[Bug 693620] New: Delays in 'about-to-finish' signal of playbin2 corrupts video playback

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=693620
  GStreamer | gst-plugins-base | 0.10.36

           Summary: Delays in 'about-to-finish' signal of playbin2
                    corrupts video playback
    Classification: Platform
           Product: GStreamer
           Version: 0.10.36
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: kirgene at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=235744)
 --> (https://bugzilla.gnome.org/attachment.cgi?id=235744)
Plays video in gapless mode

I'm using attached python program to play video in gapless mode.
Duration of video is 10 seconds.

Inside 'about-to-finish' I'm using 'sleep' to simulate heavy calculations for
getting next video to play.

And here what happens:
When video is playing second time (when I set next video uri in
'about-to-finish') only the end of video is playing.

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