data2/photos/GILLES/NEW/FUJI-X10/DSCF1010.MOV"
digikam.general: Cannot extract preview for
"/mnt/data2/photos/GILLES/NEW/FUJI-X10/DSCF1010.MOV"

Just press F5 in an album with video. Note that to preview video or to slide
video work perfectly. So it's not a codec or QtAV problem.

Can you confirm the dysfunction ?

Gilles Caulier

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Maik Qualmann <[hidden email]> changed:

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--- Comment #4 from Maik Qualmann <[hidden email]> ---
Everything fine here with my compiled version. Thumbnails are created, no
problem. Nothing has changed in the past few days. I do not see a call to the
video thumbnailer in your log.

Maik

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--- Comment #5 from [hidden email] ---
Yes, Maik seen too this behavior...

The log come from the last build AppImage that i push to KDE server as offcial
release. It will be published today i think.

It run on my older Mageia5 where digiKAm 4 was been installed. Perhaps there is
a conflict somewhere in settings. I will take a look this evening more in
details.

Gilles

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           What    |Removed                     |Added
----------------------------------------------------------------------------
   Version Fixed In|                            |5.5.0
             Status|CONFIRMED                   |RESOLVED
         Resolution|---                         |FIXED

--- Comment #6 from [hidden email] ---
Ok, wrong alert. The typemime in my configuration from DK4 was corrupted or
something like that.

To reset digiKam settings fix the problem. There is really a problem to
backport DK4 to DK5 configuration. And i don't know why exactly. I suspect a
problem in KXMLGUI API...

The video thumbnails are fine with DK5.4.0 AppImage

Pioter, I close this file now. Don't hesistate to re-open if necessary.

Gilles Caulier

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         Resolution|FIXED                       |---
             Status|RESOLVED                    |REOPENED

--- Comment #7 from [hidden email] ---
Well, I'm reopening because the problem with video thumbs is still there.
I'v just upgraded to 5.4.

Now when I recreate the thumbnails (pressing F5)  the thumbs for video are gone
(from gray boxes to no image). DK shows only empty box. So now there is no sign
that this thumb is for video. Well, it is empty so I gues it is ;-)
P.

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--- Comment #8 from Maik Qualmann <[hidden email]> ---
Please post the Help->Components Information.

Maik

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--- Comment #9 from [hidden email] ---
digikam version 5.4.0
CPU cores: 4
Eigen: 3.2.92
Exiv2: 0.25
Exiv2 can write to Jp2: Tak
Exiv2 can write to Jpeg: Tak
Exiv2 can write to Pgf: Tak
Exiv2 can write to Png: Tak
Exiv2 can write to Tiff: Tak
Exiv2 supports XMP metadata: Tak
KF5: 5.18.0
LensFun: 0.3.2-0
LibCImg: 130
LibJPEG: 80
LibJasper: 1.900.1
LibLCMS: 2060
LibLqr support: Yes
LibPGF: 7.15.32
LibPNG: 1.2.54
LibRaw: 0.18.0
LibTIFF: 4.0.6
Marble: 0.22.20
Parallelized demosaicing: Tak
Qt: 5.5.1
AkonadiContact support: Tak
Calendar support: tak
DBus support: Tak
LibGphoto2: 2.5.9
LibKipi: 5.2.0
LibOpenCV: 2.4.9.1
LibQtAV: 1.11.0
Media player support: Tak
Obsługa Baloo: Tak
Panorama support: tak
Silnik bazy danych: QSQLITE
Wtyczki Kipi: 5.4.0

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--- Comment #10 from Maik Qualmann <[hidden email]> ---
Can you playing the videos in digiKam? Please try the AppImage for testing:
http://download.kde.org/stable/digikam

Maik

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--- Comment #11 from [hidden email] ---
Playing video works fine on DK from Phills ppa. Click on the empty thumbnail
and it plays nicely.

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--- Comment #12 from Maik Qualmann <[hidden email]> ---
Can you start digiKam from the console and press F5 in an album with maybe only
2 videos and post the output of the console?

Maik

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           What    |Removed                     |Added
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             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #13 from [hidden email] ---
I  have tried to reproduce the error, but when copied some video files to
isolate them from huge folder they generally have properly regenerated thumbs.
Today I have uploaded new video files and they have good thumbs. So let say the
problem has gone in DK 5.4.

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           What    |Removed                     |Added
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          Component|Thumbs-Image                |Thumbs-Video

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