[Bug 746781] Audio track that does not play correctly

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=746781

--- Comment #8 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> ---
I do not get any corruption/missing sound when I try to reproduce the playbin
pipeline manually:

gst-launch-1.0 filesrc location=/home/v/Downloads/air-anaconda1080-sample.mkv !
typefind !  matroskademux name=d ! multiqueue max-size-time=0
max-size-bytes=2097152 name=mq   mq. ! h264parse ! 'video/x-h264' ! avdec_h264
! input-selector ! queue ! fakesink    mq. ! ac3parse ! 'audio/x-ac3' ! a52dec
name=A  mq. ! ac3parse ! 'audio/x-ac3' ! a52dec ! input-selector name=S  S. !
tee ! streamsynchronizer ! queue ! identity ! audioconvert ! audioresample !
pulsesink d. ! mq. d. ! mq. A. ! S.

This sounds fine. It corresponds to:

gst-launch-1.0 playbin uri=file:///home/v/Downloads/air-anaconda1080-sample.mkv
video-sink='fakesink sync=1' flags=2

which does get corrupted.

So it's pointing to playbin or decodebin, oddly. Or maybe some timing race that
happens to be exposed by using playbin...

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