[Bug 647919] New: qtmux: silently corrupts h264 streams with legacy caps

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=647919
  GStreamer | gst-plugins-good | git

           Summary: qtmux: silently corrupts h264 streams with legacy caps
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: ds at schleef.org
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


qtmux silently (well, GST_WARNING) fails if the caps are
"video/x-h264,stream-format=avc".  That is, if they are missing the
alignment=au field.

Aside from the fact that avc implies alignment=au, if qtmux wants to force
alignment=au, it should have it in the caps template.  If it wants to trick
upstream elements into negotiating without alignment=au, in order to discover
potential bugs, it should cause an element error.

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