[Bug 795551] New: Sporadic stall during seeking on Gstreamer 1.10.4 and higher

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=795551

            Bug ID: 795551
           Summary: Sporadic stall during seeking on Gstreamer 1.10.4 and
                    higher
    Classification: Platform
           Product: GStreamer
           Version: 1.10.x
                OS: Linux
            Status: NEW
          Severity: major
          Priority: Normal
         Component: gst-plugins-base
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: dsi.maillist at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Hello Gstreamer developers,

I would like to report a sporadic stall in gstreamer 1.10.4 (Debian 9) or
higher versions while reading video files. I have created a standalone
script, the file and the video file can be found in the following location:

https://drive.google.com/open?id=14imemqvC5bP7xhDsFPbUkHG9SWmSK4Fz

https://drive.google.com/open?id=15xZ1wcuQBN7pPxU7Ru08hSR7YagUQV6w

The GDB stack trace from my machine can be found here:

https://drive.google.com/open?id=1M8Srjd1Qp4Y8C8Edepme2lwzzWSpOZM3


The stall seems to be appearing in gst_element_seek_simple ().

Here is what I am trying to do in my application:

   1. Create the playbin.
   2. Set the playbin to PLAYING.
   3. Seek and read the first frame.
   4. Seek and read the 41st frame and read 4 more samples (file has a
   total of 45 frames).
   5. Seek back to 1st frame. That is where the STALL happens.



I have put the number of iterations to be 5000 but usually the stall
appears in around 200-300 iterations.

This is a work stoppage issue for us as the stalls are far more frequent in our
application.

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