https://bugs.kde.org/show_bug.cgi?id=443556

            Bug ID: 443556
           Summary: Audio control in video playback with strange behaviour
           Product: kphotoalbum
           Version: GIT master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: Viewer
          Assignee: kpab...@willden.org
          Reporter: schleth...@web.de
  Target Milestone: ---

SUMMARY

The audio level control still has some strange behaviour (is this work in
progress?):

a) The % shown usually does not change with the slider position. 
I have seen it standing at 0% or 100% or 648% (I am not making this up!),
independently of the slider position.

b) After mute, the audio stays mute after un-muting. I have to touch the slider
a bit to turn the sound back on.

At the moment I use the phonon backend with v5.8.1-21-g7f709159 and phonon
itself set to vlc-backend via phononsettings.

STEPS TO REPRODUCE & OBSERVED RESULT

for a) I have not yet found a causality for the different numbers displayed,
only that the percentage never changes when pulling the slider.

for b):
1. play video
2. set audio level to some value (maybe full)
3. mute via the button
4. unmute via the button
5. nothing to be heard
6. shift the audio level slider a bit
7. sound comes back.

EXPECTED RESULT
in a)
percentage should reflect slider position and show values between 0 and 100%

in b)
5. should be 7. 

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: openSuse Leap 15.3
KDE Plasma Version: 5.18.6 (?)
KDE Frameworks 5.76.0
Qt 5.12.7 (kompiliert gegen 5.12.7)
KPA: v5.8.1-21-g7f709159

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