Added flush mode to video player to fix black screen on media loop

[steawth]

I was finally able to track down the cause of the black screen appearing on video loop. The solution was found in the comments on the QTBUG-49446 discussion page.
Build tested on linux using the latest master branch.

[Bionus]

I see the change is made only for the Android version, was this bug Android specific?

[codecov]

Codecov Report

Merging #3015 (f01234c) into master (0f774c4) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3015   +/-   ##
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  Coverage   34.12%   34.12%           
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  Files         346      346           
  Lines       22655    22655           
  Branches      480      480           
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  Hits         7730     7730           
  Misses      14808    14808           
  Partials      117      117           

[steawth]

After a rebuild I see that this change did not fix what I thought it had on linux. I will continue looking for a solution to the video going black in the image window for a few ms on loop of the video (problem seems similar to QTBUG-34706 ). This change might help with the issue on android but I do not know how to build grabber for this platform. Feel free to close the pull request if you find that this is not the case.

[Bionus]

If your issue was on Linux, then yes this won't work since the QML files are only used on the mobile version. The desktop player is managed in video-player.cpp.

However, I recently upgraded Qt from 5.15 to 6.5, maybe that could have fixed the issue by itself? (there has been big changes to the multimedia back-ends) Maybe you could try on the nightly version?

[steawth]

After a quick run of the nightly version on Windows this seems to be the case. I'll go ahead and close this pull request.