[Phonon] [Bug 430198] New: Cannot play mov files through phonon

Joan bugzilla_noreply at kde.org
Wed Dec 9 23:07:52 GMT 2020


https://bugs.kde.org/show_bug.cgi?id=430198

            Bug ID: 430198
           Summary: Cannot play mov files through phonon
           Product: Phonon
           Version: 4.11.1
          Platform: Neon Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: aseques at gmail.com
                CC: myriam at kde.org, romain.perier at gmail.com,
                    sitter at kde.org
  Target Milestone: ---

Created attachment 133959
  --> https://bugs.kde.org/attachment.cgi?id=133959&action=edit
Media information

SUMMARY

I have a vide in mov format recorded from a Canon DSLR (EOS 550D), that can't
be played with phonon (neither gstreamer nor vlc), in both cases when playing
the file (with either dragon or gwenview) I only get a black screen with no
sound. On the console there are several of these messages:

  WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin
could not be loaded
  WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin
could not be loaded
  WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin
could not be loaded
  WARNING: Phonon::createPath: Cannot connect  Phonon::MediaObject ( no
objectName ) to  Phonon::VideoWidget ( no objectName ).


STEPS TO REPRODUCE
1. Remove phonon-backend-gstreamer
2. Try to play mov file in any program using phonon
3. Black screen with no sound
4. Install again  phonon-backend-gstreamer and remove phonon-backend-vlc
5. Try to play mov file in any program using phonon
6. Black screen with no sound

The same file can be played both without problemes with:
- gst-launch-1.0  filesrc location=MVI_6781.mov ! queue ! decodebin !
autovideosink
- vlc MVI_6781.mov

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: 
KDE Frameworks Version: Frameworks 5.76.0 
Qt Version: Qt 5.15.1 
Plasma Neon

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