[Bug 734051] New: playbin/subtitleoverlay: Race switching audio track leads to not-negotiated errors

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=734051
  GStreamer | gst-plugins-base | git

           Summary: playbin/subtitleoverlay: Race switching audio track
                    leads to  not-negotiated errors
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: tsaunier at gnome.org
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


The following test gst-validate test races
https://jenkins.arracacha.collabora.co.uk/view/pitivi/job/gst-validate-tests/800/testReport/junit/validate.file.playback/switch_subtitle_track/Sintel_2010_720p_mkv/history/

This test actually runs

$gst-validate-1.0  --set-scenario switch_subtitle_track playbin
uri=file:///path/to/Sintel.2010.720p.mkv audio-sink='fakesink'
video-sink='fakesink'

file comming from: https://archive.org/details/sintel.2010.720p.mkv

Basically the switch_subtitle_track scenario just plays for 1 second, then
switches the subtitle track to the second subtitle track, at that point we can
get a NOT NEGOTIATED error.

You can see a bit more details here:
https://jenkins.arracacha.collabora.co.uk/view/pitivi/job/gst-validate-tests/800/testReport/validate.file.playback/switch_subtitle_track/Sintel_2010_720p_mkv/

That test will be disabled from now on.

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