[Bug 696037] New: [h264parse] Access unit delimiters are missing

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Mon Mar 18 02:30:19 PDT 2013


https://bugzilla.gnome.org/show_bug.cgi?id=696037
  GStreamer | gst-plugins-bad | 1.0.5

           Summary: [h264parse] Access unit delimiters are missing
    Classification: Platform
           Product: GStreamer
           Version: 1.0.5
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: anton at angri.ru
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Created an attachment (id=239104)
 View: https://bugzilla.gnome.org/attachment.cgi?id=239104
 Review: https://bugzilla.gnome.org/review?bug=696037&attachment=239104

Proposed fix

Packing of h264 to mpeg transport stream requires access unit delimiters to
precede every GOP and SPS/PPS. In all other applications of h264 au delimiters
may or may not present.

Pushing au delimiters from h264parse element allows the output of
some_h264_source ! h264parse ! mpegtsmux pipeline be playable by e.g. an
iphone. It seems to be harmless enough to be enabled unconditionally.

Please see also https://bugzilla.gnome.org/show_bug.cgi?id=608786 for
reference.

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