https://bugs.kde.org/show_bug.cgi?id=386664
Henrik Fehlauer <rk...@lab12.net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Wrong video orientation |Allow to manually rotate
| |video thumbnails and videos
| |during playback
Status|UNCONFIRMED |CONFIRMED
Ever confirmed|0 |1
--- Comment #6 from Henrik Fehlauer <rk...@lab12.net> ---
Looking at bug 361829, digiKam claims to use GStreamer (first via
Qt5Multimedia, later via QtAV). And indeed, in digiKam the video is played with
an incorrect orientation. Same thing with the "Parole" media player. Also
finally got my Phonon GStreamer backend to play the video, I can confirm the
problem. This means this is a problem in GStreamer.
There is another issue: The orientation of the thumbnail is wrong, too.
According to bug 361829, thumbnail generation for videos is delegated to "KDE5
imageio plugins". This can also be seen in Gwenview and Dolphin, where
independent of the selected Phonon backend the video orientation is wrong.
In summary:
- As a workaround, switch to the Phonon VLC backend.
- Gwenview should allow the user to override the video orientation. This is
useful even for cases where the orientation is read correctly, and the UI is
already there for rotating images. Let's track this here.
- GStreamer should be fixed to show the correct video orientation. Upstream
bug: https://bugzilla.gnome.org/show_bug.cgi?id=765309
- KDE's thumbnailing infrastructure should respect the video orientation tag.
This is tracked in bug 329854, but in case digiKam decides to not use imageio
plugins anymore this would need a separate bug.
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