[Bug 787431] New: gst critical for gstaudioringbuffer.c

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=787431

            Bug ID: 787431
           Summary: gst critical for gstaudioringbuffer.c
    Classification: Platform
           Product: GStreamer
           Version: 1.8.3
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: don't know
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: henning.hinze at mail.de
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

hi.

i'm facing a gst critical: i'm trying one and the same pipeline on two
different pcs. they both run the same ubuntu linux 4.4.0-93-generic #116-Ubuntu
SMP Fri Aug 11 21:17:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

i'm executing this pipeline:

gst-launch-1.0 filesrc location="myfile.mp4" ! decodebin name=mux ! fakesink
mux. ! audioconvert ! alsasink

on one system it runs fine. on the other one it causes this message:

CRITICAL **: file gstaudioringbuffer.c: line 1971
(gst_audio_ring_buffer_set_channel_positions): should not be reached

do you have any information what might cause this message and how i could avoid
or detect it? if you need further information please let me know.

the file causing this critical message is attached.

best,
henning

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