[Bug 711829] New: matroskademux: assert on division by zero

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=711829
  GStreamer | gst-plugins-good | git

           Summary: matroskademux: assert on division by zero
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: davidsf at axis.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=259544)
 View: https://bugzilla.gnome.org/attachment.cgi?id=259544
 Review: https://bugzilla.gnome.org/review?bug=711829&attachment=259544

Avoid division by zero assert in gst_matroska_demux_search_pos

When doing a seek to position 0 when already positioned on 0 in a mkv with no
index (still being recorded), there is an assert in _gst_util_uint64_scale for
denom being 0.

This is caused by a call from gst_matroska_demux_search_pos where otime –
demux->stream_start_time == 0.

I have attached the patch that we are using as workaround.

This condition occurs very often but not always. Sometimes it looks like the
position has moved from 0 and the problem does not happen even though the
pipeline was paused directly.

-- 
Configure bugmail: https://bugzilla.gnome.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the QA contact for the bug.
You are the assignee for the bug.