[Bug 793782] New: [gstreamer-msdk-master][SKL] some cases mpeg2 decoding fail with error message "mpegvparse0: Internal data stream error"

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=793782

            Bug ID: 793782
           Summary: [gstreamer-msdk-master][SKL] some cases mpeg2 decoding
                    fail with error message "mpegvparse0: Internal data
                    stream error"
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: zhanjunx.wang at intel.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Test Env:
============================================
Platform:               SKL
Arch:                  x86_64
CentOS Linux release    7.3.1611 (Core)
Kernel:            4.4.0 
libva            MediaServerStudioEssentials2017R3.tar.gz (libva 
                        1.67.0.pre1)
media_driver        MediaServerStudioEssentials2017R3.tar.gz 16.5.2.64009-
                        ubit
gstreamer               master branch 91798e16cc09420163684d13779f13f374164ea2
gst-bad         master branch 1c81bf4bdc67b518d6b3bbc22398c17fe8ced1da


Reproduce Steps:
============================================
take one case for example
1. build enc as above lists
2. gst-launch-1.0 -q filesrc
location=/media/yami_mpeg2/tcela-10-killer.bits.mpeg2 '!' mpegvideoparse '!'
msdkmpeg2dec '!' videoconvert '!' video/x-raw,format=I420 '!' checksumsink2
frame-checksum=FALSE file-checksum=TRUE plane-checksum=FALSE
3. decoding fails and error message occurs.

error info
(gst-launch-1.0:9334): GStreamer-CRITICAL **: gst_buffer_unmap: assertion
'GST_IS_BUFFER (buffer)' failed
ERROR: from element /GstPipeline:pipeline0/GstMpegvParse:mpegvparse0: Internal
data stream error.
Additional debug info:
gstbaseparse.c(3611): gst_base_parse_loop ():
/GstPipeline:pipeline0/GstMpegvParse:mpegvparse0:
streaming stopped, reason error (-5)

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