[Bug 752821] New: h264parse: broken/invalid nal, but avdec_h264 show video correctly

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=752821

            Bug ID: 752821
           Summary: h264parse: broken/invalid nal, but avdec_h264 show
                    video correctly
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: major
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: lists at svrinformatica.it
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Created attachment 308072
  --> https://bugzilla.gnome.org/attachment.cgi?id=308072&action=edit
test file

Please try the following pipeline with tha attached file:

gst-launch-1.0 filesrc location=/tmp/test.gdp ! gdpdepay ! avdec_h264 !
xvimagesink

you'll see the video as expected,

now try this one:

gst-launch-1.0 filesrc location=/tmp/test.gdp ! gdpdepay ! h264parse !
avdec_h264 ! xvimagesink

h264parse will drop every buffer with this error:

h264parse gsth264parse.c:1197:gst_h264_parse_handle_frame:<h264parse0>
broken/invalid nal Type: 1 Slice, Size: 6529 will be dropped

h264parser seems wrong since avdec can handle the same h264 frames. 

h264parse is needed for example if you want to mux the frames in a file

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