[Bug 757961] New: Combination of jpegenc setting and presence of flacparse leads tounplayable files when muxed into matroska

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=757961

            Bug ID: 757961
           Summary: Combination of jpegenc setting and presence of
                    flacparse leads tounplayable files when muxed into
                    matroska
    Classification: Platform
           Product: GStreamer
           Version: unspecified
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: tsaunier at gnome.org
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Test cases:

 $ wget --user="pitivisamples at ecchi.ca" --password="pitivisamples"
ftp://ecchi.ca/00159.MTS

 $ gst-launch-1.0 uridecodebin uri=file:///$PWD/00159.MTS name=d ! \
   queue ! videoconvert ! videoscale ! videoconvert ! videorate ! \
   jpegenc quality=100 ! matroskamux name=m ! queue ! filesink \
   location=/tmp/test.bad.mkv d. ! queue ! audioconvert ! \
   flacenc ! flacparse ! m.

now:

 $ gst-launch-1.0 playbin uri=file:///tmp/test.bad.mkv

-> Fails to preroll

 $ gst-launch-1.0 uridecodebin uri=file:///$PWD/00159.MTS name=d ! \
   queue ! videoconvert ! videoscale ! videoconvert ! videorate ! \
   jpegenc quality=100 ! matroskamux name=m ! queue ! filesink \
   location=/tmp/test.good.no.flacparse.mkv d. ! queue ! audioconvert ! \
   flacenc ! m.

then:

 $ gst-launch-1.0 playbin uri=file:///tmp/test.good.no.flacparse.mkv

Works

and:

 $ gst-launch-1.0 uridecodebin uri=file:///$PWD/00159.MTS name=d ! \
   queue ! videoconvert ! videoscale ! videoconvert ! videorate ! \
   jpegenc quality=85 ! matroskamux name=m ! queue ! filesink \
   location=/tmp/test.good.quality85.mkv d. ! queue ! audioconvert ! \
   flacenc ! flacparse ! m.

Then:

  $ gst-launch-1.0 playbin uri=file:///tmp/test.good.quality85.mkv

works.

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